Date: Fri, 21 Jul 2017 14:08:03 +0300 From: "Andrey V. Elsukov" <bu7cher@yandex.ru> To: "Muenz, Michael" <m.muenz@spam-fetish.org>, freebsd-net@freebsd.org Subject: Re: NAT before IPSEC - reply packets stuck at enc0 Message-ID: <63e80fcf-915e-2dd5-d8c9-1904c8261c6f@yandex.ru> In-Reply-To: <cdb7e172-4074-4559-1e91-90c8e9276134@spam-fetish.org> References: <459d59f7-2895-8aed-d547-be46a0fbb918@spam-fetish.org> <a082662c-145e-0132-18ef-083adaa59c33@yandex.ru> <1c0de616-91ff-a6f9-d946-f098bc1a709f@spam-fetish.org> <911903d1-f353-d5d6-d400-d86150f88136@yandex.ru> <2d607e1a-a2c0-0f85-1530-c478962a76cd@spam-fetish.org> <3344e189-cdf0-a2c9-3a2a-645460866f2d@yandex.ru> <1279753e-9ad1-2c02-304e-5001e2bbc82f@spam-fetish.org> <15e6eb38-ef0c-7bfd-5f2c-d2acc8ea1af4@yandex.ru> <cdb7e172-4074-4559-1e91-90c8e9276134@spam-fetish.org>
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This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --gmPuCvSx6UrvnCXQKrGTPNihXU9uWuo96 Content-Type: multipart/mixed; boundary="6H74GAuUPqBj0aa4sp75mfpNH8L5PhWQx"; protected-headers="v1" From: "Andrey V. Elsukov" <bu7cher@yandex.ru> To: "Muenz, Michael" <m.muenz@spam-fetish.org>, freebsd-net@freebsd.org Message-ID: <63e80fcf-915e-2dd5-d8c9-1904c8261c6f@yandex.ru> Subject: Re: NAT before IPSEC - reply packets stuck at enc0 References: <459d59f7-2895-8aed-d547-be46a0fbb918@spam-fetish.org> <a082662c-145e-0132-18ef-083adaa59c33@yandex.ru> <1c0de616-91ff-a6f9-d946-f098bc1a709f@spam-fetish.org> <911903d1-f353-d5d6-d400-d86150f88136@yandex.ru> <2d607e1a-a2c0-0f85-1530-c478962a76cd@spam-fetish.org> <3344e189-cdf0-a2c9-3a2a-645460866f2d@yandex.ru> <1279753e-9ad1-2c02-304e-5001e2bbc82f@spam-fetish.org> <15e6eb38-ef0c-7bfd-5f2c-d2acc8ea1af4@yandex.ru> <cdb7e172-4074-4559-1e91-90c8e9276134@spam-fetish.org> In-Reply-To: <cdb7e172-4074-4559-1e91-90c8e9276134@spam-fetish.org> --6H74GAuUPqBj0aa4sp75mfpNH8L5PhWQx Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable On 21.07.2017 13:59, Muenz, Michael wrote: > Am 19.07.2017 um 15:35 schrieb Andrey V. Elsukov: >> >> Check what you will see if you set net.enc.in.ipsec_bpf_mask=3D3. >> You should see the reply two times, the second one should be with >> translated address. >> > Googling around with "nat before ipsec" and freebsd shows many topics > like this. > It seems with 11.0 release there were some significant changes to enc > which made this impossible. The only significant change to enc(4) was making it loadable. From other side it still work as before. Another problem is PF-specific, PF does if_output() after translation by self, and there is no chance for IPsec to finish encryption. Third problem mentioned here (deadlock in pf) is also PF-specific, and I'm not sure that it worked well before. With ipfw(4) it should work, at least on FreeBSD. pfsense/opensense have their own patches, so I don't know what can be wrong there. --=20 WBR, Andrey V. Elsukov --6H74GAuUPqBj0aa4sp75mfpNH8L5PhWQx-- --gmPuCvSx6UrvnCXQKrGTPNihXU9uWuo96 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQEzBAEBCAAdFiEE5lkeG0HaFRbwybwAAcXqBBDIoXoFAllx4JgACgkQAcXqBBDI oXpiWgf+LNL8tMmG1/PDAFA0mvQLMjueGeeoEy2krzM3Y6WktL8wp6VfEHuGaCth 0hhQZ3HJmcJRNjQQaT5IowN8kN217FrTGNhX1e9nthGlh8Kel+8qKX0mEsg8KIr2 w9pSjQdZPkG/c7abBcc6FybeoqlVSetkUj/BTE2RKgkjCVI4mA8OE55B31GE+Dj9 UthWEzvm+rIdK7JzmnhGu0/8arT3IcB/Y+8Xg2LgbGTo4p+SJl9dRqru5dUklu9D /+IJr7rtJdsIxL9QBMkoNvsgRKFpaEpehVx0uuRTtY3WpMswWqC9qe97C9Fb6ORL x5W/VROEX92qkPL8zrVa7gZZtX91Jg== =eIDK -----END PGP SIGNATURE----- --gmPuCvSx6UrvnCXQKrGTPNihXU9uWuo96--
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