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

i have the fallowing

Pc1(my lan) 192.168.50.95 - gw centos
Pc2(vpn lan) 192.168.100.23
tun0< 192.168.100.0/24
centos 192.168.50.98 - gw 192.168.50.1
eth1<192.168.50.0/24

my routes

93.198.46.70 192.168.50.1 255.255.255.255 eth1 <vpn address public
192.168.100.0 None 255.255.255.0 tun0 <vpn lan
192.168.50.0 None 255.255.255.0 eth1
Default Route 192.168.50.1 eth1

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