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To access interactive sessions via ssh, users can connect to the machine with their TechFak username. This is intended as a pass-through machine to connect to other computers within the TechFak network. A one-time setup is required to log in.

One-time setup

An SSH key pair is required to access This key can be uploaded either via our web interface or on one of our Netboot computers using the command line program tf-ssh-auth-keys.

Generate a new key pair:

ssh-keygen -t ed25519
Upload the key within the university (or in the VPN) at

We recommend using PuTTY for Windows. Instructions can be found in the following video