Cant open port

masatheesh · 12-19-2008, 01:36 AM

Hi,

I am using Oracle Enterprise Linux 5.0.Here if I open the port number 2372 by using iptables, it will not open.I am checking this port status by using the command " telnet 192.168.0.1 2372". I get the message as following

telnet: connect to address 192.168.0.1: Connection refused
telnet: Unable to connect to remote host: Connection refused

Is this procedure correct to get the port status? Can anybody please guide me to open this port?

repo · 12-19-2008, 04:46 AM

which rule did you used to open the port?
which service are you running behind the port?

telnet is ok to check the port

Mr. ameya sathe · 12-19-2008, 04:50 AM

Run this command & put here the output of the command

netstat -tanp | grep 2372

win32sux · 12-19-2008, 09:56 PM

Just to clarify a bit as to the feedback you've received: For a port to be open, something needs to be listening on it. Making a rule allowing packets into a certain port won't open the port - it will still be closed until something actually listens on it. The netstat command you've been given would show us if anything is actually listening on port 2372, which I suspect isn't the case.

masatheesh · 12-20-2008, 05:58 AM

Thanks for your replies

I have added following line in iptables

-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 2372 -j ACCEPT

I am not running any service behind this port

No response for following command
netstat -tanp | grep 2372

repo · 12-20-2008, 06:32 AM

Quote:

I am not running any service behind this port

As told in previous posts, you need to run a service behind the port.
ex. behind port 22 runs ssh deamon.