Re: [PEN-TEST] Port 2001 question

["Block, Edward" <BLOCKED () MAIL NORTHGRUM COM>]

Port 200x on a router is primarily used to "reverse telnet."  In other
words, I have a modem plugged into the AUX port that I use to dial in to my
router from home.  If I need to configure the modem, I would console into
the router and then "telnet routerip 2001"  This would connect me to my
modem.

One thing to keep in mind, 2509 and 2511 are "terminal server" like devices
that have multiple async lines.  Therefore, I could have modems, terminals,
other routers, unix machines, etc. hanging off of the router.  Telnet to
port 2002 will connect the second async, 2003 the third, etc.

Eddie

> -----Original Message-----
> From: Dawes, Rogan (ZA - Johannesburg) [SMTP:rdawes () DELOITTE CO ZA]
> Sent: Tuesday, March 06, 2001 1:54 PM
> To:   PEN-TEST () SECURITYFOCUS COM
> Subject:      Re: [PEN-TEST] Port 2001 question
        <snip>

> * Port 2001 is commonly open on Cisco routers, connected to the AUX port.
> If
> the router has a modem on AUX, for whatever reason, you could get a
> terminal
> session on it by telnetting to port 2001. (I think - I've never done this.
> Well, never found any routers with modems on the AUX port, anyway)
        <snip>