Use Linux Firewalld to Create Safe Zone

Firewalld is a zone-based firewall solution that available for many Linux distributions. It provides a dynamically managed firewall rules with zones.

Each zone can be configured to accept or deny any requests or services. It supports IPV4 and IPV6. Zones can be associated with different network interfaces.

By default firewalld comes with already defined zones. “firewall-cmd” will be used to monitor and manage firewall zones.

This command set returns available zones that already defined to use. Zone names should indicate their purpose.

The predefined zone can be used to manage traffic but it should be a good point to define a specific zone. When adding a new zone, you must use the “permanent” option to add it to the firewall configuration. After defining all configuration you must reload firewall daemon.

At this post, we will perform a test scenario that will isolate Consul service. Create a black and white list to give access to consul-clients.

Related posts:

You scare me in the most beautiful way. “To the Bone” is published by Alexandria Filipowski.

One of the biggest advantages of exhibiting in a trade show is that you meet face to face with lots of prospective customers. In a world where many people are after outbound marketing like cold…

Following the Cambridge Analytica data privacy scandal, the world’s largest social network is stopping researchers accessing its data — with Netvizz the latest casualty. This has significant…