Great Circle Associates Firewalls
(October 1994)
 

Indexed By Date: [Previous] [Next] Indexed By Thread: [Previous] [Next]

Subject: Re: Firewalls and Novell Servers
From: "Peter Summers, Computer Engineer, Cardiology" <PETER @ cardiology . medrmh . unimelb . edu . au>
Organization: Royal Melbourne Hospital
Date: Mon, 17 Oct 1994 10:10:57 +1000
To: Wulf Losee <wlosee @ Getty . Edu>, firewalls @ greatcircle . com
Priority: normal

> Finally, Peter Summers' last statement worries me:
> > What would the paswwords (sic) be doing in IP packets? Besides,
> > they're encryrypted (sic), I think quite securely..

Whoops.

> I assumed that NetWare passwords *would* be in IP packets *if* you've
> enabled telnet or FTP on your NetWare server.  Please correct me if I'm
> wrong about this; I haven't had a chance to rev up my protocol analyzer
> to test my impetuous statement.  Moreover, all the Ethernet protocol

Yes, if you enable FTP or Telnet, I suspect you're right.  Does
anyone out there know for sure?

> analyzers I've seen can capture IPX packets just as well as IP packets.
> Peter is correct when he says that NetWare passwords are encrypted,
> but what if (1) you knew the encryption algorithm and (2) used that
> algorithm to encrypt a dictionary of English words?  Knowing how lazy
> most people are about creating their passwords, I bet you could hit
> paydirt pretty easily if you had captured a bunch of encrypted
> passwords and compared them to the list of words in your encrypted
> dictionary.

Again, you're probably correct.  Another good reason not to enable
FTP or Telnet.

Cheers,

Peter Summers                      <u5533129 @
 ucsvc .
 ucs .
 unimelb .
 edu .
 au>

Cardiology Department                   Phone   (+613/03) 342 8727 (B)
Royal Melbourne Hospital                        (+613/03) 387 4203 (H)
AUSTRALIA  3050                         Fax     (+613/03) 347 2808

Indexed By Date Previous: Re: Firewalls and Novell Servers
From: Wulf Losee <wlosee @ Getty . Edu>
Next: Re: Firewalls and Novell Servers
From: zambrano @ nywork1 . undp . org (Raul Zambrano)
Indexed By Thread Previous: Re: Firewalls and Novell Servers
From: prc @ jaguar . inesc . pt (Pedro Ramalho Carlos)
Next: Help!
From: Roberto Leal <rleal @ cnj . digex . net>

Google
 
Search Internet Search www.greatcircle.com