Configuring CNA Bypass for iOS Terminals

The iOS operating system provides the Captive Network Assistant (CNA) function. With the CNA function, the iOS terminals (including iPhone, iPad, and iMAC) automatically detects wireless network connectivity after associating with a wireless network. If the network connection cannot be set up, the iOS terminals ask users to enter user names and passwords. If users do not enter the user names and passwords, the iOS terminals automatically disconnect from the wireless network.

However, Portal authentication allows users to access certain resources before authentication is successful. If the iOS terminals are disconnected, users cannot access the specified resources. The CNA bypass function addresses this problem. If the users do not enter user names and passwords immediately, the CNA bypass function keeps the iOS terminals online before the Portal authentication is successful. Therefore, the iOS users are allowed to access authentication-free resources.

This function is supported only by S5730-HI, S5731-H, S5731S-H, S6730-H, S6730S-H, S5732-H, S6720-HI, and S5720-HI.