APM Base license and explicit forward proxy

Hi,

More than once I have successfully configured an explicit forward proxy in BIG-IP. However today I seem to be out of luck. SSL requests don't work. Curl gives the following error message:

curl: (35) Unknown SSL protocol error in connection to 10.10.10.5:8080

In my lab I run a VE with exact the same config and software version (12.0.0 HF3) and there it runs without any problems. The F5 appliance which I'm trying to configure licensed with the APM base license. The LTM module is not licensed and provisioned. Could it be for this implementation that a licensed and provisioned LTM module is mandatory?

I'm using this guide:

https://support.f5.com/kb/en-us/products/big-ip_apm/manuals/product/apm-secure-web-gateway-implementations-12-0-0/7.html

Kind regards,

 --Niels