UFW (Uncomplicated Firewall) is a simple-to-use firewall utility with plenty of options for all kinds of users. It is actually an interface for iptables, which is the classic low-level tool (and harder to get comfortable with) to set up rules for you...
Learn how to add, remove, enable, and disable firewalld rules & zones in this guide.
The firewall is essential for controlling the flow of network traffic in and out of the Linux server.
It enables users to control incoming network traffic on host machines by defining a set of firewall rules.
It must be enabled on production servers facing the Internet, to protect those servers from unauthorized access.
This is one of those security features that ensures your system security at network level.
OPNsense is an open-source, FreeBSD-based firewall and routing security software that also acts as a DNS resolver for all of your desktops and mobile devices. Learn how to configure the OPNsense DNS resolver to encrypt all DNS queries to protect from eavesdropping and increase your privacy and security online in this tutorial.
