Port 389 — LDAP

Lightweight Directory Access Protocol. Used for directory services like Active Directory.

Is Port 389 Open on Your Server?

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Port 389 Details

Port389
ServiceLDAP
ProtocolTCP
EncryptedNo
Common UseLightweight Directory Access Protocol

How to Check Port 389

Online: Use our Port Scanner — enter your IP and port 389.

Command line:

nc -zv your-server-ip 389 (Mac/Linux)

Test-NetConnection -ComputerName your-server-ip -Port 389 (PowerShell)

Check locally:

ss -tlnp | grep :389 (Linux)   netstat -an | findstr :389 (Windows)

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