Bigip APM setup in AWS is not working

Hi All,

i have configured APM instance in AWS with multi-nic setup. now installed APM for network access. i am able to login via AD on webtop and also able to launch network access but not able to access internal resources. i have used snat pool in network access but from outside with vpn client machine when i try to ping any internal machine, it shows destination host not reachable and ip comes as bigip selfip.