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🟢Active Directory Service and Port Numbers

Active Directory (AD) is a crucial component of Microsoft Windows-based networks, providing centralized management and authentication services. To facilitate its seamless operation...

Port NumberProtocolService/Description

389

TCP/UDP

Lightweight Directory Access Protocol (LDAP)

636

TCP

LDAPS (LDAP over SSL)

3268

TCP/UDP

Global Catalog (LDAP)

3269

TCP

Global Catalog (LDAPS)

53

TCP/UDP

DNS (Domain Name System)

88

TCP/UDP

Kerberos authentication

445

TCP

SMB (Server Message Block)

135

TCP

RPC (Remote Procedure Call)

139

TCP/UDP

NetBIOS Session Service

3260

TCP

iSCSI (Internet Small Computer System Interface)

53

TCP/UDP

DNS (Domain Name System)

137-139

TCP/UDP

NetBIOS Name Service

389

TCP/UDP

LDAP (Lightweight Directory Access Protocol)

53

TCP/UDP

DNS (Domain Name System)

445

TCP

SMB (Server Message Block)

636

TCP

LDAPS (LDAP over SSL)

3268

TCP/UDP

Global Catalog (LDAP)

3269

TCP

Global Catalog (LDAPS)

88

TCP/UDP

Kerberos authentication

135

TCP

RPC (Remote Procedure Call)

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