If you saw some requirement that you should give Poser permission (from your firewall) for network access, this is to allow the Poser executable to communicate with its content library, which is a separate executable.  These two programs only need local network access to each other;  they do not need wide area network (internet) access.

     I frequently used PP2010 (and later PP2012) on my laptop at the firehouse, which often has no internet service.

Poser 12, in feet.  

OSes:  Win7Prox64, Win7Ultx64

Silo Pro 2.5.6 64bit, Vue Infinite 2014.7, Genetica 4.0 Studio, UV Mapper Pro, UV Layout Pro, PhotoImpact X3, GIF Animator 5