You can do that manually, but there’s a nice utility also provided in this repo that will automate it, and provide some helpful commands for checking the real firewall status.

A ufw-docker-logging-deny -m limit -limit 3/min -limit-burst 10 -j LOG -log-prefix ' ' We hope you found this tutorial useful Stay safe. Here you learned all the basics that shouldn’t be skipped.

However, the application has many more options to extend the protection of our server. A DOCKER-USER -j ufw-docker-logging-deny -p udp -m udp -dport 0:32767 -d 192.168.0.0/16 So after a bit more reading, I found I needed to set up NAT and masquerading, so I put the following into rules.before: NAT table rules nat :POSTROUTING ACCEPT 0:0 Forward traffic through eth0 - Change to match you out-interface -A POSTROUTING -s 10.0.1. The process of configuring a Firewall in Ubuntu 18.04 is easy to do thanks to UFW. A DOCKER-USER -j ufw-docker-logging-deny -p tcp -m tcp -tcp-flags FIN,SYN,RST,ACK SYN -d 172.16.0.0/12 A DOCKER-USER -j ufw-docker-logging-deny -p tcp -m tcp -tcp-flags FIN,SYN,RST,ACK SYN -d 10.0.0.0/8 A DOCKER-USER -j ufw-docker-logging-deny -p tcp -m tcp -tcp-flags FIN,SYN,RST,ACK SYN -d 192.168.0.0/16 A DOCKER-USER -p udp -m udp -sport 53 -dport 1024:65535 -j RETURN

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