HP Systems Insight Manager - Manual (Page 170)

In the above example, 10.1.1.1 is the host running HP SIM and 10.1.2.3 is the host running the
authenticator.
Also note that if the value of “proxy.auth.request.url” parameter needs to be overridden by the
URL parameter, then launch HP SIM with the complete URL.
https://10.1.1.1:50000/?isProxyAuth=1&proxy.auth.request.url=https://10.1.2.3/token/
12398738273127317178127912739731273739127937123719371371893718937197319173
170 Proxy authenticator