Help understanding basic FreeBSD concepts (ports, updates, jails)

Bill Moran wmoran at
Fri Nov 6 18:22:34 UTC 2009

In response to Manolis Kiagias <sonicy at>:

> Roger wrote:
> > My third item is jails. I currently have only one external IP. I would
> > like to setup two jails, one for apache and the other for postfix.
> > Would that require more external IPs? If I wanted to have ssh access
> > to the host and the jails that would definitely will require 3
> > external IPs right?

You can do some funky address aliasing with (for example) pf or ipfw, but
it gets rather complex.

So, the answer is, "No, you don't need multiple IPs, but the setup gets
rather complicated if you don't have multiple IPs.  As a result, most
people who do this will have multiple IPs."

Bill Moran

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