[jcifs] reuse of authentication credentials

Jan Asle Kroknes janasle at gmail.com
Fri Sep 4 04:05:45 MDT 2009

Hi all,

I'm using jcifs 1.3.3 to provide ntlmv1 authentication for a SIP

The first request received from the sip client is authenticated successfully
with the domain controller.
On the second request the client resend the type3message data from the first
request and my application attempts to authenticate with the domain
controller once more. This time the authentication fails with the following
error message: Logon failure: unknown user name or bad password. NT status:

Is this supposed to work at all? Is there something that can be done in
jcifs or in the domain controller to make sure that multiple authentication
attempts using the same ntlmpasswordauthentication credentials succeeds? I'd
prefer not to maintain too much state in my application and just pass all
authentication attempts directly to the domain controller.

Thanks in advance.

Jan Asle Kroknes
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