I recently noticed that my Wi-Fi speed was inconsistent while using the internet for routine tasks. Unusually, the Wi-Fi speed keeps increasing in speed. It rarely runs and sometimes it runs smoothly as it should. After that, I went to the Wi-Fi security page and discovered that my Wi-Fi was being used by four unauthorised devices (Android, Windows, and iPhone).
Upon closer inspection of the Wi-Fi security page, I discovered that WPS was enabled, which may be the source of my Wi-Fi password leak. I changed the Wi-Fi password right away after turning off WPS mode. This is the method I used to prevent them from connecting again.
Disable WPS
You need to eliminate security flaws in order to stop anyone from connecting to your Wi-Fi network. Disabling WPS (Wi-Fi Protected Setup) is part of it. By going to the security option on your Wi-Fi setup page after logging in, you can disable this. This screenshot shows you how to accomplish it.
This picture shows you my Wi-Fi setup by default. Enable WPS mode is located on the second to last option, which is not active at the moment. You must be aware that not every Wi-Fi security page is the same, so you should always check or use WPS mode, which is typically available on security pages of Wi-Fi setup pages.
Checking Unauthroized Users
One quickest way to find detailed information about unauthorized users is by using external applications that are freely available on Google Play Store and Apple App store. Here’s how to find.
Get the Fing app from the Google Play Store or the App Store for iOS mobile devices. Open the app on your tablet or smartphone after installing it.
The main dashboard will appear when you first launch the Fing app. Just click the “Scan” button or select the “Network” tab to begin a network scan. At that point, Fing will start looking through all of the devices linked to your network.
Following the completion of the scan, Fing will list every device it discovered connected to your WiFi network. The device name, IP address, MAC address, manufacturer, and type are usually included in this list.
Use in-build router setup page
Go to your router’s setup page: Open a web browser on a device connected to your WiFi network. In the address bar, type the IP address of your router. This would normally be either 192.168.0.1 or 192.168.1.1.
Enter Login Credentials: You must enter the login credentials for your router. This information is typically found on a sticker on the router or in the handbook.
Status: Navigate to the status section and select “User Device Information.” A list of all connected devices with their IP address, Mac address, and operating system type will appear.
Now, we are able to find who is using our WiFi. Now let’s look at how we can stop access from unidentified individuals or devices. Each Wi-Fi router is built differently. You can access most of the router setup page by using 192.168.100.1 or 192.168.10.1. We will now use your Wi-Fi setup page to prevent unauthorised users from connecting to our WiFi.
Steps to Block Unauthorized Users
Try accessing the router setup page with any of your browsers, then use your default login and password to log in to the wifi setup page.
Navigate to Security
After logging in, a webpage with details about your Wi-Fi network will appear. Please choose the security option, as shown in the image below.
Use Mac Filter
Right now, choose MAC Filter Configuration. Once you select MAC Filter Configuration, the option to enable mac filter will show up. Then click on “Enable Mac Filter.” By doing this, Mac Address Filtering will be enabled, enabling us to stop unauthorised users from utilising our WiFi.
Both a whitelist and a blacklist will be available. You can grant users unrestricted access to your WiFi by using the whitelist option. We urgently need the blacklist feature. It keeps devices that are either targeted or unauthorised from connecting to our wireless network.
As the example shows, click filter mode and select blacklist. In the source MAC address field, enter the mac address of the device you want to block. The mac address can be found using the FING application or the router configuration page, as was previously mentioned.
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