I'm running LMS version 3.2 on Windows in ACS mode. To access Cisco.com I use a proxy server, this proxy server has access to the Internet, but connections to "inside" servers (like ACS) are not allowed.
I've noticed that the HTTP/HTTPs Connectivity With ACS has a status "Not Reachable". When troubleshooting this with a network sniffer, I noticed requests for https://<ACS_SERVER>:2002 being sent to the proxy instead of a direct connection. The proxy denies these requests.
I can't remove the proxy configuration in LMS, as this will break connectivity to Cisco.com
I don't want to permit access to "inside" servers on the proxy server, as I consider this a security issue.