From owner-freebsd-net@freebsd.org Tue Apr 23 21:39:26 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 15F3A158337F for ; Tue, 23 Apr 2019 21:39:26 +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 077BF8C22A for ; Tue, 23 Apr 2019 21:39:14 +0000 (UTC) (envelope-from eugen@grosbein.net) X-Envelope-From: eugen@grosbein.net X-Envelope-To: freebsd-net@freebsd.org Received: from [10.58.0.4] ([10.58.0.4]) by eg.sd.rdtc.ru (8.15.2/8.15.2) with ESMTPS id x3NLcx8q014850 (version=TLSv1.2 cipher=DHE-RSA-AES128-SHA bits=128 verify=NOT); Wed, 24 Apr 2019 04:39:00 +0700 (+07) (envelope-from eugen@grosbein.net) Subject: Re: openvpn and system overhead To: Wojciech Puchar References: <0cc6e0ac-a9a6-a462-3a1e-bfccfd41e138@grosbein.net> <5CBAB88C.4020402@grosbein.net> <5CBE803B.8060505@grosbein.net> Cc: "freebsd-net@freebsd.org" From: Eugene Grosbein Message-ID: <9db03cf0-e9a7-31b6-5d88-a9091e772f5c@grosbein.net> Date: Wed, 24 Apr 2019 04:38:55 +0700 User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:45.0) Gecko/20100101 Thunderbird/45.8.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 077BF8C22A 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 [-0.73 / 15.00]; ARC_NA(0.00)[]; TO_DN_EQ_ADDR_SOME(0.00)[]; MX_INVALID(0.50)[greylisted]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; NEURAL_HAM_MEDIUM(-0.92)[-0.924,0]; NEURAL_HAM_LONG(-0.89)[-0.893,0]; MIME_GOOD(-0.10)[text/plain]; DMARC_NA(0.00)[grosbein.net]; NEURAL_SPAM_SHORT(0.69)[0.685,0]; 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_TLS_ALL(0.00)[]; RCVD_COUNT_TWO(0.00)[2] 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: Tue, 23 Apr 2019 21:39:26 -0000 Moving to net@ 24.04.2019 1:06, Wojciech Puchar wrote: >>> 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. >> >> >> > so do you have an URL for guide how to do this. i have no real knowlege of this and would like to test it, first in my home router. > > my server have of course static public IP, but clients may have anything You just run an IKE daemon of choice (ipsec-tools/racoon, strongswan etc.) And optionally run mpd5 daemon if you need to support IPSec/L2TP clients too. GENERIC kernel and standard daemon configuration is enough, no secrect knowledge. Just don't forget to enable NAT-T while configuring IKE daemon.