> ALL: ALL: (/usr/sbin/wall test) &
>
> Of course, this does not do anything but broadcast "test" to all of the
> consoles, but it should have executed the command when i tried to telnet
> into my machine, which it did not. Furthermore, it did not even allow me
> into the machine using telnet. (when i commented out the "(/usr/sbin/wall
> test) &" part it does let me in)
ALL: ALL: spawn ( /bin/echo -e "%s Connection attempt blocked" | \
/bin/mail -s "Connect attempt to %d blocked" admin )
There's a handful of documentation covering this subject on
http://www.linuxsecurity.com/docs
dave
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