New series: FreeBSD Foundationals

Part 1 is about Jails - specifically VNET Jails. What epair interfaces actually are (virtual ethernet cables), how bridges tie them together, why the host is basically a router for your jails, and what devfs rulesets control.

Covers the full lifecycle from jail.conf through pf firewalling with NAT/RDR for IPv4 and direct routing for IPv6. Plus the gotchas that'll cost you hours if nobody warns you.

Not a beginner tutorial, hardcore details. The useful middle.

https://blog.hofstede.it/freebsd-foundationals-jails-from-chroot-on-steroids-to-full-virtual-networks/

#Unix #FreeBSD #Networking #Jails #DevOps #SelfHosting #Sysadmin