Port 636 — LDAPS

LDAP over SSL. Encrypted directory services.

Is Port 636 Open on Your Server?

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Port 636 Details

Port636
ServiceLDAPS
ProtocolTCP
EncryptedYes (TLS/SSL)
Common UseLDAP over SSL

How to Check Port 636

Online: Use our Port Scanner — enter your IP and port 636.

Command line:

nc -zv your-server-ip 636 (Mac/Linux)

Test-NetConnection -ComputerName your-server-ip -Port 636 (PowerShell)

Check locally:

ss -tlnp | grep :636 (Linux)   netstat -an | findstr :636 (Windows)

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