Block yahoo messenger

space_beyond · 05-23-2005, 01:55 AM

I'm new in Linux (version9). Want to know how to block yahoo messenger and other chat web site. Need help.

born4linux · 05-23-2005, 03:04 AM

you can try setting up a squid proxy server. from there, you can do content filtering using dansguardian [1] and control which sites you want to be accessed from your network. try searching LQ or google.com/linux for "content filtering" and "squid proxy howto".

[1] dansguardian.org

or if you're a little paranoid, use iptables to allow only the traffic that you want to pass thru your gateway. try this link:

http://yolinux.com/TUTORIALS/LinuxTu...rkGateway.html

JrLz · 05-23-2005, 05:11 AM

you can try firestarter..........

Code:

www.fs-security.com

TruckStuff · 05-23-2005, 09:50 AM

Y! Messenger uses tcp port 5050. Block it at your firewall and you're good to go.

BTW, there is no version 9 f Linux. If you are running Red Hat 9, upgrade. Now.

space_beyond · 05-23-2005, 08:37 PM

Thanks for the answers.

chrisfirestar · 05-23-2005, 08:53 PM

just using squid or just using firewall will not block as you need.

you must use the firewall to block all ports going out except port 80 and port 3128 (squid)
then you auto forward all requests on port 80 to 3128 to be filtered by your squid.

then u setup your squid and filter by IP's and domains

easy...

I wrote a website howto:
http://www.orbitdesigns.net/freestuff/strongfw/

should guide you through quite easily all the steps you need.

Thanks
Chris