My server (Free 2007) is behind a firewall so I do not need any firewall protection on the LAN. The problem is that I cannot seem to find a way to completely turn off firewall. I used the 'shorewall clear' command and the output from 'iptables -nL' is:

Chain INPUT (policy ACCEPT)
target prot opt source destination

Chain FORWARD (policy ACCEPT)
target prot opt source destination

Chain OUTPUT (policy ACCEPT)
target prot opt source destination

I believe that means it is off but yet I cannot connect to any port on the server from any LAN machine. However, all outgoing connections work. Although I can connect to 'webmin' and my web server using 'localhost' I cannot open any other ports (ping, ssh, etc.). I have to believe this is a firewall issue but I'm stuck. Can someone suggest a course of action? TIA.

as per the output of 'iptables -nL' firewall seems to be off.
It is difficult to figure out exact cause for this issue.

1) The IP's could be block in kernel routing table. Try route -n on your server / local machine.

2) Is there any firewall on router of your LAN ?
The firewall on your Server, Servers gateway, your local machine and gateway of your local machine can cause this probelm.
So you have to check all these.

Thanks for the reply. Everything looks correct. However, on the way to doing other things I rebooted the server for the umpteenth time and that somehow magically cured the problem. I have no explanation as I changed nothing with respect to networking or firewall. I simply installed a torrent client.