RE: sshd for windows

["Depp, Dennis M." <deppdm () ornl gov>]

Chris,

NTLMv2 is an encryption method.  (Granted it is weak, but it still is
encrypted.)  By default, Microsoft Telnet uses NTLM to encrypt the
password.  This means the only client that can access the server is the
Microsoft telnet that comes with Windows 2000.  You can setup a Windows
2000 server with the default installation of telnet and see that the
password is encrypted.  

Denny

-----Original Message-----
From: Chris Berry [mailto:compjma () hotmail com] 
Sent: Thursday, June 19, 2003 3:05 PM
To: security-basics () securityfocus com
Subject: Re: sshd for windows

> From: Ansgar Wiechers <bugtraq () planetcobalt net>
> On 2003-06-18 Richard Parry wrote:
> > > theres a builtin telnet server included with win2k (server and
> > > workstation).
> >
> > Oh yeah, thats the perfect way of breaking into a machine ! Telnet
is
> > plain text, so is very easy to sniff anything that goes on ! I hope
> > you are being sarcastic !
>
> You do know, that by default Windows is using NTLM authentication for
> telnet, don't you? Of course that's not comparable to ssh, but it sure
> is a lot better than plaintext authentication.

Thats totally true, but worthless.  Authentication isn't the problem,
it's 
the transmission that's in the clear, so now you're sending your loging
name 
and password in cleartext.  Sure, they're stored in NTLMv2 format at the

other end, but what does that matter if they just put a sniffer on the
wire?

Chris Berry
compjma () hotmail com
Systems Administrator
JM Associates

"Within every man beats a heart of darkness." --The Shadow

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