From owner-freebsd-jail@FreeBSD.ORG Wed Dec 23 10:20:08 2009 Return-Path: Delivered-To: freebsd-jail@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 60FB91065676; Wed, 23 Dec 2009 10:20:08 +0000 (UTC) (envelope-from bzeeb-lists@lists.zabbadoz.net) Received: from mail.cksoft.de (mail.cksoft.de [IPv6:2001:4068:10::3]) by mx1.freebsd.org (Postfix) with ESMTP id EA3908FC1E; Wed, 23 Dec 2009 10:20:07 +0000 (UTC) Received: from localhost (amavis.fra.cksoft.de [192.168.74.71]) by mail.cksoft.de (Postfix) with ESMTP id 6FF7B41C707; Wed, 23 Dec 2009 11:20:06 +0100 (CET) X-Virus-Scanned: amavisd-new at cksoft.de Received: from mail.cksoft.de ([192.168.74.103]) by localhost (amavis.fra.cksoft.de [192.168.74.71]) (amavisd-new, port 10024) with ESMTP id EYgba+EvCISV; Wed, 23 Dec 2009 11:20:05 +0100 (CET) Received: by mail.cksoft.de (Postfix, from userid 66) id CC30941C6DB; Wed, 23 Dec 2009 11:20:05 +0100 (CET) Received: from maildrop.int.zabbadoz.net (maildrop.int.zabbadoz.net [10.111.66.10]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.int.zabbadoz.net (Postfix) with ESMTP id 8BDAA4448EC; Wed, 23 Dec 2009 10:19:23 +0000 (UTC) Date: Wed, 23 Dec 2009 10:19:23 +0000 (UTC) From: "Bjoern A. Zeeb" X-X-Sender: bz@maildrop.int.zabbadoz.net To: Mel Flynn In-Reply-To: <200912221734.05795.mel.flynn+fbsd.hackers@mailing.thruhere.net> Message-ID: <20091223100943.T86040@maildrop.int.zabbadoz.net> References: <200912221734.05795.mel.flynn+fbsd.hackers@mailing.thruhere.net> X-OpenPGP-Key: 0x14003F198FEFA3E77207EE8D2B58B8F83CCF1842 MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Cc: freebsd-hackers@freebsd.org, freebsd-jail@freebsd.org Subject: Re: Jail on 2 interfaces? X-BeenThere: freebsd-jail@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: freebsd-jail@FreeBSD.org List-Id: "Discussion about FreeBSD jail\(8\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 23 Dec 2009 10:20:08 -0000 On Tue, 22 Dec 2009, Mel Flynn wrote: Hi, first of all this would find more people to help on freebsd-jail as it has nothing to do with hackers ;-) > I don't see this documented in jail(8) nor rc(8) nor defaults/rc.conf, so is > it possible to have 2 IP's on 2 ethernet interfaces? And if so, is it settable > for rc(8)? > > The usage case is to have the same jailed proxy server on two seperate > internal networks. Ideally, the proxy will use one address for outgoing, so I > guess I'll need a default route or dive into the squid config. > > At present I have: > ifconfig_bge0="inet 192.168.177.60 netmask 255.255.255.0" > ifconfig_em0="inet 192.168.176.60 netmask 255.255.255.0" > ifconfig_em0_alias0="inet 192.168.176.62 netmask 255.255.255.255" > jail_squid_rootdir="/usr/squid" > jail_squid_ip="192.168.177.62" > jail_squid_ip_multi0="192.168.176.62" > jail_squid_interface="bge0" > > But this created the IP on bge0 even though one exists on em0. Is it as simple > as not specifying the interface and add the 177.62 alias on bge0? > Ideally I'd have a jail_$jail_ip_multi$aliasno_interface="foo0", but my main > worry is that the jail infrastructure understands the routing involved. >From what you are writing I assume that you are on FreeBSD 7.2-Release or later; no official FreeBSD version before had supported multiple-IPs with a jail. What it did was what you were asking for. That's the problem. 1) either use ifconfig 2) or use jail + interfaces 3) but do not mix them (especially not overlapping) So I would suggest to do it like this: # Base system IPs. ifconfig_bge0="inet 192.168.177.60/24" ifconfig_em0="inet 192.168.176.60/24" jail_squid_rootdir="/usr/squid" # Either use: jail_squid_ip="bge0|192.168.177.62/32,em0|192.168.176.62/32" # or: jail_squid_ip="bge0|192.168.177.62/32" jail_squid_ip_multi0="em0|192.168.176.62/32" but do not use jail_squid_interface=".." as that will be a global default for that jail. As you can see, I removed the ifconfig_em0_alias0 line. If you want to keep that and mix things then you could do: jail_squid_ip="bge0|192.168.177.62/32" jail_squid_ip_multi0="192.168.176.62/32" again without the jail_squid_interface=".." line. HTH /bz -- Bjoern A. Zeeb It will not break if you know what you are doing.