thanks for your earlier help.
Now vpn is working fine. now I created a Lan behind my client(192.168.4.0/24) with client that is connecting to my vpn server is 192.168.4.1 my second client has a ip of 192.168.4.2/24. But, my second client is not able to ping my vpn internal network(172.16.1.0/24). here are my server and client conf. files
server 10.8.0.0 255.255.255.0
push "route 172.16.1.0 255.255.255.0"
route 192.168.4.0 255.255.255.0
keepalive 10 120
when I tried the ccd directory and push route. its not working.
plese guide me