to quote the Poser 7 ReadMe:

Quote - - New in version 7 is the option to render in a separate process. In order to communicate with the render process, Poser uses sockets. Some personal firewall software mistakenly reports this as an attempted connection to the internet. If you wish to render in a separate process, you will have to allow network communication on localhost (127.0.0.1) in your personal firewall software for Poser.exe and FFRender.exe.