We have a newly-configured Sharepoint 2013 server installation, which serves our company Intranet. The new Intranet is now in service and operational.
Next, we need to create another top-level site which will serve as an Extranet portal for clients. Sharepoint Central Administration does not provide a method by which a separate IP address can be selected for a new site; instead, it provides port selection or entry only.
We need to route external traffic to the extranet site, which requires either a mapped internal IP address or a different port. The main limitation we face is that most of our public-sector clients cannot use a non-standard port due to their firewall restrictions. So, this means a unique IP.
In the exhaustive research conducted concerning this issue, it appears that the "best practice" receommended by Microsoft themselves is nothing but a workaround, where part of the process is performed in SP Central Admin and the other half in IIS.
We have found many articles and blogs mentioning alternative ports, but none which address this situation directly.
Now we're trying to contend with Alternate Access Mappings, which are confusing our admins.
We really need the voice of experience from someone who has actually done this before.
Question: what is the correct way of achieving our goal?
