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Stateful established-only

Firewall (nftables) · medium · solved in-browser (no VM needed) · 3 tiered hints

Write /etc/nftables.conf input chain (policy drop) that accepts ct state established,related and drops ct state invalid. (Authored config, graded structurally — the engine isn't run here.)

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Author and reason about nftables rulesets — filtering, NAT and policy.

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• Include a Drop-In Ruleset Fileeasy · in-browser
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