Lynis Security Controls
FIRE-4512 - Empty iptables ruleset
Lynis checks for the availability of IPtables, but also if the ruleset is not empty. This might indicate bad configuration or a missing ruleset on the system.
How to solve
Usually this control shows up when the iptables module is loaded, while there no firewall rules loaded. Consider turning off the firewall software completely, or preferably populate it with an appropriate firewall policy.
- iptables project (Website of the iptables project)
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Linux and Unix System Hardening
This information is provided as part of the Lynis community project. It is related to Lynis control FIRE-4512. All information should be considered as-is, without guarantees. Any advice or snippets should be tested before implementing in production environments.
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