// REFERENCE
Port 389 (LDAP)
Protocol: TCP/UDP
Service: LDAP
High risk
LDAP: directory queries (users, groups), the base of Active Directory. Unencrypted on 389; its TLS version is LDAPS (636). Exposed it allows enumerating the whole directory.
Related tools
Work with this in:
Related
53
Port 53 (DNS) 88
Port 88 (Kerberos) 636
Port 636 (LDAPS) 43
Port 43 (WHOIS) 853
Port 853 (DNS over TLS) 3268
Port 3268 (AD Global Catalog)
Port 53 (DNS) 88
Port 88 (Kerberos) 636
Port 636 (LDAPS) 43
Port 43 (WHOIS) 853
Port 853 (DNS over TLS) 3268
Port 3268 (AD Global Catalog)
Assignments per the IANA port registry. Educational content.