Firewall (nftables) · pro · solved in-browser (no VM needed) · 3 tiered hints
Author /etc/nftables.conf nat postrouting (type nat hook postrouting) `oifname "eth0" snat to 203.0.113.7`. (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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