Windows/ad used firewall ports: Difference between revisions

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Latest revision as of 10:41, 16 April 2026

Here’s the list with an explanation of each port:

 

Protocol and Port

AD and AD DS Usage Type of traffic  
TCP 25 Replication SMTP
TCP 42 If using WINS in a domain trust scenario offering NetBIOS resolution WINS
TCP 135 Replication RPC, EPM
TCP 137 NetBIOS Name resolution NetBIOS Name resolution
TCP 139 User and Computer Authentication, Replication DFSN, NetBIOS Session Service, NetLogon
TCP and UDP 389 Directory, Replication, User and Computer Authentication, Group Policy, Trusts LDAP
TCP 636 Directory, Replication, User and Computer Authentication, Group Policy, Trusts LDAP SSL
TCP 3268 Directory, Replication, User and Computer Authentication, Group Policy, Trusts LDAP GC
TCP 3269 Directory, Replication, User and Computer Authentication, Group Policy, Trusts LDAP GC SSL
TCP and UDP 88 User and Computer Authentication, Forest Level Trusts Kerberos
TCP and UDP 53 User and Computer Authentication, Name Resolution, Trusts DNS
TCP and UDP 445 Replication, User and Computer Authentication, Group Policy, Trusts SMB, CIFS, SMB2, DFSN, LSARPC, NbtSS, NetLogonR, SamR, SrvSvc
TCP 9389 AD DS Web Services SOAP
TCP 5722 File Replication RPC, DFSR (SYSVOL)
TCP and UDP 464 Replication, User and Computer Authentication, Trusts Kerberos change/set password
     
UDP 123 Windows Time, Trusts Windows Time
UDP 137  User and Computer Authentication NetLogon, NetBIOS Name Resolution
UDP 138 DFS, Group Policy, NetBIOS Netlogon, Browsing DFSN, NetLogon, NetBIOS Datagram Service
UDP 67 and UDP 2535 DHCP (Note: DHCP is not a core AD DS service but these ports may be necessary for other functions besides DHCP, such as WDS) DHCP, MADCAP, PXE
 

 

The Short list without port explanations:

 

Protocol Port
TCP 25
TCP 42
TCP 135
TCP 137
TCP 139
TCP and UDP 389
TCP 636
TCP 3268
TCP 3269
TCP and UDP 88
TCP and UDP 53
TCP and UDP 445
TCP 9389
TCP 5722
TCP and UDP 464
UDP 123
UDP 137
UDP 138
UDP 67
UDP 2535
TCP & UDP 1024-5000
TCP & UDP

49152-65535