open special ports

pegan · 02-10-2005, 10:49 AM

I am new at fedora, but am trying hard to learn.

I need to add several ports.
I did the iptables:
"iptables -A INPUT -p tcp -s 192.168.3/24 -i eth0 --dport 8181 -j ACCEPT"
then I did:
"service iptables save" (got an OK message)
When I go to do "nmap -sTU 192.168.3.200" the port does not show up as open.

Where did I go wrong?
Paul

skunkburner · 02-10-2005, 11:33 AM

Is the service listening on port 8181 running? 'cos the port won't show as open until it is.
Another way is to cheat, download webmin (www.webmin.com) and use the Firewall gui to setup iptables.

*Edit*
I have just thought of another way in Fedora,
run 'setup'
choose 'firewall configuration' then 'Custom'
you would add 8181 to the 'other ports' list

pegan · 02-10-2005, 01:36 PM

that would be good if I had that option. I need to do it by code.

skunkburner · 02-10-2005, 01:45 PM

OK I typed the command line you specified and webmin shows the following entry: -

Accept if protocol is TCP and source is 192.168.0.0/255.255.255.0 and input interface is eth0 and destination port is 8181
^
Lookey here!!

try

"iptables -A INPUT -p tcp -s 192.168.3.0/24 -i eth0 --dport 8181 -j ACCEPT"
^
try adding an extra '.0' to complete the ip address

edit* Bugger it is removing my spaces : (
you are lookey here'ing at the -s 192.168.0.0
I assume you are adding the Class C net 192.168.3.0 rather than the C 192.168.0.0

pegan · 02-14-2005, 01:40 PM

tank you I will try that