I'm having trouble with a fedora install, that won't respond to network traffic if its port forwarded.
I have a small webserver running behind a netgear firewall router. The netgear firewall router forwards all of its public ip traffic if its http or ssh to the internal server. The server currently is running OSX howerever, I have a new box running Fedora Core 6 to replace it.
The new Fedora Box will not respond to the port forwarded traffic. If I connect to it internally (using the 192.168.0.100 address) it works fine. I can ssh to it as well as get web pages that its serving. However If I try to access it from the internet I get no response, either via ssh or web requests. I'm pretty sure its not a problem with the router, as I can access the old server (running OSX) just fine, but when I switch the traffic to forward to the Fedora Box instead of the OSX server, everything stops working. Further, if I run TCPdump on the fedora box, i actually see the packet requests coming from the internet clients, but I see no responses from the fedora system. Its almost like it ignores the traffic as if it were running a firewall, however I've double checked and IPtables is not running at all.
I'm at a loss to figure out why the fedora box seemingly ignores the requests coming from the router, but responds to them, if they are local. Oh and one other piece of troubleshooting info is that the fedora box can access the internet just fine. Okay if anyone has any sugessions, I would greatly greatly appreciate it!!!!!!!