From: leroy christophe <christophe.leroy@c-s.fr>
To: Pablo Neira Ayuso <pablo@netfilter.org>, arturo.borrero.glez@gmail.com
Cc: netfilter@vger.kernel.org, GUITTON Alex <alex.guitton@c-s.fr>
Subject: Re: Problem setting up nftables dnat : dport set to 0 instead of requested value (22)
Date: Fri, 12 Dec 2014 11:08:59 +0100 [thread overview]
Message-ID: <548ABEBB.8000907@c-s.fr> (raw)
In-Reply-To: <5489984E.2050601@c-s.fr>
Le 11/12/2014 14:12, leroy christophe a écrit :
>
> Le 10/12/2014 19:22, Pablo Neira Ayuso a écrit :
>> On Wed, Dec 10, 2014 at 03:39:04PM +0100, leroy christophe wrote:
>>> Hi,
>>>
>>> I'm trying to redirect incoming tcp connections for port 222 to
>>> local port 22 (because I will dnat incoming connections for port 22
>>> to another destination).
>> Then you have to use "redirect" instead of "dnat". "redirect" will be
>> available since the upcoming 3.19-rc.
>>
>> Cc'ing Arturo, he has worked on the redirect support.
>>
>> @Arturo: Could you add documentation for your 'redirect' support to ?
>>
>> http://wiki.nftables.org/wiki-nftables/index.php/Performing_Network_Address_Translation_%28NAT%29
>>
>>
>> Thanks.
>>
> Thanks for the information.
>
> I have now applied patches 8d13edd, 9de920e and e9105f1 on my 3.18
> kernel, so now the redirect rule is accepted, but I still get the same
> issue: dport gets value 0 instead of 22 after the redirect, see below
>
> Is there any other patch to apply ?
>
> Christophe
>
Issue identified. I'll write another mail to explain it.
Christophe
>
> [ 932.304106] redir IN=eth0 OUT=
> MAC=08:00:51:20:44:5b:08:00:27:fe:42:1e:08:00 SRC=172.25.231.37
> DST=172.25.231.5 LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=22863 DF
> PROTO=TCP SPT=55116 DPT=222 WINDOW=14600 RES=0x00 SYN URGP=0
> [ 932.304523] rejected IN=eth0 OUT=
> MAC=08:00:51:20:44:5b:08:00:27:fe:42:1e:08:00 SRC=172.25.231.37
> DST=172.25.231.5 LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=22863 DF
> PROTO=TCP SPT=55116 DPT=0 WINDOW=14600 RES=0x00 SYN URGP=0
>
next prev parent reply other threads:[~2014-12-12 10:08 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-12-10 14:39 Problem setting up nftables dnat : dport set to 0 instead of requested value (22) leroy christophe
2014-12-10 18:22 ` Pablo Neira Ayuso
2014-12-10 20:29 ` Arturo Borrero Gonzalez
2014-12-11 13:12 ` leroy christophe
2014-12-12 10:08 ` leroy christophe [this message]
2014-12-12 10:16 ` bug : nft_redirect port byteorder issue leroy christophe
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