Can't ping other IP from OpenVPN server LAN

[maniek]

Hi
At first egzample config

Comp0 in Lan0 - openvpn client:
eth0 xxx.xxx.xxx.xxx
tun0 10.8.0.6

Comp1 in Lan1 - openvpn server:
eth0 172.20.23.2
tun0 10.8.0.1

Comp2 in Lan1:
eth0 172.20.23.3

And now:
1. if I ping 10.8.0.1 from my Comp0 it's working.
2. if I ping 172.20.23.2 from my Comp0 it's also working.
3. if I ping 172.20.23.3 from my Comp1 it's also working.
4. if I ping 172.20.23.3 from my Comp0 it's not working.

Why I can't ping Comp2 from Comp0, and what I must do, to can ping Comp2 from Comp0?

Can anyone help?

[maikcat]

post your server/client configs first.

you must enable ip forwarding on your server,
allow traffic if you have firewall enabled
push a route for your lan to your clients
and configure routing to your server side so your pcs inside
your lan will route packets for vpn subnet to the right place.

Michael.