Telnet connection closes immediately upon connecting

[m.roth2006 at rcn.com]

>Date: Mon, 15 Oct 2007 15:14:13 -0500
>From: "Kristoffer Knigga" <Kknigga at arrow-financial.com>  
>Subject: Telnet connection closes immediately upon connecting  
<snip>
weekend we
>rolled out a new server with this application and soon after users
>started hitting it this morning telnetd started dropping new connections
>as soon as they were made.  By all accounts, existing telnet sessions
>and ssh were unaffected.
>
>Example:
>$ telnet localhost
>Trying 127.0.0.1...
>Connected to localhost.localdomain (127.0.0.1).
>Escape character is '^]'.
>Connection closed by foreign host.
<snip>
Looks to me as though someone has shut down or firewalled telnet, to block new incoming connections. I'd want to look at the logs on the host, both messages and secure.

     mark