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Allow ping under a drop policy

Firewall (nftables) · medium · live throwaway Linux box · 3 tiered hints

Extend the nftables ruleset so it also accepts ICMP echo-request (ping). Keep the base (table inet filter, input hook, policy drop).

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More Firewall (nftables) challenges

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

• Accept Related ICMP Errorseasy · in-browser
• Always trust loopbackeasy
• Author a base nftables ruleseteasy
• Define a Variable for WAN Interfaceeasy · in-browser
• Drop Invalid Conntrack Earlyeasy · in-browser
• Idempotent ruleset headereasy · in-browser
• Include a Drop-In Ruleset Fileeasy · in-browser
• Named hook priorityeasy · in-browser

See all Firewall (nftables) challenges →

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