Web OS 10.0 Application GuideChapter 10: Health Checking n 239212777-A, February 2002RADIUS Server Health ChecksThe Remote Authentication Dial-In User Service (RADIUS) protocol is used to authenticatedial-up users to Remote Access Servers (RASs) and the client application they will use duringthe dial-up connection. RADIUS Content Health Check Enhancementso Include the switch IP as the Network-attached storage (NAS) IP parameter in theRADIUS content health checko RADIUS health check using the configured real server port (rport)o Variable-length RADIUS secret password. Supports less than 16 octets and up to 32octets The secret value is a field of up to 32 alphanumeric characters used by the switch toencrypt a password during the RSA Message Digest Algorithm (MD5) and by theRADIUS server to decrypt the password during verification. The content option specifies the username:password value that the server tries tomatch in its user database. In addition to verifying the user name and password, the data-base may specify the client(s) or port(s) the user is allowed to access.N OTE – Network-attached storage (NAS) is hard disk storage that is set up with its own net-work address rather than being attached to the department computer that is serving applicationsto a network’s workstation users. By removing storage access and its management from thedepartment server, both application programming and files can be served faster because theyare not competing for the same processor resources. The network-attached storage device isattached to a local area network (typically, an Ethernet network) and assigned an IP address.File requests are mapped by the main server to the NAS file server.Configuring the Switch for RADIUS Server Content Health ChecksThe Alteon Web switch will provide the NAS IP parameter while performing RADIUS contenthealth checks. The switch uses the IP address of the IP interface that is on the same subnet asthe RADIUS server or the default gateway as the NAS IP.The RADIUS health check is performed using the configured real server port (rport). Toconfigure RADIUS health checks, use the /cfg/slb/virt <#>/service menu.
