TopicLinux →
Simple definition
The modern network filtering framework that gradually replaces iptables.
Technical definition
The modern network filtering framework that gradually replaces iptables. Under Linux, this concept is part of system administration, storage, services or host security.
What is it used for?
Administer, diagnose or secure a Linux system.
Practical example
Example: an administrator can use this concept during a diagnostic SSH.
Common issues
- Insufficient permissions
- No-persistent configuration
- Unavailable service or dependency