I was having some issues getting SAP Hybrid Application Toolkit connected & I finally wound up having to save & manually add the SSL certs to my Java keystore in order to allow communication to go through. I also had to change several options to avoid using SSL, since we don't use a separate proxy for SSL.
I downloaded the cert for Connectivity Tunnel Certificate Generation but it didn't seem to help. Any other ideas of what I can try? I've got my networking team looking into it, but I'm trying to figure out if there's anything I can do in the meantime?