From mboxrd@z Thu Jan  1 00:00:00 1970
From: =?UTF-8?B?SsO2cmcgSGFybXV0aA==?= <harmuth@mnemon.de>
Subject: Re: iptables & ebtables
Date: Fri, 14 Oct 2005 15:53:32 +0200
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bend chen wrote:
> HI,netfilter-user
>=20
>=20
> I  have some question=EF=BC=8Cpleas help me.
> 1\if I used ebtables process a package,but need iptables can't process =
THIS package,how can I do?

Sorry, I can't parse this sentence

> 2\can i use iptables drop some LENGTH package, can I mach : if the pack=
age > 128K then DROP?

Yes. Use the length match, e.g.

iptables -A INPUT -p tcp -m length --length --length 1501: -j DROP

will send all tcp-packets with more than 1500 bytes to nirvana. BTW,=20
neither tcp (1500 bytes max) nor udp (65 KBytes max) will ever generate=20
packets of the size you mentioned above. ICMP packets are even smaller -=20
i don't recall max size at the moment.

HTH,

Joerg