Because of the different components and processes involved, troubleshooting site-to-site VPN connections can be a difficult task. This section describes the tools that are provided with Windows Server 2008 to troubleshoot site-to-site VPN connections and the most common problems with site-to-site VPN connections.

Troubleshooting Tools

Microsoft provides the following tools to troubleshoot VPN connections from the VPN router:

  • TCP/IP troubleshooting tools

  • Authentication and accounting logging

  • Event logging

  • NPS event logging

  • PPP logging

  • Tracing

  • Network Monitor 3.1

For information about these tools, see Chapter 12.

For site-to-site VPN connections, you can also use the unreachability reason facility. When a demand-dial interface fails to make ...

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