I have two servers, and, that were connected across a LAN. They are the components of a DMZ where is the wen server and the application server. is running Ubuntu 11.04 while is running Ubuntu 11.10. I had to restart because Unity froze up. (I have since replaced it with Gnome.) Ever since I started it up again, I cannot get connectivity with When I try

I get

PING ( 56(84) bytes of data.

That is, it just hangs. I get the same result if I try



I had been saving my iptables in iptables.save but now I see that that fie is of zero size for some reason although I had a lot of rules in the IPtable. I tried to fix the problem with

sudo iptables -A OUTPUT -s -j ACCEPT
sudo iptables -A OUTPUT -d -j ACCEPT
sudo iptables -A INPUT -s -j ACCEPT
sudo iptables -A INPUT -d -j ACCEPT

but it has no effect.

Any assistance would be most appreciated,