> I don't think anyone should rely on wtmp for any kind of security. > Whatof rsh? Its easy enough to do a rsh <host> xterm -ut -display <foo> > and avoid wtmp detection. The -ut flag tells xterm to not make a > entry in utmp and it never considers making a wtmp entry. I suppose > because it never has permissions to. The rsh server would have to > make the wtmp entry. Which is odd it doesn't because it does if > envoke a shell with it. Hmmmm... rsh does not make a wtmp entry; rlogin does. rsh is a flat link; i.e. you can't do IOCTL's on the client end and have them propagated across the link or whatever, it's just a socket connection. rlogin on the other hand emulates things like IOCTLs and so forth; since you are really "logging in" to the machine and not just executing a single command, it makes a wtmp entry. If given a hostname to connect to, but no specific command to execute, rsh invokes rlogin. Thus a wtmp entry is created. ...Robert