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SSL VPN LDAP Issues

Posted on 2013-11-27
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Last Modified: 2013-12-19
Sonic Wall 3500 communicates with AD LDAP on Windows 2008 Standard servers, but will not complete.

"Credentials not valid at LDAP server" with port 3268 selected.

"Problem contacting LDAP server" with any other port.

LDAP works with other applications (AirWatch for one)

No evidence of the SW actually getting through to the server on the server logs.
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Question by:weburt
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Diverse IT earned 500 total points
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Hi weburt,

The error Credentials not valid at LDAP server usually occurs when the following log message is generated.LDAP Log ErrorFrom the log message it is evident that this is an LDAP Bind error. When integrating SonicWALL with an LDAP server, the user entered under Login user name of the LDAP > Settings tab makes a Bind request. This request could fail if the username, password or the directory entered under User tree for login to server is incorrect.

To resolve, check the following:
Check that the Login user name on the LDAP > Settings tab (if Give login name/location in tree is selected) is the display name and not the username. For example, John Doe is a display name and jdoe is the username.
LDAP Settings
Also check that the above user is in the directory entered under User tree for login to server. This is normally the Users directory.
LDAP Directory
Check if Give bind distinguished name is selected under LDAP > Settings, make sure it is correct. For example, this is the DN of an administrator in the Users directory:
CN=Administrator,CN=Users,DC=hal-2010,DC=local
That the password entered is correct.

Note: The user to bind to the LDAP server could be a normal domain user and need not be an administrator.

Let me know how it goes!
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