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XCCDF
Guide to the Secure Configuration of Red Hat Enterprise Linux 7
System Settings
Network Configuration and Firewalls
Uncomplicated Firewall (ufw)
Uncomplicated Firewall (ufw)
An XCCDF Group - A logical subset of the XCCDF Benchmark
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Uncomplicated Firewall (ufw)
1 Rule
The Linux kernel in Ubuntu provides a packet filtering system called netfilter, and the traditional interface for manipulating netfilter are the iptables suite of commands. iptables provide a complete firewall solution that is both highly configurable and highly flexible. Becoming proficient in iptables takes time, and getting started with netfilter firewalling using only iptables can be a daunting task. As a result, many frontends for iptables have been created over the years, each trying to achieve a different result and targeting a different audience. The Uncomplicated Firewall (ufw) is a frontend for iptables and is particularly well-suited for host-based firewalls. ufw provides a framework for managing netfilter, as well as a command-line interface for manipulating the firewall. ufw aims to provide an easy to use interface for people unfamiliar with firewall concepts, while at the same time simplifies complicated iptables commands to help an administrator who knows what he or she is doing. ufw is an upstream for other distributions and graphical frontends.
Verify ufw Enabled
Medium Severity
The
ufw
service can be enabled with the following command:
$ sudo systemctl enable ufw.service