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[65.25.51.0]) by smtp.googlemail.com with ESMTPSA id f31sm4807866qte.35.2020.08.06.04.43.57 (version=TLS1 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Thu, 06 Aug 2020 04:43:57 -0700 (PDT) Message-ID: <5F2BECFC.9010002@gmail.com> Date: Thu, 06 Aug 2020 07:43:56 -0400 From: Ernie Luzar User-Agent: Thunderbird 2.0.0.24 (Windows/20100228) MIME-Version: 1.0 To: Shane Ambler CC: Arthur Chance , "freebsd-questions@freebsd.org" Subject: Re: how to make a non-vnet jail local only? References: <5F2A051D.4030604@gmail.com> <77719bef-6c53-21a7-ca17-3ebac05427b9@qeng-ho.org> <5F2ABF80.4080208@gmail.com> <15ab4539-afaf-df6e-8c36-bf8056723999@qeng-ho.org> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 4BMmq32ltSz42F5 X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=gmail.com header.s=20161025 header.b=Ty8bII8x; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (mx1.freebsd.org: domain of luzar722@gmail.com designates 2607:f8b0:4864:20::734 as permitted sender) smtp.mailfrom=luzar722@gmail.com X-Spamd-Result: default: False [-2.10 / 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)[+ip6:2607:f8b0:4000::/36:c]; FREEMAIL_FROM(0.00)[gmail.com]; RCVD_COUNT_THREE(0.00)[3]; DKIM_TRACE(0.00)[gmail.com:+]; DMARC_POLICY_ALLOW(-0.50)[gmail.com,none]; NEURAL_HAM_SHORT(-0.16)[-0.162]; RECEIVED_SPAMHAUS_PBL(0.00)[65.25.51.0:received]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:15169, ipnet:2607:f8b0::/32, country:US]; MID_RHS_MATCH_FROM(0.00)[]; FREEMAIL_ENVFROM(0.00)[gmail.com]; DWL_DNSWL_NONE(0.00)[gmail.com:dkim]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-0.94)[-0.939]; R_DKIM_ALLOW(-0.20)[gmail.com:s=20161025]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_THREE(0.00)[3]; NEURAL_HAM_LONG(-1.00)[-0.996]; MIME_GOOD(-0.10)[text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-questions@freebsd.org]; TO_MATCH_ENVRCPT_SOME(0.00)[]; RCVD_IN_DNSWL_NONE(0.00)[2607:f8b0:4864:20::734:from]; SUBJECT_ENDS_QUESTION(1.00)[]; RCVD_TLS_ALL(0.00)[] X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 06 Aug 2020 11:44:00 -0000 Shane Ambler wrote: > On 6/8/20 1:39 am, Arthur Chance wrote: >> On 05/08/2020 15:17, Ernie Luzar wrote: >>> Arthur Chance wrote: >>>> On 05/08/2020 02:02, Ernie Luzar wrote: >>>>> I have non-vnet jails working that can reach the public internet. >>>>> But now I would like to make some local only non-vnet jails that can >>>>> only access other local only non-vnet jails. BY local meaning have no >>>>> access to the public internet. >>>>> >>>>> How do I make this happen? >>>>> >>>>> Thanks for any pointers. >>>> Create a second loopback interface (cloned_interfaces="lo1" in >>>> /etc/rc.conf or ifconfig lo1 create for manual control) and put the >>>> local jails on lo1 without access to any other interface. >>>> >>> I tested this already and it doesn't work. >>> >>> non-vnet jail with lo99 for the nic and ip address of 10.0.28.5 can >>> still reach the public internet. > > Do you have bridging or routing enabled? > > Routing can receive foreign packets on an interface and route them to a > different interface. > > Bridging connects interfaces, sending the same packets on each. > > > While I don't have jails setup, I use sysutils/vm-bhyve for bhyve > instances. I have two "vm switches" which are bridge interfaces > connecting bhyve instances with physical interfaces, one bridges with > wlan0 and allows a vm to get internet access, the second bridges with > re0, which has no physical connection and provides no internet access to > bhyve instances, but I can ssh into it from the host. > > I have - > net.link.bridge.ipfw: 0 > net.link.bridge.ipfw_arp: 0 > net.link.bridge.pfil_bridge: 1 > net.link.bridge.pfil_onlyip: 1 > net.inet.ip.sourceroute: 0 > Using 12.1 generic with the system default for those settings.