1iptables-translate -t filter -A INPUT -m conntrack --ctstate NEW,RELATED -j ACCEPT 2nft 'add rule ip filter INPUT ct state new,related counter accept' 3 4ip6tables-translate -t filter -A INPUT -m conntrack ! --ctstate NEW,RELATED -j ACCEPT 5nft 'add rule ip6 filter INPUT ct state ! new,related counter accept' 6 7ip6tables-translate -t filter -A INPUT -m conntrack ! --ctstate NEW -j ACCEPT 8nft 'add rule ip6 filter INPUT ct state ! new counter accept' 9 10iptables-translate -t filter -A INPUT -m conntrack --ctproto UDP -j ACCEPT 11nft 'add rule ip filter INPUT ct original protocol 17 counter accept' 12 13iptables-translate -t filter -A INPUT -m conntrack ! --ctproto UDP -j ACCEPT 14nft 'add rule ip filter INPUT ct original protocol != 17 counter accept' 15 16iptables-translate -t filter -A INPUT -m conntrack --ctorigsrc 10.100.2.131 -j ACCEPT 17nft 'add rule ip filter INPUT ct original saddr 10.100.2.131 counter accept' 18 19iptables-translate -t filter -A INPUT -m conntrack --ctorigsrc 10.100.0.0/255.255.0.0 -j ACCEPT 20nft 'add rule ip filter INPUT ct original saddr 10.100.0.0/16 counter accept' 21 22iptables-translate -t filter -A INPUT -m conntrack --ctorigdst 10.100.2.131 -j ACCEPT 23nft 'add rule ip filter INPUT ct original daddr 10.100.2.131 counter accept' 24 25iptables-translate -t filter -A INPUT -m conntrack --ctreplsrc 10.100.2.131 -j ACCEPT 26nft 'add rule ip filter INPUT ct reply saddr 10.100.2.131 counter accept' 27 28iptables-translate -t filter -A INPUT -m conntrack --ctrepldst 10.100.2.131 -j ACCEPT 29nft 'add rule ip filter INPUT ct reply daddr 10.100.2.131 counter accept' 30 31iptables-translate -t filter -A INPUT -m conntrack --ctproto tcp --ctorigsrcport 443:444 -j ACCEPT 32nft 'add rule ip filter INPUT ct original protocol 6 ct original proto-src 443-444 counter accept' 33 34iptables-translate -t filter -A INPUT -m conntrack --ctstatus EXPECTED -j ACCEPT 35nft 'add rule ip filter INPUT ct status expected counter accept' 36 37iptables-translate -t filter -A INPUT -m conntrack ! --ctstatus CONFIRMED -j ACCEPT 38nft 'add rule ip filter INPUT ct status ! confirmed counter accept' 39 40iptables-translate -t filter -A INPUT -m conntrack ! --ctstatus CONFIRMED,ASSURED -j ACCEPT 41nft 'add rule ip filter INPUT ct status ! assured,confirmed counter accept' 42 43iptables-translate -t filter -A INPUT -m conntrack --ctstatus CONFIRMED,ASSURED -j ACCEPT 44nft 'add rule ip filter INPUT ct status assured,confirmed counter accept' 45 46iptables-translate -t filter -A INPUT -m conntrack --ctexpire 3 -j ACCEPT 47nft 'add rule ip filter INPUT ct expiration 3 counter accept' 48 49iptables-translate -t filter -A INPUT -m conntrack --ctdir ORIGINAL -j ACCEPT 50nft 'add rule ip filter INPUT ct direction original counter accept' 51 52iptables-translate -t filter -A INPUT -m conntrack --ctstate NEW --ctproto tcp --ctorigsrc 192.168.0.1 --ctorigdst 192.168.0.1 --ctreplsrc 192.168.0.1 --ctrepldst 192.168.0.1 --ctorigsrcport 12 --ctorigdstport 14 --ctreplsrcport 16 --ctrepldstport 18 --ctexpire 10 --ctstatus SEEN_REPLY --ctdir ORIGINAL -j ACCEPT 53nft 'add rule ip filter INPUT ct direction original ct original protocol 6 ct state new ct status seen-reply ct expiration 10 ct original saddr 192.168.0.1 ct original daddr 192.168.0.1 ct reply saddr 192.168.0.1 ct reply daddr 192.168.0.1 ct original proto-src 12 ct original proto-dst 14 ct reply proto-src 16 ct reply proto-dst 18 counter accept' 54 55iptables-translate -t filter -A INPUT -m conntrack --ctstate SNAT -j ACCEPT 56nft 'add rule ip filter INPUT ct status snat counter accept' 57 58iptables-translate -t filter -A INPUT -m conntrack --ctstate DNAT -j ACCEPT 59nft 'add rule ip filter INPUT ct status dnat counter accept' 60 61