a login question

a login question

[Bill J.Xu]

hello everyone,

When we telnet a linux box,we get the following messenge usually:

Redhat linux
abc login:

how to conceal the hostname information--abc? that is the welcome messenge as following:

Redhat linux
login:


THANKS
:)


Bill J.Xu

Re: a login question

[Valdis.Kletnieks]

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On Wed, 08 Oct 2003 14:36:43 +0800, "Bill J.Xu" <xujz@neusoft.com>  said:

> how to conceal the hostname information--abc? that is the welcome messenge as
 following:

1) This is off-topic for a *kernel* list.

2) This is bogus security - they telnet'ed to the machine, they already *know*
its name/IP address.  You should leave the hostname in so legitimate users can
verify they've gotten to the *right* machine (what, you've never had a server farm
with dozens/hundreds of machines and typed 'telnet foo23' when you meant
'telnet foo24'?)

3) You should be using SSH instead.

4) /usr/sbin/telnetd invokes /bin/login which calls pam.  The hostname gets
printed after telnetd does /etc/issue.  Since I think it's a bad idea, that's
all the hints I'm giving today.  The answer can be found in the telnet, util-linux,
and/or PAM src.rpm's.  If you're going to mess with this, you should learn how
it works, and reading the source is a good way to do that...



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