libnfnetlink ☆

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Description:
Low-level library for netfilter related communication

Type: Formula | Tracked Since: Dec 28, 2025

Links: Homepage | formulae.brew.sh

Category: Networking

Tags: networking netfilter linux security library

Install: brew install libnfnetlink

About:
Libnfnetlink is the low-level library that forms the core part of the netfilter project. It provides a generic interface for communication between the Linux kernel's netfilter subsystem and userspace applications. This library is essential for tools that need to interact with connection tracking, logging, and other netfilter features directly.

Key Features:

Provides a generic netlink interface for kernel communication
Serves as the foundational layer for iptables and conntrack tools
Lightweight and optimized for low-level network operations

Use Cases:

Developing custom firewall management utilities
Interfacing with Linux connection tracking (conntrack) subsystem
Building network monitoring tools that require kernel-level data

Alternatives:

libmnl – A newer, lighter netlink library that is often preferred for new development, while libnfnetlink is specific to netfilter subsystems.

Version History

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