Hi Zafar,
I found out what is root of the problem. The PAM server has two NICs. NIC1 is connected to APP VLAN where other servers like Service Catalog, SDM, etc are running. NIC2 is connected to DB VLAN where SQL server runs. For some reason PAM services are bind only to NIC2. When I'm trying to connect to PAM from Service Catalog server my connection goes to NIC1 and there is no response. I don't know how to bind PAM service to all NICs or re-bind them to NIC1. Service Catalog has its services bind to both NICs automatically. I've searched in PAM config files but there was only the one domain.xml file where was set IP address. I corrected the record to NIC1 but no change happened after PAM service restart. Other config files contain only server name of PAM. I tried to re-order NIC bindings in Windows (Network connections-Advanced Settings) but PAM still uses only NIC2 interface.
Any help how to re-bind PAM services?.
Thank you Milan