What is port 135 primarily used for?

Port 135 is the RPC Endpoint Mapper service. It is a service that allows other systems to discover what services are advertised on a machine and what port to find them on. It is mostly associated with remote access and remote management.

What ports does RPC use?

By default, RPC uses ports in the ephemeral port range (1024-5000) when it assigns ports to RPC applications that have to listen on a TCP endpoint. This behavior can make restricting access to these ports challenging for network administrators.

What ports are required to join a domain?

At a minimum, they must listen on these required ports: UDP Port 88 is required for authentication purposes. UDP Port 88 is used by clients and domain controllers to authenticate with each other. Both UDP and TCP Port 135 are required for communication between domain controllers and clients to domain controllers.

How do I find out my domain controller?

To find the exact domain controller information we use few set of commands that is listed below. Step-1: Open run command by pressing Windows plus R key. Step-2: Type echo %logonserver% and press Enter. Step-3: The above command will list out the domain controller name to which your computer is getting authenticated.

What ports are required for Active Directory?

Domain controllers, client computers and application servers require network connectivity to Active Directory over specific hard-coded ports. Additionally, unless a tunneling protocol is used to encapsulate traffic to Active Directory, a range of ephemeral TCP ports between 1024 to 5000 and 49152 to 65535 are required.

What DC Am I connected to?

Use Command Prompt to find out which DC your system is connected to. Press “Windows-Q” to go to the Apps screen, type “cmd.exe” into the search bar, and then press “Enter” to run Command Prompt. Type “set l” (without quotation marks) into the console, and then press “Enter” to execute the command.