TechFak SSH authentication management service
	Setup an authorized_keys for access to shell.techfak.de
	Login to 
shell.techfak.de is possible only through 
SSH keylogin. This site helps you to setup the necessary 
authorized_keys file, which decides what keys are permitted to access your account. If you do not have a SSH public key yet, you need to 
generate one before.
In case you are not comfortable with web-browsers, you may also do everything straight from the command-line using tf-ssh-auth-keys ony any Netboot powered machine within the TechFak.