Re: AW: MS Terminal Services open to the world

From: John the Kiwi (john@johnthekiwi.com)
Date: Thu Jan 16 2003 - 22:42:00 EST


You should also look into publishing TS on a port other than 3389.

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Terminal
Server\winstations\RDP-TCP

Edit the key Port Number to enable the port you wish to connect to.

If you change the port to be 45535 just type the following into your
favourite TS client:192.168.1.1:45535

Rdesktop supports this from Beta 1.2 - any MS TS client will accept this
format.

You may also wish to do a search at www.securityfocus.com and search for
securely publishing Terminal Servers. There was an excellent article
that covered most situations but I've mislaid the link. Options included
encrypting the stream from custom port to custom port via zebedee which
is a small encryption program.

Hope that helps your friend a little

John the Kiwi
www.johnthekiwi.com

On Sat, 2003-01-11 at 08:39, Dominick Baier wrote:
> Hi,
>
> well the idea isn't _that_ bad at all -
>
> you have 128bit encryption - can make use of strong passwords - if all other
> ports are blocked from the world (esp. 135-139, 445)
> you have rich auditing -
>
> well, the approach is not worse than any other remote mgmt solution -
> besides SSH.....
>
> there are some pen test tools for ts - but the one we are all waiting for
> -tsgrinder- for brute forcing ts is still pending.
>
> check .
>
> www.hammerofgod.com
>
>
> greets
>
> -----Ursprüngliche Nachricht-----
> Von: Ralph Los [mailto:RLos@enteredge.com]
> Gesendet: Freitag, 10. Januar 2003 16:09
> An: 'Pen-test@securityfocus.com'
> Betreff: MS Terminal Services open to the world
> Vertraulichkeit: Vertraulich
>
>
> Hello all,
>
> I've got a pretty good client of mine who absolutely refuses to heed
> my warnings about keeping Terminal Services open to the world. They rely on
> Windows passwords and figure that's strong enough for all their servers
> (management). Now I'm given the task of auditing their
> security/infrastructure and would like to come up some creative ways to back
> up my point about MS TS open to the Internet being a bad idea.
>
> Any thoughts or input is appreciated.
>
> Ralph
>
>
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