I have a server with VMware ESXi 6.5 on it. The network behind the server consists of a Asus router and a ZyWALL USG which the server running ESXi is physically connected. The Asus router has a configured static route to the ZyWALL. The firewall feature on the ZyWALL is disabled.

I have troubles connecting to the web interface. I get a status message telling me "Establishing secure connection", the page loads for like 10 seconds, then it times out, leaving me there with a blank page telling me that the connection timed out.

Traceroute shows that the server is found via a static route, in this case the ZyWALL. The server responds to ping without any problems.
However, when doing curl on <https://server.ip/> i get the following message:

**WMWARE WARNING: using IP address, SNI is being disabled by the OS. \* Server aborted the SSL handshake**

Here's the strange thing though. When I plug my laptop directly to a physical port on the ZyWALL there isn't any problems connecting to the server.

What's the issue?