> But you didn't ask about how to limit access via telnet to "servers > controlled by consoles attached to industrial machines and trucks of a > big plant", you asked, on a trustix mailing list, how to limit access > via telnet, so it seems you want to limit access via telnet to a trustix > machine (and the former would be an odd question to ask on a trustix > mailing list anyway). Presumably, these "industrial machines" have some > kind of admin interface that is controlled via telnet -- that's fine, > and unrelated to logging into the trustix machine. For logging into a > trustix machine, you should be using ssh -- and not just for security, > but because ssh has tremendously better terminal support. > >> So, can I prevent users from loggin in twice with the same username and how? > > On the console... since the console can only physically be used by one > person at a time, you could just comment out all but one of the getty > lines in /etc/inittab, then only one session CAN be logged in to the > console at a time.
I'm sorry for the confusion. The situation is one Trustix server running telnetd, korn shell and a console-based cobol application and many terminals in the plant, capable of running only telnet over IP to the Trustix server. The only limit there has to be on the Trustix server is to prvent the same user from logging in twice. -- Ariën Huisken _______________________________________________ tsl-discuss mailing list [email protected] http://lists.trustix.org/mailman/listinfo/tsl-discuss
