From owner-freebsd-hackers@freebsd.org Tue Apr 23 03:04:56 2019 Return-Path: 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 B5E84158BAC1 for ; Tue, 23 Apr 2019 03:04:53 +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 AC11C8BA02 for ; Tue, 23 Apr 2019 03:04:45 +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 x3N33M9n006063; Tue, 23 Apr 2019 10:03:22 +0700 (+07) (envelope-from eugen@grosbein.net) Subject: Re: openvpn and system overhead To: Louis Kowolowski , Wojciech Puchar References: <0cc6e0ac-a9a6-a462-3a1e-bfccfd41e138@grosbein.net> <5CBAB88C.4020402@grosbein.net> <25566D0F-72DF-4EF1-8900-8DD611D03B33@cryptomonkeys.org> Cc: freebsd-hackers@freebsd.org From: Eugene Grosbein Message-ID: <5CBE8079.1000704@grosbein.net> Date: Tue, 23 Apr 2019 10:03:21 +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: <25566D0F-72DF-4EF1-8900-8DD611D03B33@cryptomonkeys.org> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: AC11C8BA02 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 [0.16 / 15.00]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-0.22)[-0.220,0]; MX_INVALID(0.50)[cached]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_THREE(0.00)[3]; TO_DN_SOME(0.00)[]; NEURAL_HAM_LONG(-0.76)[-0.757,0]; MIME_GOOD(-0.10)[text/plain]; RCVD_TLS_LAST(0.00)[]; DMARC_NA(0.00)[grosbein.net]; NEURAL_SPAM_SHORT(0.73)[0.733,0]; TO_MATCH_ENVRCPT_SOME(0.00)[]; R_SPF_PERMFAIL(0.00)[]; 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 List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 23 Apr 2019 03:04:56 -0000 On 22.04.2019 22:58, Louis Kowolowski wrote: > On Apr 22, 2019, at 10:32 AM, 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. > > -ish > You must forward udp/4500 to the host and IPSec will negotiate a tunnel successfully. > > https://tools.ietf.org/html/rfc3947 No need to forward anything for client side.