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iptables-translate -t filter -A INPUT -p tcp -m multiport --dports 80,81 -j ACCEPT
nft 'add rule ip filter INPUT ip protocol tcp tcp dport { 80, 81 } counter accept'
iptables-translate -t filter -A INPUT -p tcp -m multiport --dports 80:88 -j ACCEPT
nft 'add rule ip filter INPUT ip protocol tcp tcp dport 80-88 counter accept'
iptables-translate -t filter -A INPUT -p tcp -m multiport ! --dports 80:88 -j ACCEPT
nft 'add rule ip filter INPUT ip protocol tcp tcp dport != 80-88 counter accept'
iptables-translate -t filter -A INPUT -p tcp -m multiport --sports 50 -j ACCEPT
nft 'add rule ip filter INPUT ip protocol tcp tcp sport 50 counter accept'
iptables-translate -t filter -I INPUT -p tcp -m multiport --ports 10
nft 'insert rule ip filter INPUT ip protocol tcp tcp sport . tcp dport { 0-65535 . 10, 10 . 0-65535 } counter'
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