Duplicate SSH Service Solution

I want to duplicate 90% of what these current sites are doing: [login to view URL] ================== PLEASE READ ================== [login to view URL] [login to view URL] Specifically with [login to view URL] as an example and since there client is opensource: I want be able to create a user account on my SSH server. Each user gets a unique key and can perform the following which will link their computer to my SSH server: > openport --register-key {unique key} From there I want to be able to do the following: > openport 389 Which will open a reverse SSH port on my server back to the client:389 Programmers who bid without asking intelligent questions will not be considered! Programmers who do not ask any questions will not be considered!