A few months ago, we completed the installation and initial testing of a set of Cisco Expressway v11.5 servers. One of my consultants mentioned to me today that he was able to login to the Expressway-E server from outside the company via port 443. I've been digging through the documentation and searching for best practices, but I haven't found anything on how I might better secure against that potential vulnerability. Can anyone point me in the right direction? I feel like this is something simple that I am just overlooking.