How to set up a server, router and laptop to work on a remote server in the office while sitting at home with a laptop?

Question

Yota

All the best)
There is a house and an office.
It used to be like this: the server works quietly in the office, and I sit at home and can go to this server through the Windows rdp program and work there in 1C, for example, and now the office has moved and the Internet has changed (the office is now sitting on yota) to crank The same thing with remote access was told to order an external static ip, which I did. How now, having a router with yota in the office and a server to get to it from home from a laptop, for example.
Respond kind people and help set up through teameviewer, I compensate in full for the time costs)
server on win server 2008
router, yota
laptop on win7

Answer 1

Map a port (RDP):
external IP:PORT (Yota router in the office with an external "white" IP address) -> internal IP:3389 (server with RDP in the office)
to the server using port-mapping on the Yota router .
And from home - connect to the external IP that you ordered.

Answer 2

Iota you have a legal entity-expensive, with a real SP?
Or - a real one on an iota is given to individuals? It seems that they don’t give at all ...
I mean, if for saving an iota in the office is an individual, then without a real person.
A realnik is usually easy to order on the home Internet, 100-150r / month.
Then - a vpn connection rises between routers,
home router = vpn-server, office router = client.
Several options for how to do this. OpenWRT(DD-WRT)+OpenVPN
or Mikrotik. And so on, a lot of variations, how not to touch the main router if they don’t let you in, etc.
Another DynDNS option on the router