Firewalls control access to networks and devices, filtering traffic and logging connection attempts. Key functions include Network Address Translation (NAT) and Virtual Private Network (VPN) support to manage internal and external IP addresses. Linux firewalls like iptables, UFW, and firewalld offer solutions for both host-based and network-based firewall configurations. UFW is typically used in Debian-based systems, while firewalld is common in Red Hat-based distributions. Graphical interfaces like GUFW and firewall-config can be used for easier management. Regular monitoring and testing of firewall configurations are crucial to ensure network security.
Table of contents
Understand How Firewalls Manage Network TrafficCommon Linux Firewall InterfacesUncomplicated Firewall (UFW) SettingsFirewalld SettingsWhat About Graphical Firewall Interfaces?Test Firewall ConfigurationsWrap UpSort: