linux poison RSS
linux poison Email

Block messengers through Iptables

msn messenger user port 1863
yahoo messenger uses 5000,5010 and 5050

To block AOL IM and ICQ:

# iptables -A FORWARD –dport 5190 -j DROP
# iptables -A FORWARD -d -j DROP

To block MSN messenger:

# iptables -A FORWARD -p TCP –dport 1863 -j DROP
# iptables -A FORWARD -d -j DROP

To block Yahoo messenger:

# iptables -A FORWARD -p TCP –dport 5000:5010 -j REJECT
# iptables -A FORWARD -d -j REJECT
# iptables -A FORWARD -b -j REJECT

Note that this will only block clients on the computer itself. If you are using the computer as a router with NAT, you will want to use “-t nat -A PREROUTING” instead.


Anonymous said...

To block Ocial Networks & IM's, see:

Yogesh said...

I want to block gtalk and https for gmail to disable chat . am using squid in transparent mode

Michael_c said...

Take a look here - it works great and you cand block anything you want, not just yahoo messenger:

Post a Comment

Related Posts with Thumbnails