How can I check if a specific port is reachable from my location?

How can I check if a specific port is reachable from my standpoint using Windows?

In many cases, it's important to know whether a specific port on a remote system is reachable. There are various ways to check this:

Download mbCHECK from our download portal: → https://mbconnectline.com/en/downloadportal/
Unzip the files into a separate folder
Run the mbCHECK.exe file
Click on [Start Checkup]. You will receive an output similar to the following:

If the test result is negative, please also refer to the following article: → mbDIALUP and mbCHECK have recently reported a closed port. What is the cause?

Notes on the output:

The red-marked note in the last line is simply an indication that it's generally better to use a DNS name instead of an IP address
If any of the three ports 80 / 443 / 1194 is not reachable, a router can still establish a VPN connection, it just needs to be configured for one of the open ports.

Configuration notes:

In the download portal, you can find pre-configured versions for Europe and America. You can also configure mbCHECK on your server. Please refer to the file Please_zuerst_lesen.txt found in the same folder as the mbCHECK.exe file.

If mbCHECK is not available or if you want to test with any targets / ports, you can use Windows Powershell.

Start Windows Powershell
- For example, like this
- Click on the Windows icon
- Type the letters: power
- Windows will offer the following result: : Click on it.
- Wait for the Powershell window to open
To check if Port 1194 is reachable on the V1 server in Europe, type:
Test-NetConnection 5.39.123.4 -Port 1194
During the test, you will see an output similar to the following:
If the port is reachable, the result will show "True":
If the server is reachable but the port is closed:
If the server is not reachable: