netdev - Re: Passive OS fingerprint xtables match (iptables part)

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Message-ID: <20090213124829.GA23879@ioremap.net>
Date:	Fri, 13 Feb 2009 15:48:29 +0300
From:	Evgeniy Polyakov <zbr@...emap.net>
To:	Jan Engelhardt <jengelh@...ozas.de>
Cc:	Patrick McHardy <kaber@...sh.net>, netdev@...r.kernel.org,
	David Miller <davem@...emloft.net>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Netfilter Development Mailinglist 
	<netfilter-devel@...r.kernel.org>
Subject: Re: Passive OS fingerprint xtables match (iptables part)

On Thu, Feb 12, 2009 at 09:19:18PM +0100, Jan Engelhardt (jengelh@...ozas.de) wrote:
> >> Make use of xtables_strtoui to do bounds checking on the TTL value.
> >
> >Hmm...
> >$ grep xtables_strtoui -r /tmp/iptables-1.4.2
> >$
> 
> It is going to be in 1.4.3, after whose release is the earliest point
> ipt_osf (or xt_osf :) will probably find its way into the mainlines.
> In 1.4.2, it is still called strtonum.

But it can be built with older (and already running) installation, with
xtables_strtoui() this will not be allowed.

-- 
	Evgeniy Polyakov
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