From owner-freebsd-net@freebsd.org Mon Jul 8 12:26:43 2019 Return-Path: Delivered-To: freebsd-net@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id D350215DD6B7 for ; Mon, 8 Jul 2019 12:26:42 +0000 (UTC) (envelope-from bu7cher@yandex.ru) Received: from forward103j.mail.yandex.net (forward103j.mail.yandex.net [IPv6:2a02:6b8:0:801:2::106]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 3CEBC6BEF5 for ; Mon, 8 Jul 2019 12:26:41 +0000 (UTC) (envelope-from bu7cher@yandex.ru) Received: from mxback17j.mail.yandex.net (mxback17j.mail.yandex.net [IPv6:2a02:6b8:0:1619::93]) by forward103j.mail.yandex.net (Yandex) with ESMTP id EF69667400B2; Mon, 8 Jul 2019 15:26:30 +0300 (MSK) Received: from smtp3o.mail.yandex.net (smtp3o.mail.yandex.net [2a02:6b8:0:1a2d::27]) by mxback17j.mail.yandex.net (nwsmtp/Yandex) with ESMTP id 0MpV5cm7RA-QUsKRB0Z; Mon, 08 Jul 2019 15:26:30 +0300 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex.ru; s=mail; t=1562588790; bh=0T3kcUvnTEZpKsOjaQme9ONvpRKXrxqW+bDPbSCglcE=; h=In-Reply-To:From:Date:References:To:Subject:Message-ID; b=Yj69O0+xcgM5ErHZefz+RxjvkIl1sESXDY+sCfl0EiyRZ6og3dZMBUyuLF8FMx1rt VARaz7xWMn37Q3z/CKGWJjt228Q8Ec4+q9xAUZ1hqUQOK3emGCnSSuySUEFmPajStG SpNmKB8uJdJ87z6dtnrP3INTtqH+++Qxh1vPQcec= Received: by smtp3o.mail.yandex.net (nwsmtp/Yandex) with ESMTPSA id yBOE7anyex-QU4eFOjJ; Mon, 08 Jul 2019 15:26:30 +0300 (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (Client certificate not present) Subject: Re: How to set up ipfw(8) NAT between an alias and the main IP address, when the alias is in another network? To: Yuri , "freebsd-net@freebsd.org" References: <8e388abc-f2ac-b070-cf86-a4d3971ac095@rawbw.com> From: "Andrey V. Elsukov" Openpgp: id=E6591E1B41DA1516F0C9BC0001C5EA0410C8A17A Autocrypt: addr=bu7cher@yandex.ru; prefer-encrypt=mutual; keydata= mQENBEwBF1kBCADB9sXFhBEUy8qQ4X63Y8eBatYMHGEFWN9ypS5lI3RE6qQW2EYbxNk7qUC5 21YIIS1mMFVBEfvR7J9uc7yaYgFCEb6Sce1RSO4ULN2mRKGHP3/Sl0ijZEjWHV91hY1YTHEF ZW/0GYinDf56sYpDDehaBF5wkWIo1+QK5nmj3vl0DIDCMNd7QEiWpyLVwECgLX2eOAXByT8B bCqVhJGcG6iFP7/B9Ll6uX5gb8thM9LM+ibwErDBVDGiOgvfxqidab7fdkh893IBCXa82H9N CNwnEtcgzh+BSKK5BgvPohFMgRwjti37TSxwLu63QejRGbZWSz3OK3jMOoF63tCgn7FvABEB AAG0JUFuZHJleSBWLiBFbHN1a292IDxidTdjaGVyQHlhbmRleC5ydT6JATgEEwECACIFAkwB F1kCGwMGCwkIBwMCBhUIAgkKCwQWAgMBAh4BAheAAAoJEAHF6gQQyKF6qmYIAI6ekfm1VA4T vqankI1ISE6ku4jV7UlpIQlEbE7/8n3Zd6teJ+pGOQhN5qk8QE7utdPdbktAzi+x7LIJVzUw 4TywZLXGrkP7VKYkfg6oyCGyzITghefQeJtr2TN4hYCkzPWpylkue8MtmqfZv/6royqwTbN+ +E09FQNvTgRUYJYTeQ1qOsxNRycwvw3dr2rOfuxShbzaHBB1pBIjGrMg8fC5pd65ACH5zuFV A0CoTNGMDrEZSfBkTW604UUHFFXeCoC3dwDZRKOWJ3GmMXns65Ai5YkA63BSHEE1Qle3VBhd cG1w0CB5FBV3pB27UVnf0jEbysrDqW4qN7XMRFSWNAy5AQ0ETAEXWQEIAJ2p6l9LBoqdH/0J PEFDY2t2gTvAuzz+8zs3R03dFuHcNbOwjvWCG0aOmVpAzkRa8egn5JB4sZaFUtKPYJEQ1Iu+ LUBwgvtXf4vWpzC67zs2dDuiW4LamH5p6xkTD61aHR7mCB3bg2TUjrDWn2Jt44cvoYxj3dz4 S49U1rc9ZPgD5axCNv45j72tggWlZvpefThP7xT1OlNTUqye2gAwQravXpZkl5JG4eOqJVIU X316iE3qso0iXRUtO7OseBf0PiVmk+wCahdreHOeOxK5jMhYkPKVn7z1sZiB7W2H2TojbmcK HZC22sz7Z/H36Lhg1+/RCnGzdEcjGc8oFHXHCxUAEQEAAYkBHwQYAQIACQUCTAEXWQIbDAAK CRABxeoEEMihegkYCAC3ivGYNe2taNm/4Nx5GPdzuaAJGKWksV+w9mo7dQvU+NmI2az5w8vw 98OmX7G0OV9snxMW+6cyNqBrVFTu33VVNzz9pnqNCHxGvj5dL5ltP160JV2zw2bUwJBYsgYQ WfyJJIM7l3gv5ZS3DGqaGIm9gOK1ANxfrR5PgPzvI9VxDhlr2juEVMZYAqPLEJe+SSxbwLoz BcFCNdDAyXcaAzXsx/E02YWm1hIWNRxanAe7Vlg7OL+gvLpdtrYCMg28PNqKNyrQ87LQ49O9 50IIZDOtNFeR0FGucjcLPdS9PiEqCoH7/waJxWp6ydJ+g4OYRBYNM0EmMgy1N85JJrV1mi5i Message-ID: <8c0f4366-f3e3-dbd6-c8e3-6644951c40d7@yandex.ru> Date: Mon, 8 Jul 2019 15:23:43 +0300 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:60.0) Gecko/20100101 Thunderbird/60.6.1 MIME-Version: 1.0 In-Reply-To: <8e388abc-f2ac-b070-cf86-a4d3971ac095@rawbw.com> Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="pVX86c9KJZ2d6995nUtQOJyUTxraDAORf" X-Rspamd-Queue-Id: 3CEBC6BEF5 X-Spamd-Bar: --------- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=yandex.ru header.s=mail header.b=Yj69O0+x; dmarc=pass (policy=none) header.from=yandex.ru; spf=pass (mx1.freebsd.org: domain of bu7cher@yandex.ru designates 2a02:6b8:0:801:2::106 as permitted sender) smtp.mailfrom=bu7cher@yandex.ru X-Spamd-Result: default: False [-9.69 / 15.00]; TO_DN_EQ_ADDR_SOME(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; TO_DN_SOME(0.00)[]; R_SPF_ALLOW(-0.20)[+ip6:2a02:6b8:0::/52]; FREEMAIL_FROM(0.00)[yandex.ru]; HAS_ATTACHMENT(0.00)[]; RCVD_COUNT_THREE(0.00)[4]; DKIM_TRACE(0.00)[yandex.ru:+]; MX_GOOD(-0.01)[mx.yandex.ru,mx.yandex.ru,mx.yandex.ru,mx.yandex.ru,mx.yandex.ru]; RCPT_COUNT_TWO(0.00)[2]; NEURAL_HAM_SHORT(-0.97)[-0.972,0]; DMARC_POLICY_ALLOW(-0.50)[yandex.ru,none]; SIGNED_PGP(-2.00)[]; RCVD_IN_DNSWL_LOW(-0.10)[6.0.1.0.0.0.0.0.0.0.0.0.2.0.0.0.1.0.8.0.0.0.0.0.8.b.6.0.2.0.a.2.list.dnswl.org : 127.0.5.1]; MIME_TRACE(0.00)[0:+,1:+,2:+]; SUBJECT_ENDS_QUESTION(1.00)[]; FREEMAIL_ENVFROM(0.00)[yandex.ru]; ASN(0.00)[asn:13238, ipnet:2a02:6b8::/32, country:RU]; MID_RHS_MATCH_FROM(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-1.000,0]; R_DKIM_ALLOW(-0.20)[yandex.ru:s=mail]; FROM_HAS_DN(0.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; MIME_GOOD(-0.20)[multipart/signed,multipart/mixed,text/plain]; RCVD_TLS_LAST(0.00)[]; DWL_DNSWL_LOW(-1.00)[yandex.ru.dwl.dnswl.org : 127.0.5.1]; TO_MATCH_ENVRCPT_SOME(0.00)[]; IP_SCORE(-3.51)[ip: (-9.15), ipnet: 2a02:6b8::/32(-4.65), asn: 13238(-3.73), country: RU(0.01)] X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 08 Jul 2019 12:26:43 -0000 This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --pVX86c9KJZ2d6995nUtQOJyUTxraDAORf Content-Type: multipart/mixed; boundary="U0yERktjwO716mcUZzWzmKt44OwVdEngr"; protected-headers="v1" From: "Andrey V. Elsukov" To: Yuri , "freebsd-net@freebsd.org" Message-ID: <8c0f4366-f3e3-dbd6-c8e3-6644951c40d7@yandex.ru> Subject: Re: How to set up ipfw(8) NAT between an alias and the main IP address, when the alias is in another network? References: <8e388abc-f2ac-b070-cf86-a4d3971ac095@rawbw.com> In-Reply-To: <8e388abc-f2ac-b070-cf86-a4d3971ac095@rawbw.com> --U0yERktjwO716mcUZzWzmKt44OwVdEngr Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable On 06.07.2019 11:01, Yuri wrote: > My network interface looks like this: > $fw nat 1 config redirect_addr 192.168.100.2 192.168.1.2 redirect_addr > 192.168.1.2 192.168.100.2 if sk0 unreg_only reset >=20 > $fw add 1001 nat 1 tcp from 192.168.100.2/32 to any via sk0 keep-state >=20 > $fw add 1002 check-state >=20 >=20 > The rule 1001 has keep-state, therefore it should process both outgoing= > tcp and incoming response packets. But the outbound packets are NATted,= > but the inbound ones are not. >=20 > What is wrong, and how to fix this script? 'keep-state' creates state for TCP connection that is not yet translated, thus it won't handle the reply packet, that has translated address/port. --=20 WBR, Andrey V. Elsukov --U0yERktjwO716mcUZzWzmKt44OwVdEngr-- --pVX86c9KJZ2d6995nUtQOJyUTxraDAORf 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 - https://www.enigmail.net/ iQEzBAEBCAAdFiEE5lkeG0HaFRbwybwAAcXqBBDIoXoFAl0jNdAACgkQAcXqBBDI oXqSiQf9HgbJEsSBjVUXhGLwDkUEiJvFZbZ/hA6MMxEq2s7xxy+L9RvJ9XWEsu82 r8FRwpFk2RNtGFyUoYUk9hUCSLx8Ukt3RMoaUb8un3XEYZIzzlraa+z0il59UCm0 pxr4KVM3I/1fFpn6TrlwV0OL/ZvzI3DzQoMqZvUvAUydYChPDSVbtOc02GL2zFNx UACQCRwU5yohxFmKmU6F2T6lzmrGn4kGz1DvdSFZGp2GdQEAKJFSPeLH0apopyMW aM7DzteMgQcfthq8fb2/KKSdA3XD6v1ZHHFVlY1nVXBpIwGqzk5V8hdt9O1jGk6V oLQ500Ldj9oPFovfpU0Jw16qxDUkdg== =wl+Y -----END PGP SIGNATURE----- --pVX86c9KJZ2d6995nUtQOJyUTxraDAORf--