If I have the following lines in my IPtables file (/etc/sysconfig/iptables)
Does that imply that I wish to have port 25 open? Or should I input the following line as well?
I am only asking because due to the holidays I cannot get to a machine that can ssh in and test this out. (Also the above lines are only and example, not a real config. I too noticed that 22 would be closed if I really used the above config).

Thanks in advance.

It would depend on the default target of your RH-Firewall-1-INPUT chain (-P policy...). If the default target is DROP, then you need to explicitly allow connections to port 25. btw if you just want to allow all mail to 25 you can ditch the "-m state --state NEW -m tcp".

-m tcp isn't a valid rule anyway....

those lines (the first two) are rejecting packets not accepting. the third line is correct aside from -m tcp.

~predatorfreak

Hi All,

I wish someone could help me with this iptables problem. I have a proxy server and it works great, however, I've noticed that video streaming is able to pass thru port 80 of my firewall (/etc/sysconfig/iptables).

Question, how can i block/disable it since Im not using any port other than 80. I'm not using squid and not running webserver in my network. I plainly used MASQUERADING. I tried the -j REDIRECT but it failed coz i dont have a webserver. I also tried changing httpd tcp/udp in /etc/services but it didn't work.

I plan to use port 8080 since video streaming uses 80 and not sure it will work this time. But my problem now is how can I change the default port of httpd

Any suggestions?? pleassee i ran out of ideas...below is my config

thanks

-A POSTROUTING -s 192.168.0.0/255.255.0.0 -o eth0 -j MASQUERADE

-A FORWARD -i eth1 -o eth0 -p tcp -m tcp --dport 80 -j ACCEPT