Vulnerability Development mailing list archives

Re: Info about Microsoft Exchange application protocol


From: KHeadley () DLJ COM (Headley, Kevin)
Date: Tue, 25 Apr 2000 09:57:16 -0400


Gentlemen:

Please remember that the client itself can be configured to send clear text.
The protocol feature in later versions of Exchange server accepts this by
default.

The following article gives a precise breakdown of how this is arranged:
http://support.microsoft.com/support/kb/articles/Q175/4/40.ASP

-----Original Message-----
From: Walter Williams [SMTP:walter.williams () GENUITY COM]
Sent: Tuesday, April 25, 2000 12:25 AM
To:   VULN-DEV () securityfocus com
Subject:      Re: Info about Microsoft Exchange application protocol

There are a number of possible protocols at work here:

SMTP
IMAP 4
POP 3
LDAP 3

MAPI

So the first question becomes what is the nature of Outlook's
configuration,
(Open Internet or Corporate Workgroup).  Corporate Workgroup is limited to
MAPI, POP & SMTP.  Open Internet is limited to SMTP, IMAP, POP  & LDAP.

How the password is sent is a derivitive of that.  If MAPI, then yes
Outlook
passes a token of the password to the server.  If POP, IMAP
(Autheniticated
SMTP) any password may be sent as clear text unless the Exchange server is
configured to offer an encrypted authentication on these protocols and the
client is configured in a simular manner.

Walt

-----Original Message-----
From: VULN-DEV List [mailto:VULN-DEV () SECURITYFOCUS COM]On Behalf Of
Bobby, Paul
Sent: Monday, April 24, 2000 3:37 PM
To: VULN-DEV () SECURITYFOCUS COM
Subject: Info about Microsoft Exchange application protocol


I haven't done an exhaustive search, but asking here is part of it.

Where can I find information about the protocol exchange between Microsoft
Outlook and Exchange? Is the userid and password a standard windows
client->
windows server exchange?

Paul Bobby
-----------------
<dream> Got Root? </dream>


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