how to stop using *telnet <domain> 25*

[Collins Richey]

On Sat, 24 Jan 2004 11:23:16 -0500
Bruce Marshall <bmarsh at bmarsh.com> wrote:

> On Saturday 24 January 2004 10:57 am, Swapana Ghosh wrote:
> > I ?have already blocked that IP. But the question is they can use another
> > IP, which they did before already once IP with different net work. So how
> > many IPs we will block? That is why i was wondering , if there is a way
> > then we can stop our tension for ever..
> 
> I was going to say  "get rid of the telnet client"  since no one really should 
> be using it for anything...  but...   a) There might be a need for it, or b) 
> he might already have a copy of the client (or could easily get one).
> 
> Is there any clue as to who it is?   In the mail sent?
> 

Mark the appropriate executable as executable only by root and/or move it to a library that is not on anyone's $PATH.  That way you can control who telnets.

-- 
Collins - Denver Area - 
Gentoo stable kernel 2.6.2-rc1