修改vsftpd被动模式

pasv_enable=YES
pasv_min_port=3000
pasv_max_port=4000

iptables -I INPUT -p tcp -m state --state NEW -m tcp --dport 21 -j ACCEPT
iptables -t filter -A FORWARD -p tcp -m state --state RELATED,ESTABLISHED -j ACCEPT
iptables -I INPUT -p tcp --dport 3000:4000 -j ACCEPT
iptables -I OUTPUT -p tcp --sport 3000:4000 -j ACCEPT