Firewall adjustments (Linux)

The serverbackend of the hobbitgui container needs access to keycloak via the external IP address. Therefore you may need to adapt the firewall rules. First find the IP range of the hobbit network:

docker network inspect hobbit | grep Gateway

Assuming you get something like “Gateway”: “” you have to find the matching network device:

ip addr | grep -B 2 172.19.0

If you get something like

6: br-5c9d73b080ad: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP
    link/ether 02:42:22:50:d4:8c brd ff:ff:ff:ff:ff:ff
    inet scope global br-5c9d73b080ad

the network device name is br-5c9d73b080ad. If you have iptables as firewall use:

iptables -A INPUT -i br-5c9d73b080ad -j ACCEPT

If you have firewalld (fedora/centos7) use:

firewall-cmd --permanent --zone=trusted --change-interface=br-5c9d73b080ad
firewall-cmd --reload