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XCCDF
Guide to the Secure Configuration of Ubuntu 20.04
System Settings
Network Configuration and Firewalls
nftables
Ensure nftables Rules are Permanent
Ensure nftables Rules are Permanent
An XCCDF Rule
Details
Profiles
Prose
Ensure nftables Rules are Permanent
Medium Severity
nftables is a subsystem of the Linux kernel providing filtering and classification of network packets/datagrams/frames. The nftables service reads the
file for a nftables file or files to include in the nftables ruleset. A nftables ruleset containing the input, forward, and output base chains allow network traffic to be filtered.