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Date:      Sat, 7 Apr 2001 00:21:29 -0400
From:      "Dan Langille" <dan@langille.org>
To:        Matt Haught <haught12@marshall.edu>
Cc:        "stable@freebsd.org" <stable@FreeBSD.ORG>
Subject:   Re: IP Filter 3.4.17?
Message-ID:  <200104070421.f374Lge45348@ns1.unixathome.org>
In-Reply-To: <01K22ZNJBR3K8Y5DVZ@marshall.edu>

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This is the second time this has been asked today.  Are we asking in 
the right place?

On 6 Apr 2001, at 14:38, Matt Haught wrote:

> Is it too late to update ipfilter in -STABLE?  3.4.16 seems to have a
> serious bug.  Darren just sent out this to the ipfilter mailling list:
> 
> -----snip----
> A *VERY* serious bug has been brought to my attention in IPFilter.
> 
> In 10 words or less, fragment caching with can let through "any"
> packet.
> Ok, so that's 8.
> 
> Cause
> =====
> When matching a fragment, only srcip, dstip and IP ID# are checked and
> the fragment cache is checked *before* any rules are checked.  It does
> not even need to be a fragment.  Even if you block all fragments with
> a rule, fragment cache entries can be created by packets that match
> state information currently held.
> ------snip----
> 
> -Matt
> 
> To Unsubscribe: send mail to majordomo@FreeBSD.org
> with "unsubscribe freebsd-stable" in the body of the message
> 



-- 
Dan Langille
pgpkey - finger dan@unixathome.org | http://unixathome.org/finger.php
got any work?  I'm looking for some.

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