It’s annoying when I am working on my computer and suddenly, for no apparent reason, I couldn’t connect to our internet. Besides being annoying, such problems can entail great security risks, vulnerability to data theft, fraud, malware downloads on your equipment and even criminal acts under your Internet account.
The first thing to do is protect your home network by configuring your wireless router to use WPA or WPA-2. This procedure may vary according to your service provider; it is necessary to read the instructions in the documentation for your router.
Then create a strong password to share your connection with every computer, smartphone, Blu-ray player or other device equipped with Wi-Fi in your home, including laptops or smartphones for your visitors.
How to know if there is an intruder on your network?
In the program settings of your router, probably in a menu called Wireless or Status, is a list of current wireless clients. You may not recognize these customers at first, but you will see how many there are.
If you think there are too many, think about what devices may be legitimately using your Wi-Fi. Right now, my router tells me I have five wireless clients. I could only identify four. As it turns out, my daughter’s iPhone had Wi-Fi on.
You can identify customers through their MAC addresses. These numbers are unique to each device that can enter a network. You can go to the Wi-Fi clients and find legitimate MAC addresses, but the method for doing this varies with each device. On a PC running Windows, go to the Command Prompt window and type ipconfig / all followed by Enter. The MAC address is listed under “Physical Address.”
If you want to investigate how your network was exposed to intruders, setup your router must include some kind of record.
Stopping the theft of network
The easiest way to stop network theft is enabling the router with a filter which selects among registered MAC addresses and exclude the unknown, disabling access to those who have not been marked as safe.
We also recommend that you install the Zamzom Wireless Network Tool, which detects the networks that are connected to your wifi for who can give permission to contact your network and block the unknown IP.