NETW-3014 - Promiscuous interfaces

This information is provided as part of the Lynis community project. It is related to Lynis control NETW-3014 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

When a network interface is actively listening it is in "promiscuous mode". This may happen when running a tool like tcpdump, an IDS, or some other software component.

How to solve

Check the process list for clues which piece of software put the network interface in promiscuous mode.

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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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