I have a 3CX server running on Google cloud, set up with PBXExpress. It has been running well but I'd like to tighten up the firewall rules. I assume that I can add firewall rules that would only allow connections from our SIP provider and from our office network public IP to prevent other connections.
I can read Google's guide on adding firewall rules, I am pretty sure I know enough to not blow anything up, but I want to make sure I will not be locking out other needed traffic.
If there a guide on doing this? Or any advice?
Thank you.
I can read Google's guide on adding firewall rules, I am pretty sure I know enough to not blow anything up, but I want to make sure I will not be locking out other needed traffic.
If there a guide on doing this? Or any advice?
Thank you.
