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Date:      Wed, 6 Jun 2018 21:07:09 +0300
From:      "Andrey V. Elsukov" <bu7cher@yandex.ru>
To:        Dries Michiels <driesm.michiels@gmail.com>, freebsd-ipfw@freebsd.org
Subject:   Re: Matching rules on ip4/ip6 with udp/tcp
Message-ID:  <4f4df436-0ccd-4763-5c48-190569e2b45b@yandex.ru>
In-Reply-To: <001001d3fdbc$d804d270$880e7750$@gmail.com>
References:  <001001d3fdbc$d804d270$880e7750$@gmail.com>

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From: "Andrey V. Elsukov" <bu7cher@yandex.ru>
To: Dries Michiels <driesm.michiels@gmail.com>, freebsd-ipfw@freebsd.org
Message-ID: <4f4df436-0ccd-4763-5c48-190569e2b45b@yandex.ru>
Subject: Re: Matching rules on ip4/ip6 with udp/tcp
References: <001001d3fdbc$d804d270$880e7750$@gmail.com>
In-Reply-To: <001001d3fdbc$d804d270$880e7750$@gmail.com>

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On 06.06.2018 20:36, Dries Michiels wrote:
> Dear Mailing List,
>=20
> Is there are way to match packets specifying both network generation ip=
4 or
> ip6 together with the protocol such as tcp or udp?
>=20
> Currently the following rules are possible (examples):
>=20
> ipfw add 1 allow udp from any to me 22 in recv em0
>
> The following rule is not possible (example):
>=20
> ipfw add 1 allow ip4 udp from any to me 22 in recv em0

You can use "proto" option:
ipfw add 1 allow ip4 from any to me 22 in recv em0 proto tcp
ipfw add 1 allow tcp from any to me 22 in recv em0 not proto ip6
ipfw add 1 allow ip6 from any to me 22 in recv em0 proto tcp

--=20
WBR, Andrey V. Elsukov


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