NETW-2704 - Nameserver configuration

This information is provided as part of the Lynis community project. It is related to Lynis control NETW-2704 and should be considered as-is and without guarantees. Any advice and commands should be tested before implementing them in production environments.

Control details
CategoryNetworking
Application

Description

Nameservers, or DNS servers, are being used to do host resolving. They resolve a hostname like www.google.com into an IP address like 74.135.133.72. If one or more nameservers are not working as expected, it might influence the performance of the system and result in other unexpected issues.

How to solve

Add additional DNS servers to the resolving configuration, which is usually /etc/resolv.conf, or part of the networking scripts. See this file if the configuration or the networking script is the original source to be changed.

Need more details?

Consider the upgrade to Lynis Enterprise to receive additional details and 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.

See demo

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.

Lynis Enterprise

Do you need to collect data from multiple systems or compliance reporting? Lynis Enterprise uses Lynis to collect the data and make your work easier.

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

  • Centralized management
  • Improvement plan with priorities
  • Reporting
  • Dashboards
  • Predefined policies
  • Integration (API)
  • Improvement snippets for tools like Ansible, Chef, Cfengine, Puppet, and SaltStack
Take the Tour