Network Topology
Traditional topology
Problem Description
Portal authentication interface cannot pop up
Process Analysis
- Reachability detection
- Ensure the client is online and obtains an IP address
- Ensure the client can ping the portal server address
- If ping through fails, it indicates that there is a problem with the route from the client to the portal server.
Check the configuration and troubleshoot routing issues；
Check whether the firewall allows access to the IP and port；
Check the authentication server port status；
Check whether the free-rule allows the portal server address to be accessed.
2. DNS Check
- Check whether the authentication page can be popped up normally by directly entering the IP address
- If possible, DNS issue
Check whether DNS is configured.
Check whether the terminal is reachable to the DNS.
> Unreachable, check whether the DNS authentication-free rule is configured (portal free-rule allows the DNS address to be connected);
> Reachable, check whether DNS can resolve the address normally.
3. Redirect Detection
- Directly entering the IP address will not pop up the authentication page.
- Manually enter the portal web server URL address in the browser.
Can be opened normally, redirection problem
> Packet capture;
> debugging portal redirect to see if there is an error.
Cannot open normally
> Whether the client's IP address group is bound normally on the server;
> Whether the portal device on the server is bound to the port group;
> Whether the port group on the server is bound to the correct IP address group;
* Whether the address range of the IP address group is correct.
> Whether portal enable method direct is configured under the service template;
> Whether the device name contains Chinese or special symbols;
> Whether the IMC/Radius configuration takes effect.
Solution
Troubleshooting feedback based on the above steps.