Usually wireless routers are usually secured by WAP . There is a router that has this security mode turned on and is available in a series of letters and numbers. More or less characters depend on the level of security being 64 bits or 128 bits. Having a router by default turns off security mode so any device with wireless support within coverage can access the network. To be safe, you must turn this mode on and create a sequence of characters. This sequence of characters is called a key, other computers that want to enter this WLAN must enter the correct key. Configurations, addresses, and password names are usually set by the manufacturer's default manufacturer. For Linksys products, the parameters are Linksys http://192.168.1.1 , Username admin , Password admin .
How to set a password for Wireless Picture 1Another way is to use the MAC address . All networked devices have a unique 12-character string used as an identifier for each device, from a specialty called a MAC (Media Access Control) address. In order for the system to work more securely, only networked devices that have a certain number of MAC registrations will have access to the system. The MAC address list of wireless network devices used in the network is declared through the Access Point administration software. In Windows XP, the procedure to determine the MAC address of the network device is as follows: First, click on the Start bar, select Run and enter the cmd command line and finish by clicking OK. In the DOS window of the cmd utility, enter the command line ipconfig / all (note that between ipconfig and / all there is a space separator), press the Enter key again. After the ':' sign of the Physical Address message line is the MAC address of the network device.
In addition, you can go to the router to disable the broadcast, do not let strangers scan your network IP, set fixed IP for your machines and the router only receives those IPs.