Wi-Fi Security is the security infrastructure put in place on a wireless network or wireless connectivity to the Internet. Wi-Fi Security functions are commonly accessed by end-users through a modem or router’s configuration settings. Wi-Fi Security ultimately protects a wireless network from unauthorized access. Wi-Fi Security software can be used to prevent or monitor access to a wireless network. Firewalls are also considered to be a type of Wi-Fi Security, which prevents access to a wireless network except to those who are authorized users. Wi-Fi Security is essential when utilizing a wireless network in virtually any public environment.