We have a Windows 2003 server with 2 nics. One is connected to an internal network (192.168.1.x), the other to a dmz (192.168.10.x).
Both networks are served by the same cisco router connected externally to a T1.
From time to time, the server cannot be accessed from the DMZ, and we have to restart that NIC (only the NIC) to reestablish contact with the outside world.
The weird thing is that when the DMZ connection fails, the NIC is still active on the 192.168.10.x net. I can get to it from another machine on that same net, so it is the router that is not passing the packets, not a NIC failure.
This happened with both our current CISCO router and our previous SONICWALL router.
Any thoughts on what may cause this would be greatly appreciated.
-- Bob Flanders