All Services: Do I need to allow the HackerGuardian scanning IP address?

Yes. In order for the HackerGuardian scan to be successful, your firewall must be set to allow the IP address that the scan is coming from.

The IP ranges that we scan from are:

CIDR: 91.209.196.32/28 which translates to: 91.209.196.32 through 91.209.196.48
CIDR: 199.66.200.32/28 which translates to 199.66.200.32 through 199.66.200.48