R2511-HP MSR Router Series Security Configuration Guide(V5)

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Solution
1. Use the display portal server command to display the key for the portal server on the access device
and view the key for the access device on the portal server.
2. Use the portal server command to modify the key on the access device or modify the key for the
access device on the portal server to ensure key consistency.
Incorrect server port number on the access device
Symptom
You cannot use the portal delete-user command on the access device to log out a portal user, but the
portal user can log out by clicking the Disconnect button on the portal authentication client.
Analysis
When you execute the portal delete-user command on the access device to log out a user, the access
device sends an unsolicited logout notification message to the portal authentication server. The
destination port number in the logout notification is the listening port number of the portal authentication
server configured on the access device. If this listening port number is not the actual listening port number
configured on the server, the server cannot receive the notification. As a result, the server does not log out
the user.
When a user uses the Disconnect button on the authentication client to log out, the portal authentication
server sends an unsolicited logout request message to the access device. The access device uses the
source port in the logout request as the destination port in the logout ACK message. As a result, the portal
authentication server can definitely receive the logout ACK message and log out the user.
Solution
1. Use the display portal server command to display the listening port of the portal authentication
server configured on the access device.
2. Use the portal server command in system view to change the listening port number to the actual
listening port of the portal authentication server.