// REFERENCE
Port 636 (LDAPS)
Protocol: TCP
Service: LDAPS
Medium risk
LDAP over TLS: the encrypted version of 389, used by Active Directory. Seeing it flags a directory; exposed to the Internet it still allows enumeration and credential attacks.
Related tools
Work with this in:
Related
53
Port 53 (DNS) 88
Port 88 (Kerberos) 389
Port 389 (LDAP) 43
Port 43 (WHOIS) 853
Port 853 (DNS over TLS) 3268
Port 3268 (AD Global Catalog)
Port 53 (DNS) 88
Port 88 (Kerberos) 389
Port 389 (LDAP) 43
Port 43 (WHOIS) 853
Port 853 (DNS over TLS) 3268
Port 3268 (AD Global Catalog)
Assignments per the IANA port registry. Educational content.