Port 389 — LDAP
Lightweight Directory Access Protocol — queries directory services like Active Directory.
| Port number | 389 |
|---|---|
| Service | LDAP |
| Transport | TCP/UDP |
| Category | Directory |
Is port 389 safe?
Plaintext unless LDAPS (636); can expose org structure.
Frequently asked questions
What is port 389 used for?
Port 389 (TCP/UDP) is the standard port for LDAP. Lightweight Directory Access Protocol — queries directory services like Active Directory.
Is port 389 safe to open?
Plaintext unless LDAPS (636); can expose org structure.
Is port 389 TCP or UDP?
Port 389 commonly uses TCP/UDP.