"SoftPerfect WiFi Guard" free software that monitors unknown PCs at regular intervals so as not to use wireless LAN
It can also be used on Mac and Linux, scanning at regular intervals, when an unknown PC connects to the LAN it is using, the free software warning me with a popup is "SoftPerfect WiFi Guard"is. The firewall can also detect devices that do not respond to Ping, Windows 2000 or later is compatible, Mac OS 10.5 or later, Linux GTK + 2.8 or higher is also supported.
Downloading, installing, setting, operating method is as follows.
SoftPerfect WiFi Guard: keep your WiFi secure
Go to the bottom of the above site and install software on Windows, so select "Windows: Installation Package (1.7 M)" and click "Download WiFI Guard".
Run the downloaded installer.
Please check above and click "Next"
The setting screen will be displayed.
Select the network adapter you are using. You can also set the number of devices to scan at one time, the time interval to start rescanning, notification location, resident status, automatic update here.
On the "Advanced" tab, you can set the range of IP addresses to be scanned. Click "OK" when setting is completed.
The operation screen is displayed.
To scan immediately, click "Scan Now".
If you are connected to the Internet with a mobile router, you will be warned by a popup as a device that does not know the mobile router as follows, so click "×". If an unknown device connects to the LAN, it will be warned by a popup as follows.
The detected device is displayed on the operation screen.
Unknown devices are distinguished in red, devices with no problem are in green.
To change the unknown device to a device without problems, click on the device to be changed and click "Properties".
Please check at the bottom and click "OK"
This changes from red to green, and it has been changed to a device without problem.
Also, to save the information displayed on the operation screen, click "Save ..." from "File".
To change the display of the MAC address, select display from "MAC address format" in "View" is OK.