From: Martin Mačok (martin.macok@underground.cz)
Date: Mon Dec 08 2003 - 05:30:26 EST
On Sun, Dec 07, 2003 at 11:21:01AM -0600, Beaty, Bryan wrote:
> Port 23 and 25 are open but cannot be identified by AMAP or NMAP.
> When I telnet <ip> 23 or 25 I get a blank screen.
You should use netcat (nc) instead of telnet to do this, because
telnet sends out some terminal control sequence too.
> Does this mean the telnet and SMTP server have crashed?
Probably not. If it crashes then the port is usually closed.
> Could it be that someone has installed some other service on these
> ports?
Maybe, try amapcrap ...
Is the connection closed (by the server) after some time? The port
could be somehow "tarpitted" ... or some sort of honeypot/IDS too.
--
Martin Mačok http://underground.cz/
martin.macok@underground.cz http://Xtrmntr.org/ORBman/
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