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Date:      Fri, 18 May 2007 09:50:58 +1000
From:      Mark Andrews <Mark_Andrews@isc.org>
Cc:        freebsd-net@freebsd.org, Hugo Koji Kobayashi <koji@registro.br>, freebsd-stable@freebsd.org
Subject:   Re: udp fragmentation with pf/ipf 
Message-ID:  <200705172350.l4HNowGe089722@drugs.dv.isc.org>
In-Reply-To: Your message of "Fri, 18 May 2007 09:47:56 %2B1000."

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> 
> 	This should be rejected as "keep frags" is meaningless here.
> 
> pass out log quick on bge0 proto udp from xxx.xxx.xxx.113/32 to any port = 53
>  keep state keep frags
> 
> 	You need
> 	
> 	pass in quick from any to any with frag keep frag

	The reason is that "ip" fragments not have next level headers. 
  
> -- 
> Mark Andrews, ISC
> 1 Seymour St., Dundas Valley, NSW 2117, Australia
> PHONE: +61 2 9871 4742                 INTERNET: Mark_Andrews@isc.org
-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: Mark_Andrews@isc.org



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