Skype Comodo Firewall Rules

I am looking for the ideal Firewall rules that can be applied to Skype.

What rules have you got in place?

What rules are ideal to use with Skype?

Is it possible to only use port 443 with Skype?

Thank you for any help.

■■■■ I just posted the rules to use with the VPN I am using but forum logged me out and upon login had deleted my post/message. Will post again if I can be asked to. Freaking annoying!