UGN Security Forums UGN Security: Knowledge Base Operating Systems *nix & *nix Security Manually opening up a port in redhat

I can't figure this crap out. I was reading about the Iptable thing but it confused the [censored] outta me. Is there an easy way to open up a port or two in redhat (8.0)? Or a link that explains how to.

thanks

--matt

i tried this rule

iptables -A INPUT --destination-port xxxx -i ppp0 -j accept

the xxxx is the port number but I get "unknown arg '--destination-port'

I haven't used iptables in a while, but I believe you have to speicfy a protocol option. So it would look something like this:

iptables -A INPUT -p tcp --destination-port telnet -i ppp0 -j ACCEPT

You might want to check this link out, it doesn't really go in depth but it clarifies a lot of things, at least for me it does.


Click Here!

EDIT: This won't actually "open" a port, but rather allow connections to the port you specify. You first have to enable the service you want people to connect to.

hmmm I'll give that a try. Basically i need to open up port 2300 and some other one (both are udp) so i can play a damn game online with a friend. Will allowing connection to the port fix this? or does it have to be "open"

Here, check this google search I did:

Click Here

There's load of info, lots of premade firewall scripts and what not. They'll probably help you better than I can...hehe

cool thanks!!! I'll give them a shot later tonight when i get home

thanks again

--matt