hello, im having the some trouble config subnet routing on centos..

i have the fallowing

Pc1(my lan) - gw centos
Pc2(vpn lan)
centos - gw

my routes eth1 <vpn address public None tun0 <vpn lan None eth1
Default Route eth1

i enable the ipv4 forwarding, check the firewall but pc1 wont ping pc2 but centos can. can some one help me???