On Sat, Oct 05, 2002 at 05:00:31AM -0400, Krishna wrote: > But why do you want to do that? If you want to block a particular > port then either disable it in inetd or xinetd. Or make rules > for that destination port to DROP packets. As the OP stated, the Linux box is being used as a gateway. The Yahoo Messenger servers are out on the Net, so you'll need to block traffic going through the host, so inetd and xinetd won't help. > > Sorry for asking this newbie question first. > > > > I am running a network with a Linux Server as a gateway. I am using > > IPtables as to masquerade internal IPs for Internet usage. I want to > > block the uses of my intranet for using yahoo messenger. I needed help > > for this. In general i wanted to know how to block a particular port. It's not a newbie question at all, and sounds very familiar. Have you Googled for it throughly? IIRC Yahoo Messenger tries some interesting ways to get through firewalls - so you might want to filter on destination IP, or do some kind of content matching fun. I would expect a lot of people are up against similar problems so someone will have found a solution already if there's one to be found. -- FunkyJesus System Administration Team
