security newbie...turning off a specific network port

jys88 · 12-13-2005, 04:15 PM

Hello,
I'm trying to turn off a specific network port (port7000). I've tried to find the application that runs it, using lsof, but I don't see anything associated with it. Is there a different way to find out how to turn it off, or a specfic way to turn off the port itself?

jakev383 · 12-13-2005, 09:13 PM

Quote:

Originally Posted by jys88

Hello,
I'm trying to turn off a specific network port (port7000). I've tried to find the application that runs it, using lsof, but I don't see anything associated with it. Is there a different way to find out how to turn it off, or a specfic way to turn off the port itself?

Should really see what you're already running for a firewall (iptables-save >> firewall.txt), but try this at the command line - it may work or it may not:

Code:

/sbin/iptables -A INPUT -i eth1 -p tcp --dport 7000 -j DROP

with eth1 being whatever your public interface is. (probably eth0)

tkedwards · 12-14-2005, 04:22 PM

The way to find out what process is listening on that port is

Code:

netstat -nlp | grep 7000

this has to be run as root