Connectify will attempt to configure the Windows Firewall to give your the best experience possible. Sometimes, these changes don't quite work. And if you are running any non-Microsoft firewall security software, Connectify won't configure these to allow full use of Connectify.
Below are some configurations that must be done to your firewall software in order for Connectify to be fully functional.
o UPnP - 1900 (UDP), 2869 (TCP), 5000 (TCP)
o DHCP - 67 (UDP), 68 (UDP), 1317 (UDP)
o DNS - 53 (UDP), 1303 (UDP)
In addition to these, if your firewall software has any settings involving Internet Connection Sharing (ICS), enable support for these.
Some firewalls may require full network access be granted to Connectifyd.exe in order for Connectify to function properly.