PPTP access to lan network

Question

I have a VPN on the ubuntu server. I connect fine but I cannot access the lan network.

Local network: 192.168.2.0/200 VPN: 192.168.3.100/200

I need to access to next address to 192.168.2.55

I try to change iptables -I FORWARD and always show me the error iptables v1.6.1: invalid mask 200 specified

Answer 1

Your CIDR range is invalid. There is not a /200. You may be confusing CIDR with a subnet mask.