What is the default port for Active Directory?
Active Directory
| Client Ports | Server Port | Protocol |
|---|---|---|
| 1024-65535/TCP | 1723/TCP | PPTP |
How do I check if port 139 is open?
For test the port 139, please try use the IP address of the server, NetBIOS or FQDN. You can use the telnet command or PortQuery tools.
What ports should be open on domain controller?
3 Answers
- UDP and TCP Port 135 for domain controllers-to-domain controller and client to domain controller operations.
- UDP Port 389 for LDAP to handle normal queries from client computers to the domain controllers.
- TCP and UDP Port 464 for Kerberos Password Change.
What ports are required for Active Directory replication?
More Info:
| Port | Use |
|---|---|
| 88 | Kerberos |
| 135 | TCP for RPC, EPM (Replication) |
| 389 | TCP, UDP for LDAP (Directory, Replication, User and Computer Authentication, Group Policy, Trusts) |
| 445 | TCP, UDP for SMB, CIFS, SMB2, DFSN, LSARPC, NbtSS, NetLogonR, SamR, SrvSvc (Replication, User and Computer Authentication, Group Policy, Trusts) |
How do I enable TCP port 139?
Step 1: Open the Control Panel Step 2: Click on Windows Firewall/ Windows Defender firewall Step 3: Navigate to advanced settings. Step 4:Right click on inbound rules and click on new rule. Step 6:Select port and press next Step 7:Specify the port 139 under specific local ports, select TCP and press next.
Should I open port 139?
If you are on Windows-based network that is running NetBios, it is perfectly normal to have port 139 open in order to facilitate that protocol. If you are not on a network using NetBios, there is no reason to have that port open.
What is TCP 139 used for?
Port 139 is utilized by NetBIOS Session service. Enabling NetBIOS services provide access to shared resources like files and printers not only to your network computers but also to anyone across the internet.