If you are somebody who is concerned about your security, then this article is definitely for you. We all know how easy it is to hack a system these days because hackers usually exploit the loopholes found in them. This makes it important for us to keep our systems safe and secure at all times. To help make your computer more resistant to malicious software, what you can do is to check UDP port open on your machine. By doing this, you will be able to determine if any unknown processes are running that could compromise your PC’s security or steal personal data stored on your machine.
Note that most trojans use the same type of port scans as legitimate programs, such as email servers and web browsers. This makes it even more difficult for you to determine which ones are safe and which ones aren’t.
Below, I will discuss how to check open UDP ports on Windows 10 using the command prompt, so you can have a safer machine.
How to Check UDP Port Open on Windows 10:
Step 1: Firstly, launch the Command Prompt by pressing Windows Key + R, typing cmd in the Run dialog box, and then entering.
Step 2: Once the Command Prompt is launched, type “netsh” without quotes and press enter at the Command Prompt to make sure that we have network services available for this process.
If you get a message saying that Networking Services is not available due to lack of permissions or something, then the first thing you should do is click Continue at the User Account Control screen.
Step 3: Now, as we have confirmed that Networking services are available, type “Wlan” without quotes and press enter. This will give us some detailed information about our Wireless Adapter.
Step 4: Now, we need to find our Local Area Connection number, which you can easily do by reading through each entry and writing down the number of the one with your current network name (You may need to use Get-NetAdapter to make things easier).
In this case, I am using ‘Wi-Fi’ as my wireless adapter (Which changed since Win10 was installed), and my Local Area Connection number is 14.
Step 5: Now that we’ve figured out our Local Area Connection number, type “Netsh WLAN show interfaces” without quotes and hit Enter.
You don’t need to type anything after-show interfaces because it’s already there. This will give us information about your Wireless Network Device.
Step 6: My wireless network adapter has three entries (Interface Names). The one with ‘SSID’ as its name is obviously for the SSID of the wireless network that I’m currently using, and ‘Network Type’ is the type of wireless network (Infrastructure, Ad-Hoc).
The important one here is ‘Connection Information,’ which means that this adapter has an IP address assigned to it.
If you don’t see any ‘Connection Information,’ then check out your DHCP server or manually assign an IP address to your network card (Google search for “How to manually set an IP address on x” where x is your OS and version number).
Step 7: Now that I have confirmed my Local Area Connection number and its properties, I need to find out if UDP ports are open on it.
To find out if UDP ports are open or not, type “Netsh WLAN show services” without quotes at the Command Prompt and hit Enter.
Step 8: My result is that all UDP ports are closed on my wireless network adapter. If your result is the same as mine and you would like to check which ports are opened or not, then just change ‘show services’ to ‘show service,’ which will list all open UDP and TCP ports of your local area connection. Press enter after typing this command, and you should get a list of open UDP and TCP ports related to your Local Area Connection.
Open Ports List: By doing this process multiple times, I was able to find some open UDP ports (Which need further investigation) on my computer while others remain closed no matter how many times I try it again.
So if you want to check for UDP ports that are open on your computer, just type “netsh wlan show service” without quotes at the Command Prompt and hit Enter