Does AT&T Wi-Fi implement a firewall?
AT&T Wi-Fi service implements a firewall as an integral part of the AT&T Wi-Fi Welcome Page. Once the network authentication process on this page is complete, no information is restricted, monitored, or blocked. Until you go through our AT&T Wi-Fi Welcome Page, you will only be able to access the AT&T Wi-Fi Web site or www.att.com. Any attempts to access Internet sites will be automatically redirected to our AT&T Wi-Fi Welcome Page until you have been authenticated on the Welcome Pages.