At all the convenience of Wi-fi the connection is the most vulnerable for unauthorized connection. But it can be protected rather reliably by means of standard means of the router and certain settings.
Instruction
1. By means of the Ethernet cable connect Wi-Fi the router to the personal computer. On the router at the same time the indicator which signals about connection on a local area network should light up. Further start any program the browser to turn into settings of the router. For this purpose it is necessary to enter address 192.168.1.1 into an address bar (sometimes 192.168.0.1). In the program in case of successful connection the dialogue window in which it is necessary to specify the password and the login for an input should appear. By default these parameters are set as ""admin"" and ""admin"". In a window of settings of the router select the Security tab.
2. The most reliable way to protect wireless connection is installation of the password. For this purpose at first it is necessary to select encryption type which the router will apply. In the household purposes the specialists recommend to use WPA encryption. As the password use an accidental set of digits, letters and characters which will be quite difficult to be cracked. You should not use a surname, the phone number and date of birth as the password, such data easily give in to selection or cracking. Enter the password on all devices which you plan to connect to house Wi-Fi and to avoid excess inconveniences, make so that they were connected automatically.
3. In addition to use of the password, the wireless network can also be protected imposition of the restriction on the number of clients of network. That is if in your house only two computers use Wi-Fi connection continuously, you can set restriction for two clients, and more nobody will be able to be connected to this network. It is possible to make it also in settings of the router. However consider if one of devices for any reasons is switched-off from network, to be connected to "the free slot" it will turn out at anyone. Therefore this method by the efficiency will not be compared to the password.