Network Ports Used by Active Directory Replication
RPC 135
LDAP UDP 389 TCP 389
LDAP (Secure Sockets Layer [SSL]) TCP 336
LDAP (Global Catalog) TCP 3268
Kerberos UDP 88 TCP 88
DNS UDP 53 TCP 53
SMB over IP (Direct Hosting) UDP 445 TCP 445
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RPC 135
LDAP UDP 389 TCP 389
LDAP (Secure Sockets Layer [SSL]) TCP 336
LDAP (Global Catalog) TCP 3268
Kerberos UDP 88 TCP 88
DNS UDP 53 TCP 53
SMB over IP (Direct Hosting) UDP 445 TCP 445