As root look at /var/log/syslog /var/log/messages they may give you
a clue to the problem.
You can check to see if iptables is running. Open a console, and type:
ps -e | grep iptables
You can look at your iptables rules by using a console and log in as root then type:
iptables -L
HTH
Bigpaws
Thanks, BP.
Searching the output of /var/log/syslog and /var/log/messages for the strings 'firewall', 'fire' & 'iptables' drew a blank.
Typing ps -e | grep iptables produced no output.
Typing iptables -L gave the following output, which looks like a blank template:
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