need to create destination to system in Zone 4

Hello, I'm trying to create a destination in my cockpit (Neo Canary - Zone 3) to

https://github.infra.hana.ondemand.com which is on Zone 4 DMZ.

I have tried by creating a destination with proxy type Internet and uploaded a jks containing the server, verizon and baltimore certificates.

I keep receiving "peer not authenticated".

Do you know how to do this?