Firewalls are an essential part of network security, yet Gartner says 95% of all firewall breaches are caused by misconfiguration. In my work I come across many firewall configuration mistakes, most ...

Firewall migration is one of those projects that looks straightforward on a whiteboard and becomes complicated fast during execution. Configuration dependencies you did not know existed. Interruptions ...

Initially, firewalld looks difficult to use, but it really isn't. Services and zones make it easy to put the pieces together and configure Linux firewalls. Although it also works on the netfilter code ...