Date: Mon, 22 Apr 2019 21:53:45 +0200 (CEST) From: Wojciech Puchar <wojtek@puchar.net> To: Louis Kowolowski <louisk@cryptomonkeys.org> Cc: Wojciech Puchar <wojtek@puchar.net>, Eugene Grosbein <eugen@grosbein.net>, freebsd-hackers@freebsd.org Subject: Re: openvpn and system overhead Message-ID: <alpine.BSF.2.20.1904222153110.30142@puchar.net> In-Reply-To: <25566D0F-72DF-4EF1-8900-8DD611D03B33@cryptomonkeys.org> References: <alpine.BSF.2.20.1904171707030.87502@puchar.net> <0cc6e0ac-a9a6-a462-3a1e-bfccfd41e138@grosbein.net> <alpine.BSF.2.20.1904191841200.44949@puchar.net> <5CBAB88C.4020402@grosbein.net> <alpine.BSF.2.20.1904221731560.76479@puchar.net> <25566D0F-72DF-4EF1-8900-8DD611D03B33@cryptomonkeys.org>
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> can IPSEC VPN work over nat? even freebsd-freebsd case. > > I cannot find any tutorial how to do this. > > > -ishYou must forward udp/4500 to the host and IPSec will negotiate a tunnel successfully. usually i cannot do it when being over nat that isn't under my control From owner-freebsd-hackers@freebsd.org Tue Apr 23 03:02:40 2019 Return-Path: <owner-freebsd-hackers@freebsd.org> Delivered-To: freebsd-hackers@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 3995D158B515 for <freebsd-hackers@mailman.ysv.freebsd.org>; Tue, 23 Apr 2019 03:02:40 +0000 (UTC) (envelope-from eugen@grosbein.net) Received: from eg.sd.rdtc.ru (eg.sd.rdtc.ru [IPv6:2a03:3100:c:13::5]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "eg.sd.rdtc.ru", Issuer "eg.sd.rdtc.ru" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 336078B12C for <freebsd-hackers@freebsd.org>; Tue, 23 Apr 2019 03:02:28 +0000 (UTC) (envelope-from eugen@grosbein.net) X-Envelope-From: eugen@grosbein.net X-Envelope-To: freebsd-hackers@freebsd.org Received: from eg.sd.rdtc.ru (eugen@localhost [127.0.0.1]) by eg.sd.rdtc.ru (8.15.2/8.15.2) with ESMTP id x3N32JB6006038; Tue, 23 Apr 2019 10:02:19 +0700 (+07) (envelope-from eugen@grosbein.net) Subject: Re: openvpn and system overhead To: Wojciech Puchar <wojtek@puchar.net> References: <alpine.BSF.2.20.1904171707030.87502@puchar.net> <0cc6e0ac-a9a6-a462-3a1e-bfccfd41e138@grosbein.net> <alpine.BSF.2.20.1904191841200.44949@puchar.net> <5CBAB88C.4020402@grosbein.net> <alpine.BSF.2.20.1904221731560.76479@puchar.net> Cc: freebsd-hackers@freebsd.org From: Eugene Grosbein <eugen@grosbein.net> Message-ID: <5CBE803B.8060505@grosbein.net> Date: Tue, 23 Apr 2019 10:02:19 +0700 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:38.0) Gecko/20100101 Thunderbird/38.4.0 MIME-Version: 1.0 In-Reply-To: <alpine.BSF.2.20.1904221731560.76479@puchar.net> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 336078B12C X-Spamd-Bar: / Authentication-Results: mx1.freebsd.org; spf=permerror (mx1.freebsd.org: domain of eugen@grosbein.net uses mechanism not recognized by this client) smtp.mailfrom=eugen@grosbein.net X-Spamd-Result: default: False [0.15 / 15.00]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-0.38)[-0.382,0]; MX_INVALID(0.50)[greylisted]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; NEURAL_SPAM_SHORT(0.43)[0.429,0]; NEURAL_HAM_LONG(-0.30)[-0.298,0]; MIME_GOOD(-0.10)[text/plain]; RCVD_TLS_LAST(0.00)[]; DMARC_NA(0.00)[grosbein.net]; TO_MATCH_ENVRCPT_SOME(0.00)[]; R_SPF_PERMFAIL(0.00)[]; RCPT_COUNT_TWO(0.00)[2]; IP_SCORE(0.00)[country: RU(0.00)]; FROM_EQ_ENVFROM(0.00)[]; R_DKIM_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:29072, ipnet:2a03:3100::/32, country:RU]; MID_RHS_MATCH_FROM(0.00)[]; RCVD_COUNT_TWO(0.00)[2] X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Technical Discussions relating to FreeBSD <freebsd-hackers.freebsd.org> List-Unsubscribe: <https://lists.freebsd.org/mailman/options/freebsd-hackers>, <mailto:freebsd-hackers-request@freebsd.org?subject=unsubscribe> List-Archive: <http://lists.freebsd.org/pipermail/freebsd-hackers/>; List-Post: <mailto:freebsd-hackers@freebsd.org> List-Help: <mailto:freebsd-hackers-request@freebsd.org?subject=help> List-Subscribe: <https://lists.freebsd.org/mailman/listinfo/freebsd-hackers>, <mailto:freebsd-hackers-request@freebsd.org?subject=subscribe> X-List-Received-Date: Tue, 23 Apr 2019 03:02:40 -0000 On 22.04.2019 22:32, Wojciech Puchar wrote: >>> well it has to cooperate with multitude of clients like windoze, >>> point&click routers etc. that's why openvpn. >> >> Windows has stock support for IPSec with and without L2TP and has no stock openvpn, so IPSec is more preferable. > > can IPSEC VPN work over nat? even freebsd-freebsd case. > > I cannot find any tutorial how to do this. FreeBSD 11.1 and later supports IPSec NAT Traversal out-of-the-box.
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