From: Jasbir Khehra <jasbir.k@gmail.com>
To: lubasi <lubasi@zamnet.zm>
Cc: netfilter@lists.netfilter.org
Subject: Re: REF: Blocking Yahoo
Date: Fri, 03 Nov 2006 19:47:22 +0530 [thread overview]
Message-ID: <454B4F72.4000800@gmail.com> (raw)
In-Reply-To: <380-22006115365443640@zamnet.zm>
lubasi wrote:
>Dear All,
>
>I'm new to this list and netfilter as a whole.
>
>I have setup rules on my iptables and when i block yahoo, only those
>using gaim IM client using yahoo are blocked but the native yahoo IM
>client is passing through my firewall. Whats wrong with my chains
>below. Thank you in advance.
>
>My chains
>
>
>#Block Yahoo Messnger
>/sbin/iptables -I FORWARD -s MYNETWORK/24 -d 216.155.193.0/22 -j DROP
>
>
>
Yahoo IM protocol can tunnel through port 80 , I believe Gaim also has
this feature( tweak the network settings ).
IMO best bet to block yahoo using netfilter is
l7-filter.sourceforge.net, but this requires a kernel+iptables patch.
HTH,
Jasbir
next prev parent reply other threads:[~2006-11-03 14:17 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-11-03 6:54 REF: Blocking Yahoo lubasi
2006-11-03 9:23 ` Steffen Heil
2006-11-03 14:17 ` Jasbir Khehra [this message]
2006-11-03 15:50 ` REF: " Mr. Ritter
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