Search

Microsoft Windows 7 Improved Network Access

Loading...

Flash Player 9 (or above) is needed to view presentations.
We have detected that you do not have it on your computer. To install it, go here.

0 comments

Post a comment

    Post a comment
    Embed Video
    Edit your comment Cancel

    Notes on slide 1

    Slide Title: FeedbackKeywords: Key Message: Slide Builds: 0Slide Script: .Slide Comment: To Send feedback on this slide, use the hyperlink on the feedback slide at the start and end of this deck.Additional Information:

    Slide Title: DirectAccess Technical DetailsKeywords: DirectAccess, Remote Connection, Key Message: Slide Builds: 3Slide Script: DirectAccess overcomes the limitations of VPNs by automatically establishing a bi-directional connection from client computers to the corporate network. DirectAccess is built on a foundation of proven, standards-based technologies. Let’s walk through this scenario:Here, the DirectAccess client computer is outside the corporate network and attempts to connect to an intranet Web site that an administrator specified during DirectAccess configuration. If the Web site is available, the DirectAccess client determines that it is already connected to the intranet, and the DirectAccess connection process stops. If the Web site is not available, the DirectAccess client determines that it is connected to the Internet and the DirectAccess connection process continues.The DirectAccess client computer connects to the DirectAccess server using IPv6 and IPsec. If a native IPv6 network isn’t available (and it probably won’t be when the user is connected to the Internet), the client establishes an IPv6-over-IPv4 tunnel. As part of establishing the IPsec session, the DirectAccess client and server authenticate each other using computer certificates for authentication. This enables IT to manage the computer before the user logs on. Optionally, you can require a smart card for user authentication. DirectAccess also uses IPsec to provide encryption for communications across the Internet.

    [BUILD1] By validating Active Directory group memberships, the DirectAccess server verifies that the computer and user are authorized to connect using DirectAccess. [BUILD2] Once the connection process is complete, the DirectAccess server begins forwarding traffic from the DirectAccess client to the intranet resources to which the user has been granted access. DirectAccess provides end-to-end connectivity and projection to IPv6 and IPSec enabled computers by establishing an IPsec session through the DirectAccess server to each application server to which they connect. This provides the highest level of security because you can configure access control on the DirectAccess server. However, this architecture requires that application servers run Windows Server 2008 or Windows Server 2008 R2 and use both IPv6 and IPsec. [BUILD3] DirectAccess requires you configure your intranet routing infrastructure to support native IPv6, which many routers and network devices currently support. For connecting to IPv4-only devices and networks, DirectAccess provides a straightforward way to begin IPv6 deployment without requiring an infrastructure upgrade. You can use the 6to4 and Teredo IPv6 transition technologies for connectivity across the IPv4 Internet and the ISATAP IPv6 transition technology so that DirectAccess clients can access IPv6-capable resources across your IPv4-only intranet. Windows Vista, Windows Server 2008, and later operating systems supports ISATAP and enable these computers to start using IPv6 without requiring native IPv6 routing. Slide Transition: Now let’s look at DirectAccess in action.Slide Comment: To Send feedback on this slide, use the hyperlink on the feedback slide at the start and end of this deck.Additional Information: http://www.microsoft.com/downloads/thankyou.aspx?familyId=64966e88-1377-4d1a-be86-ab77014495f4&displayLang=en

    Slide Title: How BranchCache WorksKeywords: BranchCache,Branch,Networking,Remote OfficeKey Message: BranchCache has two modes, Distributed Cache mode and Hosted Cache mode.Slide Builds: 7Slide Script: In this example, there is one central office, and there are two branch offices. The main office is using Windows Server 2008 R2 file and Web servers with BranchCache enabled. Each of the two branch offices has Windows 7 clients with BranchCache enabled. BranchCache has two operating modes, Distributed Cache mode and Hosted Cache mode. At the branch office on the left, the client computers are configured to use Distributed Cache mode. Distributed Cache mode is an option for smaller branches without a local file server that can be used as a Hosted Cache server. That means that he cached content is distributed among client computers on the branch office network. No infrastructure (servers, and so on) or services are required in the branch office beyond client computers running Windows 7. This is how it works:[BUILD1] A Windows 7 client connects to the content server and requests a file (or part of a file), exactly as it would if it were to retrieve the file without using BranchCache. The content in the central office server authenticates and authorizes the client, and the server returns an identifier that the client uses to search for the file on the local network. Because this is the first time any client has attempted to retrieve the file, it is not already cached on the local network. Therefore, the client retrieves the file directly from the content server and caches it.

    [BUILD2] A second Windows 7 client requests the same file from the content server. The content server authenticates and authorizes the user in exactly the same manner it would if BranchCache were not being used. If successful, it returns content metadata over the same channel that data would normally have been sent. The metadata is the mechanism for reducing bandwidth, because the content metadata is significantly smaller than the actual content. It is important that the content server sends the content metadata to each client to ensure that the client always receives hashes for the most up-to-date content: This ensures that the most current data is always being accessed. The content is broken into blocks. For each block, a hash is computed (known as the “block hash”). A hash is also computed on a collection of blocks (known as the “segment hash”). Content metadata is primarily composed of block hashes and segment hashes. The hash algorithm that is used is SHA 256. The compression ratio achieved is approximately 2000:1; that is, the size of the metadata sent over the wire is ~2000 times smaller than the size of the original data itself. [BUILD3] The second client sends a request on the local network for the required file by using the Web Services Discovery (WS-Discovery) multicast protocol. The segment hashes provide a unit of discovery. This helps reduce the total number of lookups performed for a given content (compared to looking up every block). The client that previously cached the file sends the file to the requesting client. The data is encrypted by using a key that is derived from the hashes sent by the content server as part of the content metadata. The client decrypts the data, computes the hashes on the blocks received from the first client, and ensures that it is identical to the block hashes provided as part of the content metadata by the content server. This ensures that the content has not been modified.When a client needs to retrieve data from another client (or, as we’ll discuss in a moment, the Hosted Cache server), it downloads the content in units of blocks to ensure that the data can quickly return to the application. The minimum size of content that BranchCache caches is 64 KB. When content is less than 64 KB, data is directly retrieved from the content server by using the WAN.

    Note that the Distributed Cache mode works across a single subnet only. This differs from Hosted Cache mode, which works across multiple subnets. Also note that clients that hibernate or otherwise disconnect from the network are not able to provide content to requesting clients. At the branch office on the right of the slide, the clients are configured in Hosted Cache mode. This is recommended if there are more than 50 clients at the branch. The cached content is maintained on a computer running Windows Server 2008 R2 on the branch office network. Hosted Cache configuration works this way:[BUILD4] The Windows 7 client connects to the content server in the central office and requests a file (or part of a file) exactly as it would if it were to retrieve the file without using BranchCache. The content server authenticates and authorizes the client exactly as it would without using BranchCache. If successful, it returns content metadata over the same channel that data would normally have been sent. In Hosted Cache mode, the client uses the hashes in the metadata to search for the file in the Hosted Cache server. Because this is the first time any client has retrieved the file, it is not already cached on the local network. Therefore, the client retrieves the file directly from the content server. [BUILD5] Now—and this is a key difference in Hosted Cache mode—the client establishes an SSL connection with the Hosted Cache server, and it offers the content identifiers over this encrypted channel. The Hosted Cache server connects to the client and retrieves the set of blocks that it does not have cached. [BUILD6] Now a second Windows 7 client requests the same file from the content server. Again, the content server authorizes the user and returns content identifiers.

    [BUILD7] The client uses these identifiers to request the data from the Hosted Cache server. The Hosted Cache server encrypts the data and returns it to the client. (The data is encrypted by using a key that is derived from the hashes sent by the content server as part of the content metadata.) The client decrypts the data, computes the hashes on the blocks received from the Hosted Cache, and ensures that it is identical to the block hashes that the content server provided as part of the content metadata. This ensures that the content has not been modified. Slide Transition: Let’s look at the benefits of BranchCacheSlide Comment: To Send feedback on this slide, use the hyperlink on the feedback slide at the start and end of this deck.Additional Information: http://www.microsoft.com/downloads/details.aspx?FamilyID=a9a1ed8a-71ab-468e-a7e0-470fd46e46b3&DisplayLang=enhttp://www.microsoft.com/downloads/details.aspx?displaylang=en&FamilyID=ee07308f-7c53-4c76-9ed9-670bc25a4c9d#tm

    Slide Title: BranchCache BenefitsKeywords: BranchCache,Benefits,Networking,Remote OfficeKey Message: BranchCache makes remote network tasks faster and more responsive increasing user productivity and more securely optimizes network utilization .Slide Builds: 1Slide Script: BranchCache improves user productivity and reduces WAN link utilization in branch offices while supporting your existing security requirements.For branch-office users, BranchCache improves application responsiveness, reduces file transfer wait time, and, combined with other SMB offerings, enhances user experience on remote shares.[BUILD1] For IT professionals, BranchCache reduces WAN bandwidth consumed by end users for intranet-based HTTP and server message block, or SMB, traffic. It accelerates delivery of encrypted content using HTTPS and IPsec and requires content servers to authenticate all users before granting access to cached content. BranchCache doesn’t require additional equipment in the branch offices, and it can be easily managed using Group Policy.Slide Transition: Before we see a demonstration, let’s look at how our demonstration environment is configured for this session.Slide Comment: To Send feedback on this slide, use the hyperlink on the feedback slide at the start and end of this deck.Additional Information: http://technet.microsoft.com/en-us/network/dd425028.aspx

    Slide Title: Demonstration EnvironmentKeywords: Key Message: Describe the demonstration environment being used.Slide Builds: 0Slide Script: We will be working with a rather complex environment over the course of the demonstrations. All servers are running Windows Server 2008 R2, including a domain controller, a DirectAccess server, two Web servers, and two Windows 7 client computers.Slide Transition: Let’s move on to the first demonstration.Slide Comment: To Send feedback on this slide, use the hyperlink on the feedback slide at the start and end of this deck.Additional Information:

    Slide Title: TechNet Plus Direct SubscriptionKeywords: Technet, Subscription, Plus, Direct, BenefitsKey Message: TechNet Plus has some new benefits.Slide Builds: 0Slide Script: TechNet Plus is an essential premium web-enabled and live support resource that provides IT Professionals with fast and easy access to Microsoft experts, software and technical information, enhancing IT productivity, control and planning.With convenient access to all these resources in one online location, TechNet Plus provides what you need to help you:Evaluate products & learn new skillsPlan for & deploy new technologiesAnd support & maintain your IT environmentFor evaluation and learning you get access to all Microsoft full-version software for evaluation without time limits. This includes Microsoft Server, Client, and Application software titles. With full-version software, you can make informed decisions about new technologies at your own pace.You also receive access to the latest betas before public release. Be the first to try out the latest pre-release versions of Microsoft operating systems, servers and business applications.TechNet Plus also offers quarterly training resources including select Microsoft E-Learning courses for free so you can keep your skills current, prepare for a certification exam or get ready for a specific project.For planning and deployment the TechNet Library includes resources to help you plan for and deploy new technologies in your IT environment including a complete Knowledge Base, resource kits, utilities and technical training.You also get exclusive tools like System Center Capacity Planner to accurately plan for and deploy Exchange Server and System Center Operations Manager.For support and maintenance TechNet Plus comes with two complimentary Professional Support incidents. You can talk to a Microsoft Support Professional to quickly resolve your mission-critical technical issues fast.TechNet Plus also provides access to over 100 Managed Newsgroups. You can exchange ideas with other professionals and get expert answers to your technical questions within the next business day — guaranteed.You also get access to TechNet Library resources to help you support and maintain your IT environment including security updates and service packs.TechNet Plus offers proven value that far exceeds its cost. The two complimentary Professional Support incidents alone more than offset the cost of a TechNet Plus subscription. Add to that the evaluation and beta software and other technical resources, and TechNet Plus clearly boosts productivity. Every IT Professional on the team needs one.For more information or to purchase a TechNet Plus subscription, please visit: technet.microsoft.com/subscriptions.Slide Transition: Thank you for attending this TechNet event and we hope that you enjoyed learning about the new Microsoft Technologies.Slide Comment: To Send feedback on this slide, use the hyperlink on the feedback slide at the start and end of this deck.Additional Information: technet.microsoft.com/subscriptions

    Slide Title: FeedbackKeywords: Key Message: Slide Builds: 0Slide Script: .Slide Comment: To Send feedback on this slide, use the hyperlink on the feedback slide at the start and end of this deck.Additional Information:

    1 Favorite

    Microsoft Windows 7 Improved Network Access - Presentation Transcript

    1. CLI-306
      Welcome
    2. Do Not Delete This Slide
      We appreciate hearing from you. To send your feedback, click the following link, and type your comments in the message body.
      Note: The subject-line information is used to route your feedback. If you remove or modify the subject line, we may be unable to process your feedback.
      Send feedback
    3. Microsoft Windows 7 Improved Network Access
    4. What We Will Cover
      DirectAccess
      BranchCache™
      URL-Based Quality of Service
      Offline File Sharing
    5. Agenda
      Using BranchCache
      Introducing DirectAccess
      Configuring URL-Based Quality of Service
      Reviewing Offline File-Sharing Enhancements
    6. Evolving Networking Requirements
      BRANCH OFFICES
      MOBILE AND DISTRIBUTED WORKFORCE
      Mobile and Remote Workforce Needs:
      Work anywhere
      Fast access
      IT Professional Needs:
      Secure and flexible infrastructure for“work anywhere”
      Reduced costs
      REMOTE WORK
      CENTRAL OFFICE
      IDC Worldwide Quarterly PC Tracker, December 2008
      IDC, "Worldwide Mobile Worker Population 2007–2011 Forecast," Doc #209813, December 2007
    7. Windows 7 Networking Enhancements
    8. Windows 7 Networking Enhancements—Notes
    9. DirectAccess Overview
      Issues Today
      Difficult for users to access corporate resources from outside the office
      Challenging for IT to manage, update, and patch mobile computers while disconnected from company network
      Windows 7 Solution: DirectAccess
      DC/ DNS
      DirectAccess Server
      App Servers
      Bi-directional connection
      using IPsec and IPv6
      New paradigm enables same experience inside and outside the office
      Ubiquitous resource access increases productivity of mobile users
      Infrastructure makes it easier to service and update mobile computers
    10. DirectAccess Overview—Notes
      Issues Today
      Difficult for users to access corporate resources from outside the office
      Challenging for IT to manage, update, patch mobile computers while disconnected from company network
      Windows 7 Solution: Direct Access
      DC/ DNS
      Direct Access Server
      App Servers
      Bi-directional connection
      using IPSec and IPv6
      New paradigm enables same experience inside and outside the office
      Ubiquitous resource access increases productivity of mobile users
      Infrastructure makes it easier to service and update mobile computers
    11. DirectAccess Technical Details
      Direct connectivity to IPv6-based intranet resources
      IPv6 devices
      IPv4 devices
      Support IPv4 via 6to4 transition services or NAT-PT
      IT desktop management
      Native IPv6 with IPsec
      IPv6 transition services
      Active Directory® Group Policy, NAP, software updates
      Internet
      DirectAccess
      server
      • IPsec encryption and
      authentication
      • 2 Tunnels are established
      Supports variety of remote network protocols
      Windows 7 client
    12. DirectAccess Technical Details—Notes
      Direct connectivity to IPv6-based intranet resources
      IPv6 Devices
      IPv4 Devices
      Support IPv4 via 6to4 transition services or NAT-PT
      IT desktop management
      Native IPv6 with IPsec
      IPv6 Transition Services
      Active Directory Group Policy, NAP, software updates
      Internet
      DirectAccess
      Server
      • IPsec encryption and
      authentication
      • 2 Tunnels are established–
      DirectAccess Server acts as
      gateway
      Supports variety of remote network protocols
      Windows 7 Client
    13. Demo: Introducing DirectAccess
      • Configure DirectAccess Server
      • Connect Windows 7 Client Using DirectAccess
      • Manage a Windows 7 Remote Client Using DirectAccess
    14. Agenda
      Introducing DirectAccess
      Using BranchCache
      Configuring URL-Based Quality of Service
      Reviewing Offline File-Sharing Enhancements
    15. BranchCache Overview
      Issues Today
      Application and data access over WAN is slow in branch offices
      Slow connections hurt user productivity
      Improving network performance is expensive and difficult to implement
      Windows7 Solution: BranchCache
      Data Center
      Branch
      Cache’s content downloaded from file and Web servers
      Users in the branch can quickly open files stored in the cache
      Frees up network bandwidth for other uses
    16. BranchCache Overview—Notes
      Issues Today
      Application and data access over WAN is slow in branch offices
      Slow connections hurt user productivity
      Improving network performance is expensive and difficult to implement
      Windows7 Solution: BranchCache
      Data Center
      Branch
      Cache’s content downloaded from file and Web servers
      Users in the branch can quickly open files stored in the cache
      Frees up network bandwidth for other uses
    17. How BranchCache Works
      Central Office
      Windows Server 2008 R2 Web and File Servers
      Branch
      Branch
      Large branch
      Small branch with no local server
      GET
      ID
      ID
      GET
      ID
      ID
      1
      2
      3
      1
      2
      4
      3
      PUT
      GET
      GET
      Hosted Cache Mode
      Distributed Cache Mode
    18. How BranchCache Works—Notes
      Central Office
      Windows Server 2008 R2 Web and File Servers
      Branch
      Branch
      Large branch
      Small branch with no local server
      GET
      ID
      ID
      GET
      ID
      ID
      1
      2
      3
      1
      2
      4
      3
      PUT
      GET
      GET
      Hosted Cache Mode
      Distributed Cache Mode
    19. How BranchCache Works—Notes
      Central Office
      Windows Server 2008 R2 Web and File Servers
      Branch
      Branch
      Large branch
      Small branch with no local server
      GET
      ID
      ID
      GET
      ID
      ID
      1
      2
      3
      1
      2
      4
      3
      PUT
      GET
      GET
      Hosted Cache Mode
      Distributed Cache Mode
    20. How BranchCache Works—Notes
      Central Office
      Windows Server 2008 R2 Web and File Servers
      Branch
      Branch
      Large branch
      Small branch with no local server
      GET
      ID
      ID
      GET
      ID
      ID
      1
      2
      3
      1
      2
      4
      3
      PUT
      GET
      GET
      Hosted Cache Mode
      Distributed Cache Mode
    21. BranchCache Benefits
      For Users
      For IT Professionals
      Better User Experience
      Improves application responsiveness
      Reduces file transfer wait time
      Combined with other Server Message Block (SMB) offerings, enhances user experience on remote shares
      Secure, Optimized Network Utilization
      Reduces WAN bandwidth usage for intranet-based HTTP and SMB traffic
      Accelerates delivery of encrypted content
      Uses existing security technologies and requires authentication by content server
      Easily deployed and manageable by Group Policy
    22. Demonstration Environment
    23. Demo: Using BranchCache
      • Install and Configure Hosted BranchCache for Web Services
      • Test Hosted BranchCache Functionality from Client Computers
      • Install and Configure Distributed BranchCache for File Services
    24. Agenda
      Introducing DirectAccess
      Using BranchCache
      Configuring URL-Based Quality of Service
      Reviewing Offline File-Sharing Enhancements
    25. URL-Based Quality of Service Overview
      Branch Clients
      Requests for http://www.contoso.com
      Requests for http://*.contoso.com
      Requests for http://southridgevideo.com
      Requests for http://*.southridgevideo.com
      Without URL-Based QoS
      With URL-Based QoS
      Router
      Router treats packets the same way–first in, first out
      Branch Clients
      Internet
      Internet
      Router
      Router prioritizes critical traffic by URL, ensuring that those packets are sent first
    26. URL-Based Quality of Service Overview—Notes
      Branch Clients
      Requests for http://www.contoso.com
      Requests for http://*.contoso.com
      Requests for http://southridgevideo.com
      Requests for http://*.southridgevideo.com
      Without URL-Based QoS
      With URL-Based QoS
      Router
      Router treats packets the same way–first in, first out
      Branch Clients
      Internet
      Internet
      Router
      Router prioritizes critical traffic by URL, ensuring that those packets are sent first
    27. Demo: Configuring URL-Based Quality of Service
      • Download Files from Web Sites
      • Configure URL-Based Quality of Service
      • Download Files from Web Sites to Test URL-Based Quality of Service
    28. Agenda
      Introducing DirectAccess
      Using BranchCache
      Configuring URL-Based Quality of Service
      Reviewing Offline File-Sharing Enhancements
    29. Transparent Caching Improves Office Experience over WAN
      Issues Today
      Working with Microsoft Office applications over a WAN is slow
      Opening and saving files over the WAN and opening recent files
      Slowness hurts user productivity
      Windows 7 Solution: Transparent Caching
      Caches files locally and checks with server to verify files are up to date
      Changes are always written to the server
      Will provide a similar user experience for Office applications over WANs as that found on a LAN
      Optimizes network usage for remote workers and branch offices
    30. Background Sync Provides Better Offline Files Support
      Issues Today
      Folder redirection works with online and offline modes
      Not transparent to users who are on a high latency network with low throughput
      Windows 7 Solution: Full, Two-Way Background Sync
      Data Center
      Branch
      Synchronization transparent to the end user
      IT administrator can configure synchronization intervals
      Folder redirection becomes much more useful
      Corporate data remains in sync and network is optimized
    31. Background Sync Provides Better Offline Files Support—Notes
      Issues Today
      Folder redirection works with online and offline modes
      Not transparent to users who are on a high latency network with low throughput
      Windows 7 Solution: Full, 2-Way Background Sync
      Data Center
      Branch
      Synchronization transparent to the end user
      IT admin can configure synchronization intervals
      Folder Redirection becomes much more useful
      Corporate data remains in sync and network is optimized
    32. Demo: Reviewing Offline File- Sharing Enhancements
      • Configure Folder Redirection and Transparent Caching of Offline Files
      • Show Transparent Caching and Background Synchronization
    33. Session Summary
      BranchCache provides local access to files, improving productivity and optimizing network utilization
      DirectAccess imporves mobile user productivity and streamlines management of remote computers
      Network enhancements speed access to files and data, reduce delays, and optimize network utilization.
    34. Where to Find More Information?
      Visit TechNet at technet.microsoft.com
      Also check out TechNet Edge
      edge.technet.com
      Or just visit http://go.microsoft.com/?linkid=9662638
      for additional information on this session.
    35. For more titles, visit
      http://go.microsoft.com/?linkid=9662638
      Supporting Publications
    36. For more training information http://go.microsoft.com/?linkid=9662638
      Training Resources
    37. Become a Microsoft Certified Professional
      What are MCP certifications?
      Validation in performing critical IT functions.
      Why Certify?
      WW recognition of skills gained via experience.
      More effective deployments with reduced costs
      What Certifications are there for IT Pros?
      MCTS, MCITP.
      www.microsoft.com/certification
    38. Microsoft TechNet Plus
      TechNet Plus is an essential premium web-enabled and live support resource that provides IT Professionals with fast and easy access to Microsoft experts, software and technical information, enhancing IT productivity, control and planning.
      Evaluate & Learn
      Plan & Deploy
      Support & Maintain
      2 complimentaryProfessional Support incidents for use 24/7 (20% discount on additional incidents)
      Access over 100 managed newsgroups and get next business day response--guaranteed
      Use the TechNet Library to maintain your IT environment with security updates, service packs and utilities
      Use the TechNet Library to plan for deployment using the Knowledge Base, resource kits, and technical training
      Use exclusive tools like System Center Capacity Planner to accurately plan for and deploy Exchange Server and System Center Operations Manager
      Evaluate full versions of all Microsoft commercial software for evaluation—without time limits. This includes all client, server and Office applications.
      Try out all the latest betas before public release
      Keep your skills current with quarterly training resources including select Microsoft E-Learning courses
      Get all these resources and more with a TechNet Plus subscription.
      For more information visit: technet.microsoft.com/subscriptions
    39. Your potential. Our Passion
    40. Do Not Delete This Slide
      We appreciate hearing from you. To send your feedback, click the following link, and type your comments in the message body.
      Note: The subject-line information is used to route your feedback. If you remove or modify the subject line, we may be unable to process your feedback.
      Send feedback
    41. Session Credits
      Author: Aaron Clutter
      Editor:
      MS Producer: Alan Le Marquand
      Technical Specialists
      Peter Lammers
      Microsoft Reviewers
    SlideShare Zeitgeist 2009

    + Microsoft TechNetMicrosoft TechNet Nominate

    custom

    393 views, 1 favs, 0 embeds more stats

    This session will explore how Windows 7 networking more

    More info about this document

    © All Rights Reserved

    Go to text version

    • Total Views 393
      • 393 on SlideShare
      • 0 from embeds
    • Comments 0
    • Favorites 1
    • Downloads 15
    Most viewed embeds

    more

    All embeds

    less

    Flagged as inappropriate Flag as inappropriate
    Flag as inappropriate

    Select your reason for flagging this presentation as inappropriate. If needed, use the feedback form to let us know more details.

    Cancel
    File a copyright complaint
    Having problems? Go to our helpdesk?

    Categories

    Tags

    -->
    Search
    RSS Feed
    What's new?

    © 2009 SlideShare Inc. All Rights Reserved