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From: Pablo Neira Ayuso <pablo@netfilter.org>
To: Phil Sutter <phil@nwl.cc>
Cc: netfilter-devel@vger.kernel.org
Subject: Re: [iptables PATCH] tcp_xlate: Enclose LH flag values in parentheses
Date: Tue, 29 Nov 2016 23:02:14 +0100	[thread overview]
Message-ID: <20161129220214.GA31994@salvia> (raw)
In-Reply-To: <20161129114725.12735-1-phil@nwl.cc>

On Tue, Nov 29, 2016 at 12:47:25PM +0100, Phil Sutter wrote:
> This fixes TCP flags matches:
> 
> | $ iptables-translate -A invalid -p tcp --tcp-flags SYN,FIN SYN,FIN -j DROP
> | nft add rule ip filter invalid tcp flags & fin|syn == fin|syn counter drop
> 
> Although the generated rule is syntactically correct and accepted by
> nft, it will be interpreted in a different way than expected since
> binary AND takes precedence over OR.

And this one also applied, thanks!

      reply	other threads:[~2016-11-29 22:02 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-11-29 11:47 [iptables PATCH] tcp_xlate: Enclose LH flag values in parentheses Phil Sutter
2016-11-29 22:02 ` Pablo Neira Ayuso [this message]

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