Iptables-apply or how to avoid unnecessary site visits when changing firewall configuration

Today’s post is definitely of the short and sweet variety. I happened across the file list for iptables the other day and noticed a binary I had not come across before “iptables-apply”. Iptables-apply is a script that applies firewall rules and then waits a configurable amount of time, for user input, to confirm the changes […]

Transparent bridging firewalls

The commands in this article can be used on any Ubuntu/Debian machine. A transparent bridging firewall is a firewall which can be inserted anywhere on a network, but usually between the network segment containing internet access and the rest of a LAN. Generally they are used to silently police and log traffic from the network […]

Ubuntu as a wireless 80211g/n access point/router

Following relatively recent improvements in the Linux wireless stack and driver support it is now possible to setup a Linux machine as an access point, even if you don’t have an Atheros chipset (which was historically the case). Support is patchy but I would say there is a good chance you can do this if […]