FortiGate Unable to Connect to LDAP Server

[himanshusince1989]

Hello,

I have a pair of 100F firewall configure in HA with Active/Standby and HA dedicated MGMT Revervation is also configured with ha-direct enable. I am tried putting the AD details in the fieldsa and under regular provided the AD Credentials Administrator, and trying to browse DN, but is is always says invalid LDAP Server.

Note : Windows is successfully authenticated to users.

[Abin_FTNT]

Please try :-https://community.fortinet.com/t5/FortiGate/Troubleshooting-Tip-Status-of-LDAP-server-connected-via-IPsec/ta-p/195558

[himanshusince1989]

Thank you for Response, I see that the MGMT interface is no more under root vdom so unable to add the source with DEDICATED MGMT INterface.

What Next

[tbarua]

Hi himanshusince1989,
Can you confirm whether you are able to ping the LDAP server (by IP address or FQDN)?
If yes, could you also share the FortiGate firmware version you are running?

Please note that there is a known issue (1148845) where enabling HA-direct can cause LDAP connectivity problems.
This issue has been resolved starting from FortiOS v7.4.9 and v7.6.4 and later.

If your device is affected, try disabling HA-direct and then reconnecting to the LDAP server to verify if the issue is resolved.

If you have found a solution, please like and accept it to make it easily accessible to others.

thank you,