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  • Blog Post: Why You Need an External ISATAP Router for a Multi-Site UAG DirectAccess Deployment

    Someone asked a good question the other day regarding our design for a multi-site UAG DirectAccess deployments. If you haven’t seen the high level descriptions on what is required for a multi-site UAG DirectAccess design, then first check out the following blog posts: http://blogs.technet...
  • Blog Post: Solving the Mystery of the Dead Teredo Interface

    You’ve deployed DirectAccess on your network as a pilot project for your IT group over the holidays and everything is working great. When the users are behind a wide open NAT device, they use Teredo to connect to the UAG DirectAccess server. When they’re behind a port-restricted firewall or web proxy...
  • Blog Post: UAG DirectAccess–Guess the Device in the Request/Response Path

    Take a look at the figures below and see if you can guess what device is in the request/response path that you don’t typically see a UAG DirectAccess deployment. First, the ipconfig output on a DirectAccess client located behind a NAT device: Figure 1 Now let’s ping DC1: Figure 2 Now let’s do a tracert...
  • Blog Post: Is ISATAP Required for UAG DirectAccess?

    The answer is “no” – but its important to understand the function of ISATAP and why or why not you might consider deploying ISATAP in your environment. Why ISATAP? ISATAP is the Intra-site Automatic Tunnel Addressing Protocol. The purpose of ISATAP is to allow you to use IPv6 aware applications on a...
  • Blog Post: Clearing the Air on ISATAP

    For companies thinking about deploying DirectAccess, the question of whether or not you need to deploy ISATAP will invariably come up. The answer to this question is “no” and the reasons for why you don’t need ISATAP in a DirectAccess deployment are covered in my article over at http://blogs.technet...
  • Blog Post: Considerations When Using Ping to Troubleshoot DirectAccess Connectivity Issues

    You’re learning about DirectAccess and you like what you see. The next step is to build out a test lab. You can build out your own, or you can let me to the heavy lifting for you and use the UAG DirectAccess Step by Step Guide over at http://technet.microsoft.com/en-us/library/ee861167.aspx You’ll save...