Rob Gongrijp has this nice repository [Wayback/Archive.is] ropg/ipocalypse: FreeBSD jails with web servers on a single IPv4 address:
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To deal with web servers (which all need to be reached at ports 80 (http) and 443 (https), I describe a convenient Apache reverse proxy setup in its own jail, and the management script I wrote to make things super-easy.
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Via [Archive.is] ᖇ⦿ᖘ Gonggrijp on Twitter: “HOWTO for setting up a FreeBSD host with multiple jails running web servers on a single IPv4 address. (No rocket science: just a general HOWTO plus an easy certificate management / reverse proxy script which also works on other systems with adaptation.) … “
With an interesting response [Archive.is] corbosman on Twitter: “I use kubernetes/traefik pretty much like that, and before that docker/traefik. It’s getting more and more difficult to get IP space at all.… “
–jeroen
The Wiert Corner - irregular stream of stuff 