Internet access on F5 VPN with SNAT and split-tunnel disabled

You are using F5 APM module. However the APM uses internally another module called LTM. Virtual Servers are LTM objects.

You first need to split the problem in 2 small problems:

1 - Internet traffic must go inside the VPN

2 - The F5 must have access to the Internet to be able to route the traffic to the Internet

First point, requires APM configuration. Second point, requires LTM configuration and routing in your network.

Very important is to make sure traffic returning from the Internet goes back to F5 unit and consequently the VPN tunnel. SNAT can help with that.

Some documentation that can help you with that:

https://support.f5.com/kb/en-us/products/big-ip_apm/manuals/product/apm-network-access-12-1-0.html

https://support.f5.com/kb/en-us/products/big-ip_ltm/manuals/product/tmos-routing-administration-12-1-1.html