I am using Bower to install several libraries. For demonstration purposes here, I am installing bootstrap. Regardless of the package, I receive the following errors:
This error is related to a bad configuration of your firewall. You will notice that bower trying to contact git via the git:// protocol and not http://. You have to open port 9418. Add this two lines in your iptables configuration :
iptables -t filter -A INPUT -p tcp --dport 9418 -j ACCEPT
iptables -t filter -A OUTPUT -p tcp --dport 9418 -j ACCEPT
This should do the trick.