Metatrader 4

I have been using CIS and Metatrader 4 trading platform together for a long time and have never had any issues. Suddenly today, my firewall is interfering with my Metatrader. As soon as I disable my CIS firewall, my Metatrader platform works. As soon as I enable it, the “no connection” status kicks in.

Could anyone please tell me how to setup my CIS firewall to allow Metatrader to work while my PC remains safe?

THANKS

How does the firewall need to be configured according to Metatrader?

What version of CIS or CFP are you using? Can you show a screenshot of your Global Rules?