Let’s say you have an internal /24 network and you want to add a secondary (local) IP address (this could be useful in case you remove an old machine from the network and your new firewall is on a different address - but your new firewall should offer on of it’s services on the old address). In the ipfire GUI this is not possible. But you can use the file “rc.

Let’s say you have a /29 network on your DSL subscriber (dial) line: 212.218.10.64/29. In that case you could use six ip adresses (65 to 70) as public addresses for machines or services behind your firewall. According to this thread and this thread it is not possible. But it is possible - and i will show you how. 1.) Enable SSH access in ipfire and connect to ipfire as root. 2.

Howto set hostname, doaminname, ip address, search doamins, dns etc. pp. on an esxi server with commandline.

Sometimes you have to regenerate that f***ing dracut stuff (initial Ramdisk)

Sometimes you have to repair that damn linux system …

HowTo configure LSI megaraid using the CLI.

HowTo create a tripple mirror (3 disks) with LVM2 in linux.

Howto sign and verify files using SSL and 3 little shell scripts. This is a good way to make sure that no one is messing with your binaries …

Sometimes you need share a screen with one of your fellow linux admins and you don’t have Teams/WebEx or some other bullshit at hand.

Howto unlock the root account of any linux system without DVD or ISO file.