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70-413 exam Dumps Source : Designing and Implementing a Server Infrastructure

Test Code : 70-413
Test denomination : Designing and Implementing a Server Infrastructure
Vendor denomination : Microsoft
: 263 existent Questions

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Microsoft Microsoft Designing and Implementing

Microsoft (70-475): Designing and implementing great facts Analytics solutions | killexams.com existent Questions and Pass4sure dumps

MeasureUp’s 70-475: Designing and enforcing huge information Analytics options rehearse study at various is designed to aid candidates prepare for and stream the Microsoft 70-475 examination.

The Microsoft 70-475 examination is meant for statistics gurus who've smack designing massive records analytics solutions on Microsoft Azure. Candidates should breathe capable of design massive facts batch processing and interactive solutions in addition to gigantic statistics real-time processing options. Candidates should even breathe in a position to design desktop-gaining erudition of solutions and create and control end-to-conclusion cloud analytics options.

Certification: This exam counts as credit score towards here certifications:expert


industry acknowledges requisite for talent in Administering, Designing and implementing SQL Server-primarily based Databases | killexams.com existent Questions and Pass4sure dumps

LAS VEGAS, Nov. 16, 1998 — today at COMDEX/Fall ’98, Microsoft Corp. announced its premier certification for database directors (DBAs), Microsoft® certified Database Administrator (MCDBA), to augment the present Microsoft certified professional software. creation of the brand novel certification changed into fueled via the growing industry claim for knowledgeable DBAs mixed with the supply of SQL Server ™ 7.0.

The MCDBA became designed for experts looking for superior capabilities in SQL Server and may edge organizations annoying a incredibly qualified DBA to manage a SQL Server-primarily based platform so one can evade line-of-enterprise applications, information warehousing, digital commerce and mobile computing purposes. specialists with the MCDBA certification will breathe capable of design and implement databases using Microsoft SQL Server 7.0, in addition to hearten their agencies occupy skills of the brand novel facets that SQL Server 7.0 presents.

A Microsoft survey carried out in July 1998 of Microsoft licensed reply suppliers, midsized corporations and commercial enterprise agencies confirmed that DBA changed into some of the 5 jobs most sought after, with more than 50,000 openings within the united states and Canada projected in the subsequent twelve months.

” Channel partners, IT specialists and employers informed us they saw a powerful claim for database options, with valued clientele deploying Microsoft SQL Server for everything from e-commerce and mobile computing to statistics warehousing and line-of-business solutions,” observed Donna Senko, director of the certification and erudition evaluation community at Microsoft. “In response, we’re offering a certification in an pains to qualify people to occupy expertise of the total latitude of aspects.”

presently, there are greater than 35,000 Microsoft certified authorities who Enjoy handed tests for SQL Server. This yr, Microsoft certified Technical training facilities (CTECs) will coach over 120,000 americans on database administration and structure worldwide, together with 50,000 people taking fragment in special training offers as fragment of a $20 million SQL Server 7.0 practicing funding by using Microsoft.

Certification necessities

The MCDBA certification is aimed toward these accountable for the rational and actual design, implementation, protection and administration of databases.

the novel certification requires candidates to slouch four core tests and one elective exam. Core checks comprehend these:

  • Administering Microsoft SQL Server 7.0 (accessible spring 1999)

  • Designing and imposing Databases With Microsoft SQL Server 7.0 (accessible spring 1999)

  • imposing and assisting Microsoft home windows NT Server four.0 (currently available)

  • implementing and helping Microsoft home windows NT Server 4.0 in the commercial enterprise (at present attainable)

  • Candidates can design a option from privilege here optionally available checks:

  • Internetworking with Microsoft TCP/IP on Microsoft home windows NT Server 4.0 (at present obtainable )

  • imposing and supporting Microsoft information superhighway suggestions features (at present attainable)

  • Designing and enforcing information Warehouses With Microsoft SQL Server 7.0 (coming quickly)

  • Designing and imposing allotted applications With Microsoft visible fundamental 6.0 (coming quickly)

  • Designing and implementing dispensed applications With Microsoft visual C++ 6.0 (coming soon)

  • “To win database issues resolved, you requisite somebody with a tradition in windows NT and SQL Server,” talked about Ann Harris, manager of web and developer capabilities at imaginitive options Inc., a Microsoft certified Technical education core and consultant community based mostly in Sacramento, Calif. “at the moment, organizations finish up hiring both an MCSE and a divide SQL Server DBA, however this incurs lots of overtime and work, now not to mention a lot more rate. If I might boom to individuals, ‘I’m going to present you one body with every bit of this competencies,’ that might breathe notable. I really believe this certification is needed.”

    advantages of the MCDBA certification comprehend commerce focus and talent with Microsoft products, direct entry to technical suggestions via a web web site, and invites to Microsoft conferences, technical working towards periods and special activities. additional advantages from Microsoft for these gaining this certification might breathe announced on the Microsoft licensed professional web site at http://www.microsoft.com/mcp/ later this 12 months.

    To set aside together for certification checks, candidates can elect from numerous training methods, including on-line, self-look at and instructor-led alternatives available through Microsoft CTECs. Certification checks are provided at Sylvan Prometric testing facilities and digital college businesses (VUE) trying out centers. To register for assessments, candidates can consult with http://www.microsoft.com/train_cert/mcp/certstep/examreg.htm .

    additionally announced these days, as fragment of Microsoft’s $20 million investment in working towards, is discounted practising for SQL Server 7.0, if you want to hearten candidates win a head birth in making ready

    for the SQL Server tests. This present comprises a $500 practicing voucher for a five-day path: system Administration for Microsoft SQL Server 7.0. any individual who completes the training with the aid of Jan. 31, 1999, will acquire a free voucher for the corresponding examination. individuals can gain details about the practising at http://www.microsoft.com/train_cert/sql7/present/.

    The Microsoft certified skilled application became headquartered in 1992. greater than 360,000 americans are currently licensed and dangle one or more MCP certifications.

    founded in 1975, Microsoft (Nasdaq “MSFT” ) is the worldwide chief in utility for personal computer systems. The company presents a wide array of items and services for company and private use, every designed with the mission of creating it less difficult and greater unique for americans to occupy competencies of the replete energy of personal computing every day.

    Microsoft, windows NT, visual fundamental and visible C++ are both registered trademarks or trademarks of Microsoft Corp. in the u.s. and/or other countries. other product and enterprise names herein may breathe emblems of their respective owners.

    For online counsel:

    http://www.microsoft.com/train_cert/

    be aware to editors: in case you are interested in viewing more information on Microsoft, please visit the Microsoft internet page at http://www.microsoft.com/presspass/ on Microsoft’s corporate recommendation pages.


    the artery to slouch top Microsoft Certifications MTA, MCSA and MCSE exams the consume of apply exams | killexams.com existent Questions and Pass4sure dumps

    we are every bit of well frequent with the identify of Microsoft as there's rarely a nook on this planet where the software produced by means of this company isn't used. although, Microsoft isn't handiest a software issuer; it also presents a gigantic certification program for IT specialists in every sole site the world.

    we're every bit of smartly established with the identify of Microsoft as there's hardly a corner in the world the site the application produced via this commerce is not used. besides the fact that children, Microsoft is not handiest a application issuer; it additionally offers a huge certification program for IT experts everywhere the realm.

    This textual content is committed to ordinary Microsoft certifications reminiscent of MTA, MCSA and MCSE that are time-honored within the IT world. they can present you a short description of the ultimate Microsoft credential alternatives and hint the connections between them. they are able to additionally occupy some certain certification as an specimen and evaluate the details of exam coaching.

    Now, let’s circulation to the sought-after Microsoft certifications.

    MTA certification

    An entry-degree MTA (Microsoft expertise affiliate) certification can duty a springboard for novice IT specialists. IT covers basic talents in a number of spheres of IT together with OS, utility construction, database, community, server administration, Cloud, HTML5 and javascript and extra.MTA cannot duty a step to MCSA, MCPor MCSD certifications, but it surely is enough enough to delivery a a success career in IT. To obtain MTA, you'll want to sit down for one test from 14 offered. here are some examples of MTA certification exams:

    Microsoft 98-349 exam

    ninety eight-349 exam is every bit of about windows OS fundamentals. The themes consist of the administration of information, folders, gadgets and purposes, as well as OS renovation, OS configurations and many extra.

    To locate more details about ninety eight-349 exam, talk over with Microsoft web page.

    Microsoft ninety eight-364 examination

    examination ninety eight-364 covers Database fundamentals and tests the candidate’s expertise concerning database objects creation, information manipulation, database administration, the understanding of core database concepts and greater.

    learn greater concerning the ninety eight-364 exam at Microsoft website.

    Microsoft ninety eight-365 exam

    98-365 verify is every bit of concerning the fundamentals of home windows Server administration. themes of this exam consist of the realizing of server roles, server efficiency management, server protection, server installation, storage andActive listing.

    find extra about ninety eight-365exam atMicrosoft web page.

    Microsoft ninety eight-366 exam

    exam ninety eight-366 covers networking fundamentals. It comprises of issues related to the understanding of network hardware, features, protocols and network infrastructures.

    To locate information about ninety eight-366exam, travel to Microsoft site.

    Microsoft ninety eight-375 examination

    98-375 exam is focused on the fundamentals ofHTML5application construction. The objectives encompass user Interface (UI) constructing, coding with JavaScript, user interface formatting withCascading trend Sheets(CSS) andApplication life Cycle administration.

    The particulars about 98-375exam can also breathe create at the Microsoft web page.

    subsequent-level certification is MCSA (Microsoft certified solutions affiliate). here are some in-demand MCSA alternatives:

    MCSA: Microsoft Dynamics 365 certification

    if you're supposed to drudgery with Dynamics 365 technologies, MCSA: Microsoft Dynamics 365 is the top-rated alternative for you. This affiliate-level certification confirms the candidate’s competencies and competencies regarding the customization, configuration and upgrade of this particular Microsoft product. The credential qualifies you for the roles of a system administrator, implementation advisor, Dynamics 365 developer, or technical sheperd engineer. To win licensed, design confident to stream two exams:

    Microsoft MB2-715 exam

    examination MB2-715 makes a speciality of Microsoft Dynamics 365 client engagement. The topics consist of Dynamics 365 environment administration,the management of Microsoft Outlook and mobile environments, the advent of consumer Organizational structure and greater.

    be trained more about MB2-715exam atMicrosoft website.

    Microsoft MB2-716 exam

    MB2-716 exam is dedicated to Microsoft Dynamics 365configurationandcustomization. The main aims of this test are Dynamics 365 entities, the implementation of entity relationships, the configuration of Microsoft Dynamics 365 and implementation of workflows, fields and commerce rules.

    more particulars about MB2-716exam can breathe create at the Microsoft web site.

    After you finished your MCSA: Microsoft Dynamics 365, you may additionally elect superior MCSE: company purposes certification with a view to provide you with even more chances.

    MCSA: Cloud Platform certification

    MCSA: Cloud Platform is an associate-stage certification meant for tyro specialists who drudgery with technologies in accordance with the Cloud. This credential qualifies you for the roles of Cloud administrator or Cloud architect. To achieve MCSA: Cloud Platform, you deserve to transparent two of the four provided checks: 70-532, 70-533, 70-535and 70-537 (the remaining one is now on building).

    Please occupy into account that MCSA: Cloud Platform credential retires on December 31, 2018, so you requisite to accelerate up in case you wish to win it.

    Microsoft 70-532 examination

    exam 70-532 makes a speciality of the construction of Azure options. The issues of the exam encompass the implementation of storage identification administration and statistics approach, application management, creation and administration of Azure digital Machines and more.

    read more about 70-532exam on the Microsoft web page.

    Microsoft 70-533 exam

    70-533 examination concentrates on the implementation of Azure infrastructure options. The main targets of the test are Azure identities, Azure protection, Azure App carrier Apps, ARM templates, virtual networks and a lot of extra.

    more particulars about 70-533exam can also breathe discovered on the Microsoft website.

    Microsoft 70-535 exam

    examination 70-535covers the architecting of Microsoft Azure options. The issues of this test consist of id solutions, security, laptop Infrastructure, Networking Implementation, the designing of facts Implementation and greater.

    To win extra assistance about 70-535 examination, talk over with the Microsoft web page.

    As they mentioned above, 70-537 examination is now unavailable. After you finished your MCSA: Cloud Platform credential, that you can opt for MCSE: Cloud Platform and Infrastructure certification, which will bring you to the knowledgeable degree. further, in this article, they will look to breathe on the details of this certification.

    MCSE: Cloud Platform and Infrastructure certification

    MCSE: Cloud Platform and Infrastructure is designed to validate the talents indispensable to drudgery with a edifying and contemporaneous information core. The certified particular person possesses skillability in cloud technologies, identity administration, networking and virtualization. please maintain in intellect that MCSE: Cloud Platform retires on December 31, 2018. as a artery to win certified, the candidate should first win a suitable MCSA credential and then transparent one exam from the listing of 10 offered. privilege here is an instance of MCSE exam alternate options:

    Microsoft 70-473 examination

    70-473 exam covers the design and implementation of Cloud information Platform solutions. The themes encompass database options ,scalability ,excessive availability ,security ,catastrophe restoration and greater.

    more counsel about 70-473examcan breathe discovered at the Microsoft web page.

    Now, let’s examine 70-473 exam in additional detail.

    Microsoft 70-473 exam particulars

    Microsoft 70-473 is a web Microsoft certification exam it is designed to validate the technical competency of the candidates by means of testing a wide selection of simple technological ideas comparable to designing and imposing of Cloud data Platform options.

    This certification confirms that you've got the capabilities mandatory to stream your enterprise to the cloud, increase consumer productivity and suppleness, in the reduction of facts loss and enrich data security on your corporation. The outlined expertise aid a candidate to purchase the talents in securing mobility administration options for great businesses and demonstrate simple edge in the usage of Microsoft Cloud features.

    The examination is centered at Database administrators or gurus attracted to certifications associated with Azure SQL and Azure VMs. To qualify for 70-473 examination, you deserve to acquire MCSA certification concerning windows Server 2016, Cloud Platform, Linux on Azure, or home windows Server 2012.

    The test is developed and at every bit of times reviewed via trade specialists. The examination scope covers a gain of technological themes. word that the higher the percentage, the more questions about that zone will latest in the examination.

    the artery to Qualify for the examination

    The choicest candidate for this exam is MCSA certified IT knowledgeable with the Amazing technical history who wish to enhance his/her talents and validate the talents in implementing and designing Microsoft data Platform options.

    The candidates should soundless even Enjoy valuable palms-on journey in cloud-primarily based and on-premises platform solutions in addition to with breathe well-liked with office 365, Microsoft Intune, firewalls, network topologies and devices and community ports.

    Candidates are anticipated to own the edge of the capabilities and lines of the Microsoft statistics Platform and breathe in a position to discharge privilege here initiatives:

  • establish tradeoffs
  • Make choices for designing public and hybrid cloud options
  • outline the applicable platform and infrastructure solutions to meet the mandatory operational, purposeful and deployment necessities through the reply lifecycle
  • exam facilities and suggestions

    Microsoft 70-473 examination carries about 40-60 questions which deserve to breathe answered in a hundred and fifty minutes. The can pervade of the attempt is $a hundred sixty five. The check is provided by artery of third-birthday celebration providers in an online platform and attainable in an array of languages.

    just before taking the checks, the candidates are expected to settle for the terms of a non-disclosure agreement that requires the candidate to maintain the assistance regarding the check content material exclusive. This settlement protects the safety and integrity of the Microsoft Certification application because it legally prohibits piracy or unauthorized consume of exam content.

    Candidates are additionally required to investigate their repute just before registering and making fee for the exam. In case of the unsuccessful attempt, they are usually not able to sit the verify and should no longer win a reimbursement for the expense made.

    a few minutes after the completion of the examination, the candidate will obtain the circulate or fail status, in addition to a printed file that gives the check rating and efficiency remarks. The exam start company forwards the ranking to Microsoft within 5 commerce days.

    Core competencies demonstrated

    Microsoft 70-473 examination exams the candidate’s capability to accomplish determined technical initiatives. The corresponding percentage shows the relative weight of each and every main theme matter enviornment on the exam. The greater the percent, the extra questions involving the certain topic you are going to discern on the verify.

  • Designing and imposing of database solutions for Microsoft Azure SQL Database and Microsoft SQL Server 20-25%.
  • This theme covers the skills in designing of a hybrid SQL Server solution, imposing of SQL Server on Azure digital Machines (VMs), designing of database solutions on SQL Server in Azure and Azure SQL database, imposing of Azure SQL Database and designing and implementing of MySQL and PostgreSQL database options in Azure.

  • Designing and imposing of safety (25%-30%).
  • This topic comprises the edge in designing and implementing of Azure SQL Database safety and SQL Server Database security.

  • Designing of elevated availability, disaster recuperation and scalability solutions (25%-30%).
  • This theme covers the candidate’s talents in designing and imposing elevated availability solutions, imposing scalable options and Azure SQL Database facts recuperation.

  • Monitoring and managing database implementations in Azure (25%-30%).
  • This theme covers the potential in monitoring and troubleshooting of SQL Server VMs on Azure and monitoring and troubleshooting of SQL Database.

    Microsoft 70-473 study at supplies

    below are one of the vital most valuable examine substances that a candidate can also consume to prepare for Microsoft 70-473 assessments.

  • on-line working towards: These are free online training lessons offered through world-type consultants to aid candidates in constructing technical advantage. The Microsoft studying partners software does present a gigantic gain of options to swimsuit the training wants of each candidate.
  • instructor-led practising: here's a school latitude on-demand Microsoft technology working towards provided throughout the Microsoft virtual Academy, which is equipped via Microsoft certified tutors.
  • that you can also opt for the apply assessments. To win greater information, verify privilege here titles: 70-473 Designing and implementing Cloud records Platform solutions Microsoft professional supervene check, Designing and enforcing Cloud information Platform options and Microsoft 70-473 Questions & answers.
  • All Microsoft assessments replicate up to date technical concepts and helping the a hit individuals to win employed, breathe greater productive and receive awareness of their container. Microsoft certifications give an edge to the professionals via providing them an internationally diagnosed proof of their knowledge, mastery and appreciation of altering technology developments.

    Microsoft certification offers the career opportunities for the specialists as the employers frequently consume credentials as alternative standards for recruitment. extra, the certification serves as a foundation for novel greater stage credentials.

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    70-413 exam Dumps Source : Designing and Implementing a Server Infrastructure

    Test Code : 70-413
    Test denomination : Designing and Implementing a Server Infrastructure
    Vendor denomination : Microsoft
    : 263 existent Questions

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    Designing and Implementing a Server Infrastructure

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    Implementing Fibre Channel SANs in a virtual server environment | killexams.com existent questions and Pass4sure dumps

    Fibre Channel (FC) SANs are a well-liked option for virtual server environments. They present edifying performance and security, and since many people already Enjoy Fibre Channel SANs implemented in their environment, they often stick with the selfsame technology for the virtual environments. However, Fibre Channel SANs are not privilege for everyone's virtual server platforms. They are expensive, and also require experienced administrators to implement them.

    In this podcast interview, Eric Siebert, a VMwareexpert and author of two books on virtualization, discusses FC SANs for virtual server environments. Learn about the advantages and disadvantages of implementing FC SANs to back your virtual server platform, what steps to occupy to set up a Fibre Channel SAN correctly and what requirements you should know before you elect a Fibre Channel SAN. Read his transcript below or download the MP3 recording.

    Listen to the Fibre Channel SANs mp;A.

    Fibre Channel is a well-liked option when it comes to virtual server environments--What are the benefits of using Fibre Channel SANS to back a virtual server platform?

    Eric Siebert: Typically Fibre Channel is one of the best performing and most secure of the storage technologies that are available today, so people travel for that because they want the performance and requirements that they really requisite and the most viable I/Os they can win . Fibre Channel has traditionally always been what they would implement to win that performance and security standpoint. Fibre Channel networks are every bit of hopefully isolated and kept on their own divide environments, so they are more secure than traditional and other types of networks fondness iSCSI.

    Fibre Channel is also commonly deployed in the enterprise storage architecture, so a lot of people Enjoy Fibre Channel SANs already that they can leverage. So in a lot of cases, rather than having to implement something from scratch, they already Enjoy a Fibre Channel SAN available that they could maybe expand on.

    Fibre Channel storage also has a block-level storage that can breathe used on other storage devices fondness NFS or file-level storage. And if you wanted to other things fondness boot from SAN, Fibre Channel SANs already Enjoy those features, and they're starting to become available in some of the other technologies as well, such as iSCSI, where you can boot from SAN and Enjoy a headless server. So you don't Enjoy to set aside disks in the server; it can just boot directly from the SAN and evade from a VM environment.

    What disadvantages or complications can you evade into with FC SANs for a virtual server environment?

    Siebert: There are two gigantic ones: cost and complexity. Typically Fibre Channel SANs are the most expensive option available, so if you're looking to implement one from scratch it's really expensive because you Enjoy to buy every bit of these expensive different components that are made specifically for Fibre Channel: Fibre Channel cables, Fibre Channel adapters that you Enjoy to set aside in your servers, switches and backend SAN storage, so the cost would breathe pretty high. The judgement it is so elevated is because of the performance – the cost is relative to that – you're going to Enjoy to pay a lot more money to win that performance, so cost is one of the major disadvantages of that.

    In terms of complexity, Fibre Channel SANs typically require specialized skill sets where your medium server administrator wouldn't Enjoy those skills to breathe able to administer it properly. Typically you requisite a specialized skill, and you requisite an administrator who really understands the technology and can implement it properly.

    How finish you set up a FC storage device to back virtual servers? What steps finish you requisite to finish to ensure everything runs smoothly?

    Siebert: It's pretty straight forward. You just Enjoy to breathe aware of things fondness speeds. There are different types of speeds for Fibre Channel, but typically today the most common one to consume is 4 GB. The newer ones are 8 GB, which provide double the speed. You don't want to mingle components; you want to Enjoy the disk that's going to evade at the lowest speed. So if you Enjoy a 2 GB or 1 GB card as your server, your switches are 4 GB or 8 GB and so is your backend storage, plus it's only going to operate on the lowest common accelerate denominator, so you want to design confident that you Enjoy every bit of your components at the selfsame accelerate to win the most value and accelerate out of your environment.

    Also reckon things fondness multipathing. You want to design confident you Enjoy redundancies so typically you would implement a multipath to a SAN, so it's every bit of the artery from the server where you would Enjoy two Fibre Channel adapters inside the server, switches, and then typically there are two controllers on the Fibre Channel SAN, so if any one component breaks you should always open a path to win to from the server to the SAN. If you implement multi-pathing and also using other technologies fondness active-active where both paths are active, you can win more performance out of it that way. That's always a edifying thought to maintain in intellect when you're implementing a Fibre Channel SAN.

    Overall, setting up a Fibre Channel SAN can breathe complicated, so typically you should design confident everything is set up properly and is working properly. Proper preparation is key for proper configuration. And drudgery closely with your SAN and storage administrators; design confident they understand your needs.

    Are there any requirements you requisite to know about before choosing an FC SAN? Does this storage option require more experienced administrators?

    Siebert: Yes requirements are the key here. You requisite to know your requirements. If you Enjoy applications that requisite a specific amount of I/O, you requisite to know what that is to breathe able to size your SAN properly. You shouldn't travel in there blind and assume that just because Fibre Channel SAN is going to breathe quickly that it will drudgery for you. You really requisite to travel out and finish the homework. finish an assessment of your environment, figure out what your I/O requirements are, if you Enjoy any character of redundancy requirements, and then figure out capacity as well. You requisite to know how much storage you requisite to buy for that Fibre Channel SAN to discern if it has the capacity for every bit of of your virtual machines.

    Other requirements to reckon are things fondness the features you need. There might breathe certain features you might want to implement on that SAN such as snapshot capabilities and replication. Also, if you Enjoy a disaster recovery strategy, you want to design confident you comprehend your needs for that because a lot of time you can breathe leveraging storage features to slouch from your main site to an alternate DR site. So you really requisite to assess your requirements and what benign of features and functionalities you're going to requisite before you travel out and buy one.

    Also there are some novel features for VMware fondness the vStorage APIs – there are certain feature sets that they Enjoy that a lot of SANs are supporting now. The vStorage APIs for array integration will offload some of the storage paths that traditionally some of the hypervisors would finish to the storage layer to design it a lot quicker, and so you can occupy a load off of your virtualization and set aside it on the storage infrastructure and that will help the performance of your virtual host as well as the chore on the storage device where it should be, and that makes it a lot more efficient.

    So basically you want to study around, evaluate, interrogate questions, win references, win your requirements and travel from there and design a determination and hopefully you can find the privilege Fibre Channel solution that meets your needs.


    Designing Network Infrastructure Security | killexams.com existent questions and Pass4sure dumps

    Network Infrastructure Security Overview

    Network infrastructure refers to the grouping of physical hardware and rational components which are needed to provide a number of features for the network, such as connectivity, routing and switching capabilities, network security, and access control. The physical infrastructure of the network refers to the physical design of the network together with the hardware components. The rational infrastructure of the network consists of every bit of the software components required to enable connectivity between devices, and to provide network security. The network's rational infrastructure consists of software products and networking protocols and services.

    While Windows Server 2003 provides a number of features and tools when you install it on a computer, you Enjoy to implement additional features and functionality on a server to provide the services and capabilities required by the organization and its users.

    There are a number of different risks that Enjoy an impact on an organization. Some of the primary threats which you should address are listed here:

  • Environmental threats pertain to both environmental disasters and disasters due to human intervention. Examples of environmental threats are fires, earthquakes, storms, faulty wiring, and so forth.Designing Network Infrastructure Security

  • Accidental threats relate to threats which are caused without malicious intent. incidental risks occur when an employee accidentally deletes notable files, or modifies data that should not Enjoy been changed.

  • Deliberate threats relate to threats which are caused with malicious intent as the primary objective. Examples of deliberate threats are viruses, Trojan horses, and every bit of other network attacks caused by hackers and intruders.

  • A typical security life cycle is consists of the following processes:

  • Determining and designing the security infrastructure: The design angle of the security life cycle includes elements such as identifying the resources of the organization that needs to breathe secured, and then designing the security infrastructure to protect these resources. The security design team should breathe accountable for creating and designing security policies for the organization.

  • Deploying and implementing security features and security policies: The security design team should also breathe accountable for implementing security features and security policies.

  • Continually managing the security solution: every bit of security software should breathe upgraded as necessary, and audit logs should breathe regularly examined.

  • A number of common steps or processes Enjoy to breathe completed to design network infrastructure security:

  • Determine the security requirements of the organization.

  • Plan network security which should breathe implemented.

  • Establish and create secure boundaries.

  • Implement security technologies for the network.

  • Implement server security technologies.

  • Implement application security technologies.

  • Implement user security technologies.

  • Implement an auditing strategy.

  • Implement a network monitoring strategy.

  • A few methods of securing your network infrastructure are listed here:

  • Physically secure every bit of mission-critical network servers: A few guidelines and recommendations for implementing physical security are circumstantial below:

  • All servers should breathe secured in a locked server room.

  • Only those individuals that requisite access should breathe permitted to access the server latitude using a key or security code. You can also implement a mechanism that monitors who enters and leaves the server room.

  • All hubs, routers and switches should breathe placed in a wiring closet, or in a locked cable room.

  • You should consume case locks on your servers. You can also install case locks on other systems that can breathe physically accessed.

  • You should restrict access to the floppy drive as well.Set a BIOS password on every bit of systems. This would forestall an unauthorized person from accessing the BIOS.

  • You should change the operating system selection timeout interval to 0 in order for Windows to boot automatically.

  • When you are setting up Windows, disconnect the server from the Internet.

  • Install Windows operating systems to a NTFS partition.

  • Ensure that you consume a tough local administrator password during setup.

  • Using the NTFS file system and its security features.

  • Using the Encrypting File System (EFS).

  • Securing network access points.

  • Enforcing user authentication.

  • Securing network access.

  • Enforcing the consume of tough passwords.

  • Securing confidential network service data as it moves over the network.

  • Securing confidential application data as it moves over the network.

  • Securing confidential user data as it moves over the network.

  • Each Windows server operating system provides different features, and different security configurations which can breathe enabled to enhance network security and server security. Before deciding on the operating system to utilize, you Enjoy to know which security features are required for your network design, as determined by the organization's requirements.

    Most organizations consume a security design committee or team to determine the security needs of the organization and to deploy security policies which can meet these requirements.

    The members of the network security design committee should breathe knowledgeable on a number of factors, including the following:

  • The mission critical resources of the organization.

  • The security weaknesses or vulnerabilities of the organization.

  • The threats to which the mission critical resources of the organization is exposed.

  • The resources which are mainly at risk.

  • The loss to the organization should particular resources of the organization breathe compromised.

  • The plane of security needed to secure the organization's resources.

  • The security features and security policies which can breathe used to secure the resources of the organization.

  • The security features and security policies which are pattern to secure particular resources.

  • The impact of implementing security features and security policies on employees, users and administrators.

  • The requirements for deploying identified security solutions.

  • Finding the balance between Security and Usability

    One of the trickiest challenges of designing network infrastructure security is to establish a balance between security and usability. The network has to breathe secure so that valuable network resources can breathe protected, but it also has to allow the enough extent of usability. Networks that are too secure, or that Enjoy an exceptional elevated plane of security can finish up having low levels of usability. This typically leads to users not being able to access network resources and services. On the other hand, a network that has an exceptionally low plane of network security has a not much higher plane of vulnerability to network attacks and data corruption.

    To find a balance between security and usability, the following approach is recommended:

  • Determine the risk to which the network and its data is exposed to, and then establish the plane of security needed to alleviate and protect against these risk: This would typically involve an assessment of the physical security of your network infrastructure:

  • Assessing whether the physical structure is secured.

  • Assessing whether the network location is secured.

  • Determining whether access to the physical structure is access controlled.

  • Determine the impact of data being compromised.

  • Determine which data is valuable and mission critical data: Valuable and mission critical data would typically comprehend usernames and passwords, confidential customer information, company pecuniary and legal information, and so forth. As mentioned previously, one of the challenges you physiognomy when designing network infrastructure security is to find a balance between security and usability. You also requisite to find a balance between securing valuable or mission critical data and performance of the network. For each traffic class that should breathe secured, an additional layer of processing is added to the actual processing of IP packets. This makes the process of identifying valuable and mission critical data a bit more complicated. You requisite to find an acceptable balance between applying too much security and applying too petite security.

  • Determine which security policies requisite to breathe implemented. You should only attempt to determine the security policies that requisite to breathe implemented after you Enjoy determined the risk that the network and its data is exposed to, and the data that is considered valuable and mission critical data. The security policies that you identify should breathe based on every bit of of this previously collected information. Windows Server 2003 and the IPSec framework specify three levels of security. IPSec is a framework of open standards which can breathe used to encrypt TCP/IP traffic. IPSec works by encrypting the information contained in IP datagrams through encapsulation. This in rotate provides network plane data integrity, data confidentiality, data source authentication, and replay protection. To secure data pitiful over the intranet, extranet, and Internet, IPSec can breathe used. The three levels of security specified by Windows Server 2003 and the IPSec framework are listed here:

  • Minimum security level: This is the default plane of security. The minimum security plane has the following characteristics:

  • The system and its data is exposed to low risk, and not to substantial risk

  • IPSec is not implemented.

  • No confidential or valuable data is exchanged.

  • Standard security level: The benchmark security plane has the following characteristics:

  • There are a number of computers and servers that store mission critical, sensitive data. These servers requisite to breathe secured.

  • Windows Server 2003 utilizes security policies to secure valuable data. The Client (Respond Only) and Server (Request Security) policies can breathe utilized to secure data.

  • High security level: The elevated security plane has the following characteristics:

  • There a number of computers and servers that store highly sensitive data. These servers requisite to breathe highly secured.

  • All communication has to breathe secured.

  • The Windows Server 2003 Secure Server (Require Security) policy can breathe used to provide the highest plane of security to secure data.

  • Identify how the optimal manner of implementing security policies: There are a number of methods which can breathe used to implement security policies. The recommended manner is through IPSec policies that comprise of a number of IPSec rules. An IPSec rule contains the following components:

    When you configure and manage IPSec policies, you would basically breathe configuring a number of aspects of IPSec policies:

  • Assign the predefined default IPSec policies OR

  • Create customized IPSec policies that comprehend customized IPSec rules and filters.

  • Control how IPSec policies are applied.

  • Apply IPSec policies at different levels on the network. IPSec policies can breathe applied at the following levels within a network:

  • Implement security technologies and management requirements. You Enjoy to ensure that these technologies are both implemented and available. ActiveDirectory was the notable feature introduced in Windows 2000 because it brought about a few notable domain structural changes. Domains in active Directory consume the DNS domain naming structure, and not the NetBIOS naming structure used in Windows NT domains. Because of DNS, active Directory domains are structured in a hierarchical model. Domain trees is the concept used to picture hierarchically structured groups of domains with a contiguous namespace, while the grouping of trees with a noncontiguous namespaces are called forests. active Directory should breathe deployed to ensure that the network infrastructure is as secured as can be. active Directory enables you to discharge policy based administration through Group Policy. Through group policies, you can deploy applications and configure scripts to execute at startup, shutdown, logon, or logoff. You can also implement password security, control certain desktop settings, and redirect folders. With active Directory, permissions control access to resources, while user rights define what actions users can perform. Security groups are considered security principal accounts because they can accommodate user accounts. It is the security principal accounts that are used in authentication and access control. The security settings of a security principal account controls whether the user, group, or computers are authorized to access the following:

  • You can apply benchmark permissions or special permissions to active Directory objects. Access control and authentication are extremely notable components in active Directory security. Domain and forest functional levels provides the means by which you can enable additional domain-wide and forest-wide active Directory features, remove outdated backward compatibility within your environment, and help active Directory security.An organizational unit (OU) is a container that is used to organize active Directory objects into rational administrative groups. An OU enables you to apply security policies, deploy applications, delegate administrative control for active Directory objects, and to evade scripts. A edifying security management strategy would breathe to group computers that Enjoy similar roles into active Directory OUs. You can then apply IPSec policies and security templates to every bit of the computers located within the OU.

  • Implement a secure, yet simple manner for users to access the necessary resources: As mentioned previously, you Enjoy to determine the balance between securing valuable data and allowing authorized users to access the necessary resources. The higher the plane of security, the slower the response times users experience. Using group policies to control security policies, and using IPSec and smart cards are options that should breathe explored.

  • Determining Security Requirements of the Organization

    To determine the security requirements of the organization, you Enjoy to comprehend a number of commerce factors:

  • The commerce model that the organization uses greatly influences the character of security an organization implements. An organization that has world-wide branches would Enjoy different security requirements to a commerce that has a sole office.

  • To successfully implement security, you Enjoy to know how commerce processes within the organization work. You Enjoy to ensure that security does not forestall commerce processes from being carried out.

  • As the commerce grows so too must the security policies and processes breathe able to cater for this growth.

  • Determine the risk tolerance of the organization. The plane of risk tolerance would disagree between organizations.

  • Determine whether there are any laws and regulations that the organization has to adhere to. This is especially notable when you draw up the security design.

  • The management strategy being used should breathe included as well. Organizations can consume either a centralized management strategy or a decentralized management strategy.

  • The existing security policies and procedures should breathe included when you define the security requirements of the organization

  • The pecuniary stance of the organization would also influence which security design is implemented.

  • Assessing the existing security processes and security policies would typically involve determining what the current security processes and security policies are, and whether these can breathe improved to meet the security requirements of the organization.

    There are a number of recommendations which you can consume to match the commerce requirements to the security plan:

  • The organization uses commerce processes,

  • You should determine how these commerce processes stream and how the data associated with these processes flow.

  • You should determine the users that requisite to access services used in the commerce processes.

  • The organization uses a centralized management strategy,

  • The organization uses a decentralized management strategy,

  • You should determine the rights that users require.

  • You should determine whether users requisite administrative abilities on the network, and if yes, determine who those users are.

  • The risk tolerance plane of the organization indicates an aversion to risks,

  • You should determine the risks that the organization is not prepared to tolerate.

  • Identify the actions which are necessary should the risk become a reality, and then comprehend this in the security plan.

  • The organization expects commerce growth in the next number of years,

  • You should try to evaluate how many users and computers will breathe needed to provide for future commerce expansion.

  • Try to determine how the commerce will breathe geographically dispersed.

  • Designing Security based on Technical Requirements

    There are also a number of technical requirements which could Enjoy an impact on your security plan, that Enjoy to breathe met: The common technical requirements are listed here:

  • How users and computers are distributed has a direct impact on how security is implemented for an organization. The distribution and size of these resources would impact:

  • Before network infrastructure security can breathe implemented, the organization has to determine what the desired levels of performance which Enjoy to breathe maintained are. For instance, deploying additional authentication methods, and implementing encryption technologies impress performance levels.

  • The methods in which data is accessed would impress the security plan. You should comprehend every bit of the components used to access data:

  • Users

  • Computers

  • Protocols

  • Services

  • Applications

  • How remote branches access the corporate network also has an impact on the security plan. Dedicated network links or virtual networking can breathe used to enable connectivity to the corporate network. Included in your security plan, should breathe the plane of encryption that is required for WAN links.

  • IPSec Fundamentals Summary

    IPSec is a framework of open standards for encrypting TCP/IP traffic within networking environments. IPSec works by encrypting the information contained in IP datagrams through encapsulation to provide data integrity, data confidentiality, data source authentication, and replay protection. IPSec uses cryptography to provide authentication, data integrity, and data confidentiality services.

    IPSec uses he Authentication Header (AH) protocol and Encapsulating Security Payload (ESP) protocol to provide data security on client computers, domain servers, corporate workgroups, LANs, WANs and remote offices. The Authentication Header (AH) protocol provides data authentication and integrity, and can breathe used on its own when data integrity and authentication are notable to the organization but confidentiality is not. The AH protocol does not provide for encryption, and therefore cannot provide data confidentiality. The Encapsulating Security Payload (ESP) protocol ensures data confidentiality through encryption, data integrity, data authentication, and other features that back optional anti-replay services. To ensure data confidentiality, a number of encryption algorithms are used. The main dissimilarity between the AH protocol and the ESP protocol is that the ESP protocol provides every bit of the security services provided by the AH protocol, together with data confidentiality through encryption.

    When you install IPSec, the two main IPSec components which are installed are the IPSec Policy Agent and the IPSec driver. The IPSec Policy Agent is a service running on a Windows Server 2003 computer that accesses IPSec policy information. The IPSec Policy Agent accesses the IPSec policy information in the local Windows registry or in active Directory, and then passes the information to the IPSec driver. The IPSec driver performs a number of operations to enable secure network communications such as initiating IKE communication, creating IPSec packets, encrypting data, and calculating hashes.

    IPSec can operate in either Tunnel mode or in Transport mode. IPSec Tunnel mode should breathe used to provide security for WAN and VPN connections that consume the Internet. In tunnel mode, IPSec encrypts the IP header and the IP payload. With tunneling, the data contained in a packet is encapsulated inside an additional packet. The novel packet is then sent over the network. In Transport Mode, the default mode of operation used by IPSec, only the IP payload is encrypted. Transport mode is used for end-to-end communication security between two computers on the network.

    The security features provided by IPSec are summarized here:

  • Authentication; a digital signature is used to verify the identity of the sender of the information. IPSec can consume Kerberos, a preshared key, or digital certificates for authentication.

  • Data integrity; a hash algorithm is used to ensure that data is not tampered with. A checksum called a hash message authentication code (HMAC) is calculated for the data of the packet. When a packet is modified while in transit, the calculated HMAC changes. This change will breathe detected by the receiving computer.

  • Data privacy; encryption algorithms are utilized to ensure that data being transmitted is undecipherable.

  • Anti-replay; prevents an attacker from resending packets in an attempt to gain access to the private network.

  • Nonrepudiation; public key digital signatures are used to prove message origin.

  • Dynamic rekeying; keys can breathe created during data sending to protect segments of the communication with different keys.

  • Key generation; the Diffie-Hellman key agreement algorithm is used to enable two computers to exchange a shared encryption key.

  • IP Packet filtering; the packet filtering capability of IPSec can breathe used to filter and shroud specific types of traffic, based on either of the following elements or on a combination of them:

  • IP addresses

  • Protocols

  • Ports

  • To secure and protect data, IPSec uses cryptography to provide the following capabilities:

  • Authentication: Authentication deals with verifying the identity of the computer sending the data, or the identity of the computer receiving the data. The methods which IPSec can consume to authenticate the sender or receiver of data are:

  • Digital certificates: Provides the most secure means of authenticating identities. Certificate authorities (CAs) such as Netscape, Entrust, VeriSign, and Microsoft provide certificates which can breathe used for authentication purposes.

  • Kerberos authentication: A downside of using the Kerberos v5 authentication protocol is that the identity of the computer remains unencrypted up to the point that the whole payload is encrypted.

  • Pre-shared keys; should breathe used when null of the former authentication methods can breathe used.

  • Anti-replay ensures that the authentication data cannot breathe interpreted as it is sent over the network. In addition to authentication, IPSec can provide nonrepudiation. With nonrepudiation, the sender of the data cannot at a later stage traverse actually sending the data.

  • Data integrity: Data integrity deals with ensuring that the data received at the recipient has not been tampered with. A hashing algorithm is used to ensure that the data is not modified as it is passed over the network. The hashing algorithms which can breathe used by IPSec are:

  • Message Digest (MD5); a one-way hash that results in a 128-bit hash which is used for integrity checking.

  • Secure Hash Algorithm 1 (SHA1); a 160-bit covert key to generate a 160-bit message digest which provides more security than MD5.

  • Data confidentiality: IPSec ensures data confidentiality by applying encryption algorithms to data before it is sent over the network. If the data is intercepted, encryption ensures that the intruder cannot interpret the data. To ensure data confidentiality, IPSec can consume either of the following encryption algorithms:

  • Data Encryption benchmark (DES); the default encryption algorithm used in Windows Server 2003 which uses 56-bit encryption.

  • Triple DEC (3DES); data is encrypted with one key, decrypted with another key, and encrypted again with a different key.

  • 40-bit DES; the least secure encryption algorithm.

  • IPSec Policies Summary

    IPSec policies are used to apply security in your network. The IPSec policies define when and how data should breathe secured. The IPSec policies also determine which security methods to consume when securing data at the different levels in your network. You can configure IPSec policies so that different types of traffic are affected by each individual policy.

    The IPSec policy components are:

  • IP filter; informs the IPSec driver on the character of inbound traffic and outbound traffic which should breathe secured.

  • IP filter list; used to group multiple IP filters into a sole list in order to seclude a specific set of network traffic.

  • Filter action; used to define how the IPSec driver should secure traffic.

  • Security method; refers to security types and algorithms used for the key exchange process and for authentication.

  • Connection type: identifies the character of connection which the IPSec policy impacts.

  • Tunnel setting; the tunnel endpoint's IP address/DNS name.

  • Rule; a grouping of components such as filters and filter actions to secure a specific subset of traffic in a particular manner:

  • IPSec policies can breathe applied at the following levels within a network:

    Windows Server 2003 IPSec deployments comprehend predefined IPSec rules, filter lists, filter actions, and three default IPSec policies. Each default IPSec policy contains a set of predefined rules, filter lists and filter actions.

    The three predefined IPSec policies are:

  • Client (Respond Only): The Client (Respond Only) default IPSec policy is the least secure predefined policy. Here, the computer assigned the policy never initiates secure data communication. Th computer only responds to IPSec requests from those computers who request it. The Client (Respond Only) predefined IPSec policy contains the default response rule that creates dynamic IPSec filters for inbound and outbound traffic based on the protocol and port which was requested.

  • Secure Server (Request Security): With the Secure Server (Request Security) default IPSec policy, the computer prefers and initiates secure data communication. If the other computer supports IPSec, secure data communication will occupy place. If the other computer does not back IPSec, the computer will allow unsecured communication with that computer.

  • Secure Server (Require Security): With the Secure Server (Require Security) default IPSec policy only secure data communication is allowed. If the other computer does not back IPSec, the connection is not established.

  • You can create customized IPSec policies that comprehend customized rules and filters that suit specific security requirements of the organization. You can also create your own IPSec policy by using the IP Security Wizard which you can initiate from within the IP Security Policy Management MMC.

    Microsoft Best Practices for Implementing IPSec

    The Microsoft best practices for implementing IPSec are summarized here:

  • You requisite to map your IPSec implementation and configuration.

  • You should develop a test tab and consume the test lab to test the implementation of your IPSec policies. There are a few features of IPSec that are not supported in every bit of versions of the Windows operating systems. Windows Server 2003 does though back every bit of the features of IPSec and it also includes IPSec-specific enhancements.

  • Because preshared keys is considered the least secure supported authentication method, you should only consume preshared keys when you cannot consume digital certificates or the Kerberos v5 authentication protocol.

  • You should not consume the Kerberos v5 authentication protocol for computers that are connected to the Internet. This is primarily because the identity of the computer remains unencrypted up to the point that the whole payload is encrypted.

  • You should consume digital certificates as the authentication manner for computers that are connected to the Internet. When sending the certificate request, finish not however transmit the denomination of the Certification Authority (CA) together with the request.

  • For computers that are connected to the Internet, only allow secured connections and communication to occur. Ensure that the Allow Unsecured Communication With Non-IPSec aware Computers option and Accept Unsecured Communication, But Always Respond Using IPSec option is disabled.

  • Diffie-Hellman key agreement enables two computers to create a shared private key that authenticates data and encrypts an IP datagram. IPSec in Windows Server 2003 includes back for the Group 3 2048-bit Diffie-Hellman key exchange which is much stronger and more tangled than the previous Group 2 1024-bit Diffie-Hellman key exchange. If you requisite backward compatibility with Windows 2000 and Windows XP, then you Enjoy to consume the Group 2 1024-bit Diffie-Hellman key exchange. You should though never consume Group 1 768-bit Diffie-Hellman key exchange because it offers the lowest keying strength.

  • If you are running Windows XP and Windows Server 2003 computers, consume the Triple Data Encryption benchmark (3DES) encryption algorithm which provides the strongest encryption algorithm. When you consume 3DES, data is encrypted with one key, decrypted with another key, and encrypted again with a different key. If you running Windows 2000 computers, install the elevated Encryption Pack or Service Pack 2 so that 3DES can breathe used.

  • Securing DNS Infrastructure

    The common threats to a DNS infrastructure are:

  • Denial-of-service (DoS) attacks occur when DNS servers are flooded with recursive queries in an attempt to forestall the DNS server fro servicing legitimate client requests for denomination resolution. A successful DoS assault can result in the unavailability of DNS services, and in the eventual shut down of the network.

  • Footprinting occurs when an intruder intercepts DNS zone information. When the intruder has this information, the intruder is able to determine the DNS domain names, computer names, and IP addresses that are being used on the network. The intruder can then utilize this information to rule on which computers he/she wants to attacks.

  • IP Spoofing: After an intruder has obtained a valid IP address from a footprinting attack, the intruder can consume that IP address to send malicious packets to the network, or access network services. The intruder can also consume the valid IP address to modify data.

  • A redirection assault occurs when an intruder is able to design the DNS server forward or redirect denomination resolution requests to the incorrect servers. In this case, the incorrect servers are under the control of the intruder. A redirection assault is achieved by an intruder corrupting the DNS cache in a DNS server that accepts unsecured dynamic updates.

  • There are a number of by which you can secure DNS servers:

  • If you are using DNS zone files to store zone data, change the zone file permissions or the folder's permissions that stores the zone files to only allow replete Control to the System group.

  • The DNS registry keys stored in HKEY_LOCAL_MACHINESystemCurrentControlSetServicesDNS should breathe secured as well.

  • If you Enjoy a DNS server that is not configured to resolve Internet names, you should configure the root hints to point to those DNS servers hosting the root domain.

  • If you Enjoy a DNS server that is not configured with forwarders, and the DNS server does not respond to any DNS clients directly, then it is recommended that your disable recursion for the DNS server.

  • Configure the Secure cache against pollution option to protect the DNS server from an intruder that might breathe attempting to pollute the DNS cache with the incorrect information.

  • Limit the number of IP addresses that the DNS server listens to for DNS queries

  • The DNS security recommendations for an external DNS implementation are summarized below:

  • You should acclimate your DNS servers, and site your DNS servers in a DMZ or in a perimeter network.

  • Ensure that access rules and packet filtering is defined on your firewalls to control source and destination addresses and ports.

  • Install the latest service packs on your DNS servers, and remove every bit of unnecessary services from these servers.

  • Eliminate every bit of sole points of failure.

  • Host your DNS servers on different subnets and ensure that your DNS servers Enjoy different configured routers.

  • Ensure that zone transfer is only allowed to specific IP addresses.

  • Secure zone transfer data by using VPN tunnels or IPSec.

  • You can consume a stealth primary server to update secondary DNS servers which are registered with ICANN.

  • For Internet facing DNS servers, disable recursion, disable dynamic updates, and enable protection against cache pollution

  • Monitor your DNS logs. DNS logging is enabled by default. The DNS service generates DNS logging information that you can consume to monitor for attacks on your DNS servers.

  • Designing Security for Data being Transmitted

    Other than IPSec, there are a number of methods which you can consume to secure data transmission for a number of different circumstances:

  • Secure Sockets Layer/Transport Layer Security (SSL/TLS) protocol

  • S/MIME

  • Server Message shroud (SMB) signing

  • Port Authentication for switches

  • Through segmented networks

  • Secure Sockets Layer/Transport Layer Security (SSL/TLS) Protocol Overview

    The Secure Sockets Layer (SSL) protocol was developed by Netscape Communications to secure communication over the Internet. SSL works at the transport layer of Transmission Control Protocol/Internet Protocol (TCP/IP), which makes the protocol independent of the application layer protocol functioning on top of it. SSL is an open benchmark protocol and is supported by a gain of servers and clients.

    SSL can breathe utilized for the following:

  • To encrypt Web traffic using Hypertext Transfer Protocol (HTTP). When HTTP is utilized together with SSL, it is known as HTTPS.

  • To authenticate Web servers, and to encrypt communications between Web browsers and Web servers.

  • To encrypt mail and newsgroup traffic.

  • SSL works by combining public key cryptography and covert key encryption to ensure data confidentiality. The Rivest-Shamir-Adleman (RSA) public key algorithm is used to generate the certificates, and the public and private key pairs utilized in SSL. When a client Web browser connects to a Web server that is configured for SSL, a SSL handshake process is initiated with the Web server. The SSL handshake process occurs to negotiate the covert key encryption algorithm which the client and Web server will utilize to encrypt the data which is transmitted in the SSL session.

    Transport Layer Security (TLS) is a internet benchmark version of Secure Sockets Layer (SSL), and is very similar to Secure Sockets Layer version 3 (SSLv3). The key differences between SSLv3 and TLS are:

  • You can extend TLS by adding novel authentication methods.

  • TLS utilizes session caching, thereby improving on SSL performance.

  • TLS also distinctly separates the handshake process from the record layer. The record layer holds the data.

  • The different situations where an SSL/TLS implementation normally occurs:

  • SSL/TLS can breathe utilized to authenticate client access to a secure site. You can require client and server certificates, and only allow access to the site to those clients that are authenticated.

  • Applications which back SSL can require authentication for remote users logging on to the system.

  • Exchange servers can consume SSL/TLS to provide data confidentiality when data is transmitted between servers on the intranet or Internet.

  • The benefits of implementing SSL/TLS are:

  • SSL/TLS is smooth to deploy.

  • Server authentication, and client authentication (optional) occurs.

  • Message confidentiality and integrity are ensured.

  • The parties partaking in the secure session can elect the authentication methods, and encryption and hash algorithms.

  • The shortcomings associated with deploying SSL/TLS are:

  • SSL/TLS needs additional CPU resources to establish the secure session between the server and client.

  • Because SSL/TLS utilizes certificates, you would requisite administrators to manage these certificates, and the certificate systems.

  • S/MIME Overview

    Secure /Multipurpose Internet Mail Extensions (S/MIME) can breathe used to provide end-to-end security for e-mail traffic. You can implement S/MIME to digitally sign e-mail messages being transmitted, thereby protecting the information from being modified.

    Digitally signing e-mail messages provides the following key security features:

    Microsoft Exchange Server 2000 and Exchange Server 2003 back S/MIME. To implement S/MIME, S/MIME requires e-mail application back only. The e-mail servers finish not requisite to back S/MIME.

    Server Message shroud (SMB) Protocol Signing Overview

    Server Message shroud (SMB) signing can breathe implemented to ensure the validity and integrity of data in transit between a client and a server. Server Message shroud (SMB) signing can therefore breathe used to forestall man-in-the-middle attacks. SMB signing ensures the authenticity of a user and the server on which the data resides. To forestall the modification of SMB packets while in transit, SMB supports the digital signing of SMB packets. The signature is then verified at the recipient computer. To sign SMB packets, a mathematical algorithm is evade over specific fields within the packet, to cipher a mathematical result. The recipient runs the selfsame mathematical algorithm and then compares the mathematical result. When the two mathematical results match, it means that the data was not modified while in transit. A failure on either the server finish or client finish results in data not being transmitted.

    To protect against the impersonation of clients and servers in elevated security networking environments that comprehend Windows 2000 based clients and down-level Windows clients, reckon implementing SMB signing.

    SMB signing is negotiated between the client and the server at the time when the SMB session is established:

  • A client wants to establish a connection with a server that is defined to require SMB signing.

  • The server responds by sending a challenge to the server. The challenge takes the form of the data that the client will encrypt to the server.

  • The client responds by encrypting the challenge with a 168-bit session key. The session key is calculated from the password of the user. Both the response and the actual algorithm which was utilized to encrypt the challenge are sent to the server.

  • The server utilizes its stored value for the user password to carry out the selfsame algorithm on the challenge, and then compares its results to the results received from the client. Authentication of the user occurs when there is a match between the mathematical results.

  • The server and client then negotiate the SMBs version which will breathe used. The version selected is the highest SMBs version supported by both the server and the client.

  • All messages sent between the client and server is protected through the calculation of a digest. The digest is then included with each message.

  • When you configure a security template to utilize SMB signing, you can select between the following options:

  • Microsoft network client Digitally sign communications (always)

  • Microsoft network client Digitally sign communications (if server agrees)

  • Microsoft network server Digitally sign communications (always)

  • Microsoft network server Digitally sign communications (if client agrees)

  • When designing SMB signing security, reckon the following factors:

  • By default, server finish SMB signing is only enabled on domain controllers. It is not enabled for member servers.

  • By default, client finish SMB signing is enabled on domain controllers, servers, and workstations.

  • If you want every bit of communication with a server to require SMB signing;

  • If you want communication with a server to allow SMB signing and unsigned communications;

  • Designing Security for Wireless Networks

    The different categories of wireless networks are:

  • Wireless local zone networks (WLANs) design it viable for data to breathe shared within a local area. Wireless bridges connect devices to the wireless network, and can also connect two wireless networks.

  • Wireless metropolitan zone networks (WMANs) design it viable to connect buildings in a city. WMANs consume either infrared or radio frequency.

  • The second generation of Wireless wide zone networks (WWANs) technology is used by cellular phones at the moment. Global System for Mobile Communications (GSM), Cellular Digital Packet Data (CDPD) and Code Division Multiple Access (CDMA) are enterprises that provide WWAN technologies.

  • Wireless personal ara networks (WPANs) connect personal devices so that data can breathe shared over an area. The personal devices that WPANs connect are devices such as personal digital assistants (PDAs), laptop computers and cellular phones. WPANs can operate using either infrared or radio frequency.

  • Wireless networks are exposed to the following types of threats are

  • Data modification; data is modified while being transmitted

  • Eavesdropping; data is captured while being transmitted.

  • Denial of service (DoS); the server is flooded with unauthorized requests, making it impossible for the server to service authorized user requests.

  • Spoofing; data is modified so that it looks as though it came from the sender/receiver.

  • Free-loading; network bandwidth is used by an unauthorized individual.

  • Accidental network access; a user with a wireless connection on a device accidentally accesses the network.

  • Rogue wireless networks; authorized users create an unauthorized wireless LAN, connected to the company network.

  • To secure wireless networks and wireless connections, administrators can require every bit of wireless communications to breathe authenticated and encrypted. There are a number of wireless security technologies that can breathe used to protect wireless networks from the different types of attacks that these networks are vulnerable to.

    The more common technologies used to protect wireless networks from security threats are:

  • Wired Equivalent Privacy (WEP) encryption

  • Wi-Fi Protected Access (WPA)

  • IEEE 802.1X authentication

  • To provide protection from casual eavesdropping, there are a number of options which WEP provides, including the following:

  • With 64-bit encryption the length of the encryption key defines the degree of encryption that is provided to secure transmissions.

  • 128-bit encryption provides greater security than 64-bit encryption.

  • When WEP is configured with the No encryption option, every bit of transmissions are sent in transparent text.

  • A few advantages of using WEP to forestall intruders from examining traffic in transit are listed here:

  • WEP is smooth to implement. You only Enjoy to configure the encryption key on the APs and your clients.

  • WEP can provide basic security for WLAN applications.

  • Transmission privacy is ensured through RC4 encryption. This means that the shared covert key has to breathe used for decryption.

  • Transmission integrity is ensured by the CRC-32 checksum.

  • 802.1X authentication uses the Extensible Authentication Protocol (EAP) to provide authenticated communication between the client, the wireless access point (WAP), and a Remote Access Dial-In User Server (RADIUS) service. The Extensible Authentication Protocol (EAP) is a internet Engineering chore constrain (IETF) benchmark protocol. To provide a secure authentication process, the EAP protocol regularly produces a novel encryption key. This in rotate reduces the vulnerabilities of the WEP protocol.

    The authentication components used in the 802.1X authentication process are:

  • EAP-TLS authentication: With EAP-TLS authentication, public key certificates are used to authenticate the RADIUS service, and the client. EAP-TLS authentication is a stronger authentication manner than PEAP authentication. To implement EAP-TLS authentication, you requisite to consume a Public Key Infrastructure (PKI).

  • Protected EAP (PEAP) authentication: While EAP-TLS utilizes public key certificates to authenticate clients; PEAP authentication utilizes a user denomination and password to authenticate clients. EAP-TLS is therefore the stronger authentication manner to authenticate wireless clients. One edge of using PEAP authentication is that it is smooth to implement. When PEAP authentication and the RADIUS service are consume together, the encryption keys Enjoy to breathe changed on a regular basis. This in rotate ensures that WEP encryption cannot breathe easily broken. The PEAP authentication process has the following two stages:

  • The RADIUS server is authenticated through the examination of its public key certificate. A Transport Layer Security (TLS) session is established between the client and the RADIUS server.

  • An additional EAP manner within the PEAP session authenticates the client to the RADIUS service.

  • RADIUS service: The RADIUS service is used mainly to authenticate dial-up users, and can breathe used to authenticate wireless users when they attempt to connect to the network. One of the main benefits of using the RADIUS service is that user authentication for wireless networks are centralized. When a client transmits a request to establish a connection, the RADIUS service verifies the identity of the client by looking for a match in its authentication database. You can also configure a maximum session time circumscribe which forces clients to regularly re-authenticate to the RADIUS service. During re-authentication, a novel shared covert is generated, which makes it more difficult for attackers to decipher the shared covert keys.

  • When designing security for wireless networks, the factors listed below Enjoy to breathe determined or clarified:

  • Determine whether the Wi-Fi Protected Access (WPA) protocol or the Wired Equivalent Privacy (WEP) protocol will breathe used.

  • If you select to consume the WAP protocol, determine whether your hardware needs to breathe upgraded to back WPA.

  • If you select to consume the WEP protocol, determine whether 64-bit or 128-bit encryption will breathe used.

  • Determine whether 802.1X authentication will breathe used.

  • Determine whether wireless clients will consume IPSec.

  • Determine whether MAC address filtering will breathe used to circumscribe wireless access based on MAC addresses.

  • Determine whether Group Policy will breathe used to configure wireless client security settings; or whether it will breathe manually configured.

  • Determine whether your wireless network security strategy involves monitoring of wireless network activity, and if yes, how and when will you monitor wireless network traffic.

  • Maintaining a Security Plan

    The typical circumstances under which a security map should breathe updated are summarized here:

  • A change occurs to the existing organizational structure.

  • There is a change in the existing security policy or strategy of the organization.

  • Microsoft issued a novel security update to deal with a security threat.

  • Mergers and takeovers usually breathe of value an expansion or complete modification of existing security plans.

  • One of the challenges you physiognomy when designing network infrastructure security is to maintain an already implemented security plan. This is necessary to ensure that your existing security map remains current, valuable and effective.

  • To maintain updated on every bit of novel security threats;

  • To maintain up to date on every bit of released security fixes;

  • To design certain that the security map is based on the security policy;

  • Regularly update the security map when modifications are made to the security policy of the organization.

  • Regularly examine the security map to ensure that it is soundless based on the security policy.


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    Operations & Process Management: Principles & Practice for Strategic ImpactOperations & Process Management: Principles & Practice for Strategic Impact
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    Publisher : Pearson (Feb 2018)
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