How to setup cPanel with GRE tunnel ?

[crossing]

Hello,

I need to protect my WHM Cpanel VPS against DDoS using nearby DDoS protected VPS. Anyone can guide me step by step how to achive that ?

I have tried this but failed:

On protected VPS:

echo 'net.ipv4.ip_forward=1' >> /etc/sysctl.conf
sysctl -p
iptunnel add gre1 mode gre local YOUR_FILTERED_IP remote DESTINATION_SERVER_IP ttl 255
ip addr add 192.168.168.1/30 dev gre1
ip link set gre1 up


On the remote server I wish to protect:

iptunnel add gre1 mode gre local DESTINATION_SERVER_IP remote YOUR_FILTERED_IP ttl 255
ip addr add 192.168.168.2/30 dev gre1
ip link set gre1 up



Thank you..

 

[cPanelMichael]

Hello

This is a custom network configuration, and there's no native options in cPanel that will automatically configure/enable this setup. However, searching for a term such as "cPanel GRE Tunnel" on Google yields several results. Feel free to let us know if you encounter any issues with cPanel after configuring this.

Thank you.

 

[crossing]

Hello,

Its done but after server reboot all settings are lost. Where should I add this commands to be run it on reboot ?

iptunnel add gre1 mode gre local DESTINATION_SERVER_IP remote YOUR_FILTERED_IP ttl 255
ip addr add 192.168.168.2/30 dev gre1
ip link set gre1 up

ip rule add from 192.168.168.0/30 table DDoS
ip route add default via 192.168.168.1 table DDoS

 

[cPanelMichael]

That's an unsupported network configuration, but I believe the following third-party URL may help:

CentOS • View topic - Boot script with iptunnel ifconfig iptables

Thank you.