i find sort of ironical that Firewall popup is used as ‘proof’ the application is doing something on network
but the Firewall is not used to block the application from doing something on network permantently if needed
why the Firewall is then installed? 
also, explain to your chief that what he sees is not communication to internet but your local network DNS server
http://en.wikipedia.org/wiki/Domain_Name_System#Address_resolution_mechanism
but i doubt he will understand that anyway