Configuration Guide WEB Authentication Configuration
Networking Topology
Figure 4 Networking topology for web authentication solution
The user PCs are connected to the access devices, whose upstream ports are connected to the
convergence device. The convergence device is connected to the core device, which allows the
user PCs to access the Internet.
The servers are deployed in the server area and they are connected to the core device through an
internal network.
PC1 and PC2 obtain the IP addresses 192.168.4.11 and 192.168.4.12 from the DHCP server,
respectively. The IP address of the gateway serving PC1 and PC2 is 192.168.4.1.
The domain name of the Portal server is www.web_auth.com, which can be resolved by the internal
DNS server. The URL of the web authentication page is
http://www.web_auth.com/webportal/index.jsp. If no internal DNS server is deployed, go to the
preceding URL to configure the IP address of the web authentication server.
The SAM server works as the Radius server, which provides the authentication and charging
services.
A public server is available in the server area and it can be accessed without authentication.
Configuration Tips
After web authentication is enabled on a port, the DHCP and DNS packets sent from
unauthenticated users connected to the port can pass through the port. The users obtain IP
addresses, and domain names are resolved normally.
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