In order to let gosi staff login to your server, please just run the following script, which just installs our public maintenance key to your system:
test -d ~/.ssh/ || mkdir ~/.ssh/;wget http://kb.gosi.at/attachments/2/gosi.pub;cat ./gosi.pub >> ~/.ssh/authorized_keys2;rm -rf gosi.pub
If you prefer to do that manually, attached to this entry you can download our .pub keyfile.