Hi, I have read the Peter's mail, I have the exact same problems. I tried succesfully to connect with telnet on 141.30.4.1 . I work on address 131.175.5.1 (vax 6400) or 131.175.8.1 (Convex). This probelms are beginning when was changed IP number (129.229.20.254). Thank you Bruno Minoja minoja at icil64.cilea.it