A wireless router is a router for users to access the Internet with wireless coverage.
A wireless router can be viewed as a repeater that forwards the broadband network signals from the home wall to nearby wireless network devices (laptops, wifi phones, tablets, and all devices with WIFI) via the antenna.
The popular wireless routers on the market generally support private xdsl / cable, dynamic xdsl, pptp four access methods, it also has some other network management functions, such as dhcp service, nat firewall, mac address filtering, dynamic domain name and so on The 
Popular wireless routers on the market generally only support 15-20 devices within the same time online use.
The general wireless router signal range is 50 meters radius, and now there are some wireless router signal range reached a radius of 300 meters.
Wireless router and support the encryption function of the wireless card with each other, can encrypt the transmission of data, so that it is difficult for others to steal your information. WEP encryption levels are 40 (64) bits and 128 bits, using 128-bit encryption is more secure. The WEP key can be a set of randomly generated hexadecimal digits, or ASCII characters that are selected by the user. In general we use the latter, by manual input. Each wireless broadband router and wireless workstation must use the same key to communicate. But encryption is optional, and most wireless routers default to disable encryption. Encryption may have an impact on transmission efficiency.
To enable encryption, select the WEP key format for "ASCII characters" and 40 (64) or 128 bit WEP keys in WEP encryption method (mode). In the use of 40 (64) bit encryption mode, you can enter four "to" different WEP key, but the same time can only choose one to use. Each key consists of 10 hexadecimal characters. Stored in the wireless broadband router. By default, select one of the four keys to use. When using 128-bit encryption, enter 26 hexadecimal characters as WEP keys. Only one key can be entered in this case. Some wireless cards can only use the 40 (64) bit encryption method, so you may want to choose a lower encryption level. If all of your clients can support 128-bit encrypted communication, select 128 bits; select 40 (64) bits if there are clients that can only support 40 (64) bits of encrypted communication. To enable encryption, select the encryption type and WEP key for all wireless routers, access points, and workstations on the network. To increase network security, you can change the key frequently. When changing the key used by a wireless device, remember to change the keys for all radio and access points on the network at the same time. Basically, these are all wireless router security settings, presumably we should have a comprehensive understanding of the.