General :: How To Enable Inbound Traffic

1. It is definitely my system and not the router. I had been accepting these connections just fine on my Fedora 6 system, but upgraded to FC11 and haven't been able to get these inbound connections working. I still have the drive with the FC6 system and whenever I put the old drive in the system, the connections work fine. So, the hardware, wiring, etc is identical between the FC6 and FC11 systems.

2. The system's firewall is disabled. iptables, and ip6tables are turned off both at startup (e.g., chkconfig iptables off) and using "service iptables stop". (Note--my router also works as a firewall)

3. sshd and httpd are both on and listening on all interfaces. "nmap -P0 -p 22,80 127.0.0.1" shows both ports open, as does 192.168.1.80. But when I use the same command looping through the external IP, the ports are filtered:

Host is up.
PORT STATE SERVICE
22/tcp filtered ssh
80/tcp filtered http

4. hosts.deny is empty.

5. The messages and secure logs do not show anything in response to the nmap scans.

Again, I'd have sworn this was my router, except that it cleanly allows the traffic when I swap the drives in my system.