Organizations of remote access using "keys" (RSA)

Question

Freelance

Good afternoon.
the question of the organization of remote access with use of "keys" (RSA) interests.
Small firm. Connections maximum 2-3.
Therefore, some kind of modest solution is needed. Budget.

win2003 server. RDP protocol.

added:
access from netbook via gprs internet. during business trips, you need to monitor the server.

Answer 1

Access to what and by what protocol?

Answer 2

Look at this .

Answer 3

What is meant by "using RSA keys"? Key authentication? Or asymmetric encryption?
If the first, then dig in the direction of raising the SSH tunnel (under openssh for example) with key authentication. If the second, then again a secure tunnel by any means (ssh, any vpn, for example, the same win-implementation).

Answer 4

<mock> Ahh… Windows… Well, do RDP-port cnocking, relocate RDP to a non-standard port, make RDP authorization by key using regular means. </hum>

Answer 5

Billless you :)