Package: x2goclient Version: 4.0.0.3 Severity: normal Dear maintainer, from time to time the SSH key used for identification by a X2GO server may change. When trying to connect the server a pop up is shown: "Anmeldung fehlgeschlagen" "Host-Key des Servers hat sich geändert Er lautet jetzt: 00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00 Aus Sicherheitsgründen wird die Verbindung abgebrochen" The user is left puzzled with what he should do next. There is no indication in which file there is a problem, e.g. ~/.ssh/known_hosts or %APPDATA%\ssh\known_hosts There is no indication which entry in this file is corrupted. Deleting file known_hosts is a bad idea because it may contain the keys for dozens of validated servers. There are examples of more informative output, e.g. from command line program ssh: @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY! Someone could be eavesdropping on you right now (man-in-the-middle attack)! It is also possible that a host key has just been changed. The fingerprint for the RSA key sent by the remote host is 00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00. Please contact your system administrator. Add correct host key in /home/user/.ssh/known_hosts to get rid of this message. Offending RSA key in /home/user/.ssh/known_hosts:1 RSA host key for 10.0.0.5 has changed and you have requested strict checking. Host key verification failed. Here I can identify the filename: /home/user/.ssh/known_hosts and the line of the the entry: 1 Manual editing of known_hosts is now possible but not too good an idea because it is error prone. A good solution is what you see in PuTTY. A warning pop up is shown and you get the choice to update file known_hosts. Best regards Heinrich Schuchardt