I am dealing with a weird issue on 2 of my servers at the data center. Every once in a while I cannot connect to them (Ping, remote desktop etc) If I remote into one of my working servers I CAN ping/connect to them. The issue only happens to users using the Cisco VPN to connect to the data center.
To fix I remote into a working server and from there I remote into the non-working server and run a "ipconfig /registerdns" command. Does anyone else ever have this issue and if so, what did you do to permanently fix it?
Firewall is a Cisco ASA 5520
Machines are 2 Dell blade servers running Server 2003 r2
When you are unable to connect, are you trying to connect using the name or the ip address? Do the servers have static IP addresses?
Makes me wonder what the "ipconfig /registerdns" is really accomplishing. Have you tried running a capture on the inside interface of the ASA when you are experiencing the issue? This would tell you if the traffic is going across the VPN and being forwarded on to the servers and rather or not the servers are responding.