How To Check Ldap Authentication In Windows
Troubleshooting Agile Directory Hallmark bug with Splash Folio using Windows Upshot Viewer
Sign-on Splash folio with Active Directory authentication uses LDAP/TLS to securely bind to a Global Catalog for authentication. Specifically, the AP performs a secure LDAP demark to the Domain controller on Global Catalog TCP port 3268 using the admin credentials specified in Dashboard and searches the directory for the user with the credentials entered into the splash folio.
Troubleshooting authentication failures
Examining LDAP interface events in the Windows Directory Service Consequence log can help make up one's mind if a bad countersign or bad username is the cause of the authentication failure. To enable LDAP debugging logs on the Domain Controller, set the LDAP Interface Events to verbose using DWORD value 5 in the Windows registry. Once LDAP events accept been enabled, open up the Windows Event Viewer and navigate to Applications and Services Logs > Directory Service.
Before running the widget test or trying to cosign via the splash page to generate some logs, clear the older logs or filter the current logs over the final hour. This volition make it easier to locate the newer events. Correct click the Directory Service log and cull Clear log. Then perform hallmark attempts.
Subsequently LDAP Events take been generated they tin be pieced together to isolate the cause of the authentication failure as described below.
Bad passwords (Admin or User)
When all users are unable to authenticate to the splash page, it is most likely a bad admin credentials. If some users are able to authenticate and so it is probably bad user credentials. Either style the test widget tin be used to decide if the admin or the user countersign is invalid. In the Windows Event log, the SID of the account using the bad password will exist shown in a event 1174. If the Active Directory admin password or the user business relationship countersign is incorrect you lot will run across Events in the post-obit guild.
- Events 1138 and 1139 always appear when a LDAP search occurs, as shown below.
- When a bad password is entered, an Effect 1174 will immediately follow, showing the SID of the account that attempted to apply a bad password.
Y'all can utilize the SID specified in the 1174 Event and lucifer information technology to the user object (Admin or user) backdrop in Active Directory Users and Computers.
- Event 1535 volition announced after the 1174 and tell you an LDAP error occurred.
- Event 1215 shows the LDAP client closed the connection.
Whichever account SID was specified in the 1174 event is the one that had a bad password. Make sure to apply the correct password and try again.
Agile Directory Admin business relationship name is invalid
If the Agile Directory admin proper name is invalid or does not be in the directory all users will fail to cosign through the splash page and the test widget volition written report "bad admin password" (previously shown). A1174 event will not appear because the initial demark asking failed. You will see Events 1138 then 1139immediately followed by a 1535 LDAP mistake event (previously shown). Finally the LDAP client will close the connection resulting in a 1215 event. In this case, verify the account exists in Active Directory. Try using the UPN i.e. ambassador@mydomain.local or but the sAMAccountName i.east. administrator without a prefix or suffix.
Login username is invalid
If the user account logging into the splash page does not exist in the directory, the username is existence entered incorrectly, or the Admin account does not have access to OU containing the user, an LDAP search volition consummate successfully with no error based Events. Events 1138 and 1139 volition be logged when a successful LDAP search has occurred, all the same a "bad user countersign" (previously shown) will appear in the test widget and the Sign-on Splash page will alert Access denied. In this case, verify the user account name is valid and that the admin account has read access to the OU containing the user.
Testing LDAP
Once the configuration above has been completed, the Meraki device should exist able to communicate with the Agile Directory server using TLS. If this fails, Microsoft offers the Ldp.exe tool to ensure that the LDAP service is running and compatible with the current certificate.
Please reference Microsoft documentation for error code details and troubleshooting assistance.
Source: https://documentation.meraki.com/MR/MR_Splash_Page/Troubleshooting_Active_Directory_Authentication_issues_with_Splash_Page_using_Windows_Event_Viewer
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