A proxy server is an agent between a web surfer and the Internet. People choose to use proxies if they want a safer connection or they wish to keep their online identities secret. One of the most common features of proxies is IP address masking. Another common feature of proxies is the caching function. There are proxies that create multiple IP addresses so that a user could visit one and the same site as unspotted. Some proxies are used as caching storage or data filters. WiFi proxies don’t do any of the aforementioned. They don’t change IPs, nor do they filter incoming data. What they do is authenticating public WiFi users and granting them access to the WiFi network. Such proxies are called transparent because a user is not aware of them.