Linux之CentOS 7上pptpd的firewalld的规则

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firewall-cmd --permanent --direct --add-rule ipv4 filter INPUT 0 -i eth0 -p tcp --dport 1723 -j ACCEPT 
firewall-cmd --permanent --direct --add-rule ipv4 filter INPUT 0 -p gre -j ACCEPT 
firewall-cmd --permanent --direct --add-rule ipv4 filter POSTROUTING 0 -t nat -o eth0 -j MASQUERADE 
firewall-cmd --permanent --direct --add-rule ipv4 filter FORWARD 0 -i ppp+ -o eth0 -j ACCEPT 
firewall-cmd --permanent --direct --add-rule ipv4 filter FORWARD 0 -i eth0 -o ppp+ -j ACCEPT
firewall-cmd --reload