Q: WHY DO SOME VPN PROVIDERS REQUEST THAT YOU DISABLE THE FIREWALL TO USE VPN? HOW SAFE IS IT TO DISABLE THE FIREWALL WHILE ON VPN?
A: To be blunt, because they have either improperly developed their software, or there is some shady business going on.
Your Firewall is a first-line defense for cybersecurity. Do not turn it off. I’ve never worked with a quality VPN provider that required this. Currently, my personal favorite is perfect-privacy.com. This is because they allow all of your devices to be on VPN (not just a few), provide excellent step-by-step setup instructions, and they are among the few VPN providers that are using the most current standard – IKEv2. I find this to be superior to any of the other VPN protocols available.