[TriLUG] Semi-OT: MOTD only in TELNET?

[Tanner Lovelace]

On 6/6/07, Brian Henning <Brian.Henning at datadirect.com> wrote:
> What I'd like to do is have a MOTD that calmly suggests users switch to
> SSH.  To the effect of "You're using telnet.  Though telnet is enabled
> on this server, we encourage you to consider switching to SSH, because
> it is better."  So what I want to happen is that message be displayed at
> logon, but only if the user is connecting via telnet.  I don't want it
> to be displayed if the user is connecting via ssh.
>
> /etc/motd is used by logon, and would be displayed any time logon
> creates a shell for a user, whether telnet or ssh or local, so that's
> right out.  Does anyone know of a way to get a MOTD to display only for
> a particular kind of connection?  Maybe a way to set up a login script
> that only runs when it's a telnet connection?

Brian,

You're looking for /etc/issue.net

http://www.die.net/doc/linux/man/man5/issue.net.5.html

"issue.net - identification file for telnet sessions"

I think that should do what you want.

Cheers,
Tanner
-- 
Tanner Lovelace
clubjuggler at gmail dot com
http://wtl.wayfarer.org/
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