#!/usr/sbin/nft -f flush ruleset table inet filter { chain input { type filter hook input priority 0; iif lo accept ct state established,related accept tcp dport { 22, 22, 80, 443, 8140 } ct state new accept icmp type { 0, 3, 8, 11, 12 } accept icmpv6 type { 1, 3, 4, 128, 129 } accept counter drop } chain forward { type filter hook forward priority filter; } chain output { type filter hook output priority filter; } }