[CentOS] DROP MSN MESSENGER by IPTABLES- CENTOS 4

Charles Lacroix clacroix at cegep-ste-foy.qc.ca
Fri Nov 3 14:57:21 UTC 2006


Humm, won't msn fall back to http protocol? 


On Friday 03 November 2006 09:43, Rafael Azenha Aquini wrote:
> It's more simple deny the messenger's port. try the follow rule:
>
> /sbin/iptables -t filter -A FORWARD -p tcp --dport 1863:1864 -j DROP
>
> by this way, the client is disabled for auth process in MSN servers, and
> you can say bye-bye to this cancer... :-)
>
> []
>
> On Fri, 2006-11-03 at 09:35 -0400, Charles Lacroix wrote:
> > won't that iptables command block some legit traffic ? like a google
> > search or something ?
> >
> > I remember blocking msn messenger with iptables and squid proxy, it was
> > reliable but kinda heavy if you want to run only a firewall.
> >
> > Recompiling a kernel once is alright but if you have to do it on every
> > update it can get time consuming :)
> >
> > anyways good luck.
> >
> > On Friday 03 November 2006 06:37, Adriano Frare wrote:
> > > Dear Friends,
> > >
> > > I installed CENTOS 4.4 on server.
> > >
> > > I need DROP MSN Messenger using IPTABLES,  I created the rule below.
> > >
> > > $IPTABLES -A INPUT -p tcp -m string --string "x-msn-messenger" -j DROP
> > >
> > >
> > >
> > > But, When I run IPTABLES, I have received follow error:
> > >
> > > DROP -> MSN Messenger
> > > iptables v1.2.11: Couldn't load match
> > > `string':/lib/iptables/libipt_string.so: cannot open shared object
> > > file: No such file or directory
> > >
> > >
> > > Where DO I find library libipt_string ?
> > >
> > >
> > >
> > > Thanks for help.
> > >
> > >
> > > Adriano Frare
> > > _______________________________________________
> > > CentOS mailing list
> > > CentOS at centos.org
> > > http://lists.centos.org/mailman/listinfo/centos
>
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-- 
Charles Lacroix, Administrateur UNIX.
Service des télécommunications et des technologies
Cégep de Sainte-Foy
(418) 659-6600 # 4266



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