VS 2015 + Bower: Does not work behind firewall

Question

Problem

In Visual Studio 2015, using bower, my package restores fail when behind a firewall with an error similar to:

ECMDERR Failed to exec

Answer 1

If you have a frendly firewall administrator, aks him to allow access to external git repositories by defining the following firewall-policy:

TCP 9418 (no need for UDP)