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How to check if WSUS server ports are accessible from the client?

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To check if WSUS server ports are accessible from the client, you can perform a simple network connectivity test using various tools available on Windows. Here are the steps to check the accessibility of WSUS server ports:

  1. Ping the WSUS Server:

     

    • Open the Command Prompt on the client computer.
    • Type the following command and replace "wsus-server-ip" with the IP address or hostname of your WSUS server:
    •  
    •  
      ping wsus-server-ip
    •  
    • Press Enter to send the ping request. If the server is reachable, you should see replies from the server.
    •  

  2. Test Port Connectivity using Telnet:

     

    • Telnet is a command-line tool that can test the accessibility of a specific port on the server.
    • Open the Command Prompt on the client computer.
    • Type the following command and replace "wsus-server-ip" with the IP address or hostname of your WSUS server, and "port-number" with the port you want to test (e.g., 8530 for HTTP, 8531 for HTTPS in WSUS):
    •  
      typescript
      telnet wsus-server-ip port-number
    • Press Enter to initiate the connection. If the port is accessible, you will see a successful connection message. Otherwise, you may get an error indicating that the connection was refused or timed out.
    •  

  3. Use Test-NetConnection (PowerShell):

     

    • On Windows systems, you can use PowerShell to perform a network connectivity test.
    • Open PowerShell as an administrator on the client computer.
    • Type the following command, replacing "wsus-server-ip" and "port-number" as described earlier:
    • typescript
      Test-NetConnection -ComputerName wsus-server-ip -Port port-number
    • Press Enter to execute the command. The output will indicate whether the port is reachable or not.
    •  

  4. Windows Firewall Rules (Server Side):

     

    • Ensure that the necessary ports (typically port 8530 for HTTP and port 8531 for HTTPS) are open on the WSUS server's firewall to allow incoming connections from client computers.

If the tests show that the WSUS server ports are not accessible from the client, it indicates a network connectivity issue that needs to be addressed. Possible reasons include firewall rules blocking the connection, incorrect port settings, or network routing problems. You may need to work with your network administrator to resolve these issues and ensure proper communication between the client and the WSUS server. If you want to help from us mail on the contact page . 

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