Hi,We have been troubleshooting this issue for nearly two years now but I have never thought to use Technet to help us out.Ill explain the architecture then detail the issue.Remote sites connect over hardware VPN. We were using Zyxel's and Zywall's and we are now using Cisco kit. We have some monitoring in place to show various information including VPN tunnels. We have a dedicated 10MB connection coming into head office in which we have 20 remote sites and no more than 50 users connecting. Now we are using Server 2008 which keeps the users connection open now. The issue is...users experience a slow down then a disconnection. This occurs several times a day. The VPN tunnels appear to stay connected. Even pings carry on being successful. Remote routers are locked down, anti-virus is up to date and does not update or scan automatically. We have checked server performance and this seems to be fine on all the TS servers.We perhaps need a better way of monitoring what is going on in the tunnels themselves. Any body know of any monitoring tools? could this be a bottleneck or too many packets flooding the routers. We have checked router logs before and nothing untoward seems to be happening. We have some bandwidth monitoring and we are not hitting anywhere near 10MB. I know this isnt directly a TS issue but wondered if anyone else has had similar issues?We used to use Jetro Cockpit for a while and our error message used to beconnection to terminal server is lost due to the following reason: socket closed. TS GURU wannabe

hi there,this forum is responsible for windows 2008 specific queries, as your issue is pertained to networking i would suggest you to post under http://social.technet.microsoft.com/windowsservernavigate to Platform networking ornetwork infrastructure servers.=================================If you have configured L2tp with VPN you can capture the oakley logging to understand the data communication. secondly please make sure that where the resets are happenings , take a netmon /ethereal trace between client and vpn server and vpn server to router and check the communication and check where the packets are dropping which will be the first place to begin. This might happening because of the firmware on the router , plese do configure the appropriate router logs and check the behavior .If you want to check the packets from client, please use perfmon on the client with appropriate counters set for networking also the below article explains basic vpn troubleshootinghttp://technet.microsoft.com/en-us/library/cc737767.aspxsainath Windows Driver Development

Actually we changed two things. One was port speeds on all devices including the switches and changed to cisco asa's throughout. This solved all our connectivity problems.TS GURU