Re: Blocking IMs

[Alejandro Flores <alejandro.flores@triforsec.com.br>]

	Ops,
	There's a typo in the MSN port. 
	MSN port is 1863.
iptables -I FORWARD -o ppp0 -s IpOfClient -p tcp --dport 1863 -j REJECT

Regards,
Alejandro


> Hi,
> 
> If you are running a route/firewall then you have to do things in
> FORWARD that is...
> 
> ## Droping all yahoo related ports voice, messaging, gaming
> iptables -I FORWARD -o ppp0 -s IpOfClient -p tcp -m multiport --dport
> 5000,5001,5100,5050,11999 -j DROP
> 
> # Replace -o ppp0 with your out interface, if you have different then ppp0 
>   for example -o eth0
> 
> ##Droping MSN packets
> iptables -I FORWARD -o ppp0 -s IpOfClient -p tcp --dport 1836
> 
> However if you are doing some transparent proxing, for example if you
> are running squid on the same machine that is the firewall/router
> machine then replace FORWARD with OUTPUT
> 
> iptables -I OUTPUT -o ppp0 -s IpOfClient -p tcp -m multiport --dport
> 5000,5001,5100,5050,11999 -j DROP
> 
> ##Droping MSN packets
> iptables -I OUTPUT -o ppp0 -s IpOfClient -p tcp --dport 1836
> 
> Regards
> Askar
> 
> On Thu, 5 Aug 2004 07:07:38 +0100 (BST), Sameer Gurung
> <sameersworld@yahoo.co.in> wrote:
> > IS there a way i can block yahoo chat and instant
> > messenger and msn from only specific clients from the
> > network..... the clients get their ip address from a
> > dhcp server....
> > Any help would be appreciated
> > 
> > =====
> > 
> > 
> > ________________________________________________________________________
> > Yahoo! India Matrimony: Find your life partner online
> > Go to: http://yahoo.shaadi.com/india-matrimony
> > 
> >
>