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Iptables - Internal/Public forwarding

FlorinMarianFlorinMarian Member, Host Rep
edited August 2018 in Help

Hi guys 1
I try to hide my gameserver IP behind another VPS with an IP-IP tunnel.
Everything it's set up but still have a issue.
I don't know why but with this IP tables configuration I cannot play game because after first packet, each player it's sent to 192.168.168.2 (Gameserver internal IP).
I cannot figure why with POSTROUTING commented below all ports give connection time out like there they fly.

188.212.100.109 - exposed IP address from tunnel
192.168.168.2 - Gameserver IP
192.168.168.1 - internal IP of 188.212.100.109

Hope someone will manage this for me.
Best regards, Florin.
iptables -P INPUT ACCEPT
iptables -P OUTPUT ACCEPT
iptables -P FORWARD ACCEPT

iptables -F
iptables -F -t nat
iptables -X
iptables -X -t nat

iptables -t nat -A PREROUTING -d 188.212.100.109 -p tcp --dport 30001:30011 -j DNAT --to-destination 192.168.168.2
iptables -A FORWARD -d 192.168.168.2 -p tcp --dport 30001:30011 -m state --state ESTABLISH -j ACCEPT
iptables -t nat -A POSTROUTING -d 192.168.168.0/30 -j MASQUERADE
#iptables -t nat -A POSTROUTING -d 192.168.168.0/30 -j SNAT --to-source 188.212.100.109
sysctl -w net.ipv4.ip_forward=1
iptables -vL

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