1iptables-translate -t filter -A INPUT -p tcp -m multiport --dports 80,81 -j ACCEPT 2nft add rule ip filter INPUT ip protocol tcp tcp dport { 80,81} counter accept 3 4iptables-translate -t filter -A INPUT -p tcp -m multiport --dports 80:88 -j ACCEPT 5nft add rule ip filter INPUT ip protocol tcp tcp dport 80-88 counter accept 6 7iptables-translate -t filter -A INPUT -p tcp -m multiport ! --dports 80:88 -j ACCEPT 8nft add rule ip filter INPUT ip protocol tcp tcp dport != 80-88 counter accept 9 10iptables-translate -t filter -A INPUT -p tcp -m multiport --sports 50 -j ACCEPT 11nft add rule ip filter INPUT ip protocol tcp tcp sport 50 counter accept 12