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XCCDF
Guide to the Secure Configuration of Red Hat Enterprise Linux 7
System Settings
Network Configuration and Firewalls
nftables
Ensure Base Chains Exist for Nftables
Ensure Base Chains Exist for Nftables
An XCCDF Rule
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Ensure Base Chains Exist for Nftables
Medium Severity
Tables in nftables hold chains. Each table only has one address family and only applies to packets of this family. Tables can have one of six families. Chains are containers for rules. They exist in two kinds, base chains and regular chains. A base chain is an entry point for packets from the networking stack, a regular chain may be used as jump target and is used for better rule organization.