Secure AdminServer and managed servers(OSB) using the administration port does not work

 Hi,
Questions : 

Why does it try on I.P xx.xx.xx.150? This cannot works because the AdminServer is not installed on the two nodes of the Windows Cluster (whose address is xx.xx.xx.150). 

Why does it not connect on xx.xx.xx.14:9002? I telnet the address from my server and it works.

Why can I see I.P address on logs ? All the configuration use domain name or server name, not I.P address?

Is there a parameter I have to change in the console to allow osb_server2 to reach the AdminServer using the administration port? 

The session replication between osb_server1 and osb_server1 is not secured? Is it a problem? Does particular informations such as passwords or business data are transported on this non-secured channel?s