Symptoms

Browser displays "proxy does not allow connections" or similar error message when connecting to web targets on RHEL8.

Solution

RHEL8 firewalld and docker-ce are not compatible with each other out of the box (additional info here). To address this, please run these commands on the carrier host as root:

# firewall-cmd --permanent --zone=trusted --add-interface=docker0
# service privx-carrier stop
# service docker stop
# service firewalld restart
# service docker start
# service privx-carrier start