I have a client who hosts a web server which of course uses port 443.
They also have an Exchange 2013 server and I would like to be able to get them set up to check their email offsite but would need to change the port so that the request directs to the Exchange Server instead of the email server.
I understand that the simplest way to do this would be for them to get a second IP and use 1to1 NAT to direct the traffic, however they use a mickey mouse ISP and I would prefer to avoid having to argue with them if I can help it.
As things are right now no one is accessing their email offsite at all, so my goal is to allow them to use OWA if they would like and if they decide that they want access on their phones etc we can look at getting them a second IP if necessary.
Any help with this would be great.