FIRE-4520 - Configuration warnings in pf firewall

(Networking)

This information is provided as part of the Lynis community project. It is related to Lynis control FIRE-4520 and should be considered as-is and without guarantees. Any advice and commands should be tested before implementing them in production environments.

Description

Lynis uses the built-in check of pf to determine if the configuration has any warnings. When the utility shows any, Lynis will trigger this control.

How to solve

Run pfctl in verbose mode (-vvv) and the -n option to check your configuration file. More extensive tests can be done with the Lynis Enterprise plugins and interface.

Need more details?

Consider an upgrade to Lynis Enterprise to receive more guidance. The Enterprise version helps to you with daily health checks of your environment, learn in-depth system hardening, and resources to protect your systems better.

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About

Lynis is a technical security auditing tool for Unix flavors like Linux, macOS, AIX, Solaris, and *BSD. It is open source software and free to use. Typical usage include system hardening, compliance testing, and vulnerability scanning. The project has an active community, including development via GitHub.

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Benefits: automate security audits, detailed reporting, compliance testing.

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