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-A INPUT -p tcp --sport 21 -m state --state ESTABLISHED -j ACCEPT
-A INPUT -p tcp --sport 20 -m state --state ESTABLISHED,RELATED -j ACCEPT
-A INPUT -p tcp --sport 1024: --dport 1024: -m state --state ESTABLISHED -j ACCEPT
-A OUTPUT -p tcp --dport REMOTE_PORT -m state --state NEW,ESTABLISHED -j ACCEPT
-A OUTPUT -p tcp --dport 20 -m state --state ESTABLISHED -j ACCEPT
-A OUTPUT -p tcp --sport 1024: --dport 1024: -m state --state ESTABLISHED,RELATED,NEW -j ACCEPT