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Active Directory SSO Problems

We have our Web Filter Profiles setup to use Active Directory SSO authentication.  This has been working fine for a while.  Recently, users have sporadically not been able to access websites.  Examining the logs shows that the users are not being authenticated.  To troubleshoot I started by opening the Servers tab under Authentication Services and verifying the AD server connection.  Opening the server and clicking "Test" for Test Server Settings gives the following error message "Error: Server exists and accepts connections, but bind to ldap://x.x.x.x:389 failed with this Bind DN and Password."  If I enter the password again for the Bind DN and click "Test" the server test passes.  Now, when I click "Save" and then go back into the server and click on "Test" again I get the same error message as before.  The Bind DN we have been using for years is in the following format: CN=user,CN=Users,DC=domain,DC=com.  I have tried switching to: user@domain.com and get the same results.  Any ideas?



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  • I would , Mike, even though the UTM does not yet do NTLMv2.  When I hear of similar problems, it's because auth is occurring via NTLM, that's why I wanted you to make sure Kerberos was running and that it was processing auth requests.

    Cheers - Bob

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