1] Shutdown the processes on the middleware and monitored host. To stop/start the processes, you need to go to 'stealth home/agents/bin' and issue:
2] Locate the Launch_Config file, this should be in the following location: <install dir>\pa_agent\3566\agents\launch_conf.
3] Change the value from server.arch call.again to server.arch call.tunnel.
4] Restart the launcher on the middleware:
5] Change the value as above on the Monitored Host, and restart the launcher on the Monitored Host.