I do not know one thing.
I intented to let root logined only from my Linux box, not telnet.
so I modified /etc/securetty. Several days ago, It worked fine, that
is, the telnet user could not login as root, and could SUed to root.
but now, I tried, I can sued to root from ttyp*, I do not know why.
and I want to know the function of the file /etc/ttys
Thank you!
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Duan Zhenhai
Room 1105,BLDG.47
ccdzh@pku.edu.cn Peking University
Beijing 100871
P.R.China
URL: http://shoukui.pku.edu.cn/duan