Date: Tue, 11 Aug 2020 13:15:03 -0700 From: Pete Wright <pete@nomadlogic.org> To: Odhiambo Washington <odhiambo@gmail.com> Cc: freebsd-virtualization@freebsd.org Subject: Re: FreeBSD a server and bhyve Message-ID: <0acc82ba-4779-f006-7ece-a003d0d0759c@nomadlogic.org> In-Reply-To: <CAAdA2WPnWgC23bzMLfj4isUqmJMXd_oiytu%2BZ0FB2WyoPJ-p6w@mail.gmail.com> References: <CAAdA2WP0hOZUWS9WLKpb_Pvz3HKp-WPdg5Bq_QEEf8JA6=gCRw@mail.gmail.com> <1c1e71ea-9f4f-b4a6-c6bb-f7cd201c0182@gmx.at> <CAAdA2WO7apAxikMzzqq0h5An2Vao5jSruZzt4ooLfJxk9Hh0CA@mail.gmail.com> <eb836f29-b7b5-1121-d5b6-968f2748e53a@nomadlogic.org> <CAAdA2WPnWgC23bzMLfj4isUqmJMXd_oiytu%2BZ0FB2WyoPJ-p6w@mail.gmail.com>
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On 8/11/20 12:38 PM, Odhiambo Washington wrote: > > > On Tue, 11 Aug 2020 at 20:23, Pete Wright <pete@nomadlogic.org > <mailto:pete@nomadlogic.org>> wrote: > > > > On 8/11/20 5:49 AM, Odhiambo Washington wrote: > > Hi infoomatic, > > > > Looks like I have to top-post so as to not mess the thread: > > > > The reason I need a VM is because I need to totally independent > host, > > with an independent name, with access to all ports of its own. > > It looks like I need another public IP for that. > > It depends on your use case. I have a single IPv4 address > allocated to > one of my systems and have setup various CNAME entries in DNS that > all > resolve to the same IP. I think that's a pretty common design > pattern > for people who colo their own servers and host multiple services > on them. > > the tricky part will be if you want to host multiple instances of the > same service though (multiple webservers for example). in that case > you'll most likely need multiple IPv4 address assigned to your system. > > > That's exactly where I am. > Suppose I obtained another IP for the VM, how do I make the VM the > only host listening on that IP then? this should be pretty straight forward - the first step would be to setup the additional public IP's as virtual addresses on your NIC similar to this: https://www.freebsd.org/doc/handbook/configtuning-virtual-hosts.html then setting up your firewall (pf or ipfw) to forward requests coming in on one of those public IP's to the specific bhyve VM which is listening on a private IP. this would be identical to hosting multiple services on a single IP. here's an example pf config that does the forwarding of SMTP on port 25 to a VM using a private IP to give you an idea of what the syntax would look like: rdr pass on $ext_if inet proto tcp from any to 1.2.3.4 port = 25 -> 10.1.0.10 port 25 hope this helps, -pete -- Pete Wright pete@nomadlogic.org @nomadlogicLA
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