Lynis Security Controls

NAME-4018 - Search entries for name resolving


A misconfigured resolver configuration may result in unexpected system behavior or a decrease in network performance. Worst case it may even make the system unavailable to other systems.



How to solve

While multiple search domains are allowed, it is advised to keep them as low as possible. Instead of repeating the 'search' line, add all domains to the same search statement.

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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 NAME-4018. All information should be considered as-is, without guarantees. Any advice or snippets should be tested before implementing in production environments.


Lynis is a technical security audit tool for Unix flavors like Linux, macOS, AIX, Solaris, and *BSD. It is open source software and free to use. The project has an active community, including open development via GitHub.

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