Hi everyone i seem to have this pretty weird problem and i am not too sure why this
would happen. Here goes, the current network is dived in two parts with trusted
LAN and DMZ zone, then access to Internet through two different gateways or
routers. Now everything runs just fine until such time when one of the gateways dies,
then i start experiencing the following and this is only happening on machines in a
DMZ and main firewall separating two networks.

All machines in the DMZ are Linux or BSD and every time the default gateway is not
functioning i i seem to loose the ability to access any services on the machines using
non-functioning gateway. In other words, just to explain this further, if the server
with IP lets say 10.0.0.25 uses gateway 10.0.0.1(and this gateway then stops
functioning) and i access this internally from range 192.168.1.0 through the firewall
i have a problem ssh-ing or using pop3 or any other service even though the machine
responds perfectly fine to pings, obviously because i don't have to access Internet to
access my servers in the DMZ zone. There is no error it's just as if all the traffic
disappears somewhere. So i am wondering if anyone has experienced this.

Here is a little diagram of what the setup is. Look if am not too clear on this let me
know and i will give more information. Found nothing of this sort of thing on google.
I am looking into fail-over setup where machines can pick gateways automatically
but thats another topic all together. Thanks in advance.

LAN -----Firewall------DMZ---- twogateways-----internet