Set up the IIS web server (Windows web servers)
Each separate Environment you install must have its own IIS web server defined with a unique listening port.
Note:
This setting prevents a vulnerability within the IP Security feature in Microsoft Internet Information Services (IIS) 8.0 and 8.5. The IP Security feature does not properly process wildcard allow and deny rules for domains within the "IP Address and Domain Restrictions" list.
For additional details, see CVE-2014-4078.