passwordless user accounts

[Carl Cerecke]

I have a couple of passwordless accounts on my machine at home for my 
wife and kids. For the kids (6 and 4), simply typing their username 
"kids" takes some time and is error-prone, let alone typing a password 
that they cannot see.

Is there a way that I can restrict logins of these two usernames to the 
display manager only (gdm for RH9)? Or, perhaps, not allow ssh logins 
unless from localhost? (I hope I haven't got telnetd running). I'm only 
on dial-up, and the IP changes with each connection, but it is not 
terribly difficult to get in if you know how.

I have to get it sorted now - especially when this message hits the 
archives and gets googled :-)

Any ideas? Or should I teach them about passwords?

Cheers,
Carl.