I have a PIX 515 model . Over that i have setup a DMZ where the clients from the DMZ interface telnet to a server inside the PIX. I have complains from the users that connections gets disconnected even when they keep the systems idle for a 10 minutes or in cases even for a minute. They say that the connections freeze just like that.
When i keep both the client and the server in the same subnet meaning bypassing the PIX i never have this problem. This clearly shows that the issue is with the PIX. I dont know what is the reason since i left the time out values to the standards ,
if the server sends the disconnect signal then the same thing should have happened when i keep the server and client in the same LAN.
I have the same issue with another PIX where the one connection running over port 1523 TCP gets disconnected. the connection is setup from the inside network to the DMZ network over the PIX
I checked with the other company who also use the same server . They also have the issue and they fixed that by changing the timeout value to 8 hours for that port alone.
In PIX i dont think we cant do that.
How to fix these issues.