Re: Rule to limit outbound packets?

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On Fri, March 10, 2006 05:39, Eduardo Fernández wrote:
> Hi!
>
> I admin a linux router at a uni dorm, the internet link is adsl (low
> upstream bw) so I to write a rule that limits (mostly outbound) p2p
> traffic. I'm trying something like this:
>
> iptables -A FORWARD -m limit --limit 200/s --limit-burst 200 -p tcp
> --syn --dport 4662 -j ACCEPT
> iptables -A FORWARD -p tcp --syn --dport 4662 -j REJECT
>
> or
>
> iptables -A FORWARD -o $IFOUT -m limit --limit 100/s --limit-burst
> 1000 -p tcp --syn --dport 4662 -j ACCEPT
> iptables -A FORWARD -o $IFOUT -p tcp --syn --dport 4662 -j REJECT
>
> but it doesn't seem to work. I can't use hashlimit because I only can
> use 2.4 (any patch to use hashlimit in 2.4?).

Perhaps you'd better use the p2p patch because it's easy to circumvent --dport
4662.

http://www.netfilter.org/projects/patch-o-matic/pom-extra.html#pom-extra-ipp2p


Gr,
Rob





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