It's simple, but every time I need to look it up
Archive of posts tagged iptables
Bidirectional full-cone NAT (bleah)
This shouldn't be done, but sometimes you don't get to choose.
Munin traffic accounting with iptables
Get graphs for specific protocol, ports, or IP address
iptables debugging
Using the raw table with the TRACE target
Controlling client-to-client connections in OpenVPN
To do that, do NOT use client-to-client in the configuration file!
