I have seen vpn diagram like

(vpnserver1-12.13.14.15)---internet---(14.15.16.18-vpnserver2)


Here 12.13.14.15 and 14.15.16.18 are real ip.


i need internet to test my vpn connection .


I want to simulte that in my home connection .


pc2--(eth0)vpnserver1(eth1)--------(eth1)vpnserver2(eth0)---pc2


can anyone tell me how do i need to setup .
What ip i need to give on those eth1 interface ?
Without giving same series ip like 192.168.10.6/24
and 192.168.10.8 /24 on eth1 i can not connect 2 pcs ..
Who to design the test network with ips (we have 4 pc) for vpn ?


Please help me.