HP-UX AAA Server A.08.01 administrator's guide (T1428-90072, May 2010)

Table Of Contents
{
if( (count(User-Name) > 0) && substr(User-Name after "@") = "<realm>" )
{
modify Interlink-Proxy-Target = "<Hostname or IP Address of Proxy Target Server>"
}
}
Configuring on the Basis of NAS
To configure routing tables based on NAS (authenticator), add the following lines in
the /etc/opt/aaa/proxy-egress.grp file:
if( Interlink-Packet-Code = "Disconnect-Request" ||
Interlink-Packet-Code = "COA-Request" )
{
if( count(NAS-Identifier) > 0 && NAS-Identifier = "<DNS name of NAS>" )
{
modify Interlink-Proxy-Target = "<Hostname or IP Address of Proxy Target Server>"
}
}
NOTE: The HP-UX AAA Server configuration must include all the remote proxy
servers that forward messages to or receive forwarded messages from this HP-UX AAA
Server. If a remote proxy server is not included in the configuration, the server does
not handle or forward requests to it. The Proxies screen in the HP-UX AAA Server
Manager allows you to add, modify, or delete a remote proxy server in the server
configuration. For information on how to configure Proxies, see Chapter 9 (page 117).
Configuring for Failover
The HP-UX AAA Server supports failover functionality for dynamic authorization
requests. You can configure a secondary server to which the requests must be sent in
case the primary server fails to respond.
To configure a secondary server, add the following lines in the /etc/opt/aaa/
client-request-egress.grp file:
insert Client-Request-Secondary-Server = <hostname or IP address of secondary server>
Security Consideration in Dynamic Authorization
This section describes the security features in Dynamic Authorization. The following
features are supported:
“Replay Protection” (page 321)
“Message-Authenticator” (page 324)
“Reverse Path Forwarding Check for Proxies” (page 324)
Replay Protection
The Replay Protection feature protects the network from fraudulent transmissions
using valid data. The Event-Timestamp attribute is used for enforcing replay
protection. The HP-UX AAA Server discards all incoming messages if the
Event-Timestamp value is not within acceptable time limits. You can configure the
time window using the event_timestamp_window attribute in the aaa.config
Configuring for Dynamic Authorization 321