Enabling portal authentication
You must first enable portal authentication on an access interface before it can perform portal authentication for connected clients.
With portal authentication enabled, the device searches for a portal authentication server for a received portal packet according to the source IP address and VPN information of the packet.
If the packet matches a locally configured portal authentication server, the device regards the packet valid and sends an authentication response packet to the portal authentication server. After a user logs in to the device, the user interacts with the portal authentication server as needed.
If the packet does not match a portal authentication server, the device drops the packet.