PPTP VPN with CSF firewall
Issue
- PPTP VPN is not working after installing CSF firewall.
- How to allow PPTP in cPanel server with CSF firewall ?
Solution
-
Create a file /etc/csf/csfpre.sh with the below contents.
iptables -A INPUT -i eth0 -p tcp --dport 1723 -j ACCEPT iptables -A INPUT -i eth0 -p gre -j ACCEPT iptables -A OUTPUT -p gre -j ACCEPT iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE iptables -A FORWARD -i ppp+ -o eth0 -j ACCEPT iptables -A FORWARD -i eth0 -o ppp+ -j ACCEPT -
Create a file /etc/csf/csfpost.sh with the below contents.
service pptpd stop service pptpd start - Now Restart csf with csf -r command. The VPN should work fine now.
cant access internet using pptp
IS this correct csfpre.sh?
iptables -A INPUT -i enp4s+ -p tcp –dport 1723 -j ACCEPT
iptables -A INPUT -i enp4s+ -p gre -j ACCEPT
iptables -A OUTPUT -p gre -j ACCEPT
iptables -t nat -A POSTROUTING -o enp4s+ -j MASQUERADE
iptables -t nat -A POSTROUTING -s 172.20.28.0/24 -j SNAT –to-source 103.15.104.16
iptables -A FORWARD -i ppp+ -o enp4s+ -j ACCEPT
iptables -A FORWARD -i enp4s+ -o ppp+ -j ACCEPT
Hi Philip, did you enable tcp forwarding from sysctl ?