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Advanced Configuration AP-4000 Series User Guide
Radius Profiles
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• Destination Port: Enter the port number which the AP and the server will use to communicate. By default,
RADIUS servers communicate on port 1812.
• Server VLAN ID: Indicates the VLAN that uses this RADIUS server profile. If VLAN is disabled, this field will be
grayed out.
• Shared Secret and Confirm Shared Secret: Enter the password shared by the RADIUS server and the AP. The
same password must also be configured on the RADIUS server. The default password is “public.”
• Response Time (seconds): Enter the maximum time, in seconds, that the AP should wait for the RADIUS server
to respond to a request. The range is 1-10 seconds; the default is 3 seconds.
• Maximum Retransmissions (0-4): Enter the maximum number of times an authentication request may be
transmitted. The range is 0 to 4, the default is 3.
• Server Status: Select Enable from the drop-down box to enable the RADIUS Server Profile.
3. Click OK.
4. Select the Profile and click Edit to configure the Secondary RADIUS Server, if required.
MAC Access Control Via RADIUS Authentication
If you want to control wireless access to the network and if your network includes a RADIUS Server, you can store the list
of MAC addresses on the RADIUS server rather than configure each AP individually. You can define a RADIUS Profile
that specifies the IP Address of the server that contains a central list of MAC Address values identifying the authorized
stations that may access the wireless network. You must specify information for at least the primary RADIUS server. The
back-up RADIUS server is optional.
NOTE: Each VLAN can be configured to use a separate RADIUS server (and backup server) for MAC authentication.
MAC access control can be separately enabled for each VLAN.
NOTE: Contact your RADIUS server manufacturer if you have problems configuring the server or have problems using
RADIUS authentication.
802.1x Authentication using RADIUS
You must configure a primary EAP/802.1x Authentication server to use 802.1x security. A back-up server is optional.
NOTE: Each VLAN can be configured to use a separate RADIUS server (and backup server) for 802.1x authentication.
802.1x authentication (“EAP authentication”) can be separately enabled for each VLAN.
RADIUS Accounting
Using an external RADIUS server, the AP can track and record the length of client sessions on the access point by
sending RADIUS accounting messages per RFC2866. When a wireless client is successfully authenticated, RADIUS
accounting is initiated by sending an “Accounting Start” request to the RADIUS server. When the wireless client session
ends, an “Accounting Stop” request is sent to the RADIUS server.
NOTE: Each VLAN can be configured to use a separate RADIUS accounting server (and backup accounting server).
Session Length
Accounting sessions continue when a client reauthenticates to the same AP. Sessions are terminated when:
• A client disassociates.
• A client does not transmit any data to the AP for a fixed amount of time.
• A client is detected on a different interface.
• Idle-Timeout or Session-Timeout attributes are configured in the Radius server.
If the client roams from one AP to another, one session is terminated and a new session is begun.