FredBainbridge

Firewall Port Requirements for Active Directory Domain Controller

This is a useful list of ports and services to account for when configuring the firewall on a domain controller. This is simply for activity between the DC and clients.

TCP 88 (Kerberos)

TCP 139 (NetBIOS)

TCP 389 (LDAP)

TCP 445 (CIFS)

TCP 3268 (Global Catalog)


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