We have few VMs inside Windows Azure virtual infrastructure.
Now we want to access those VMs through one web gateway. Currently we have to do Remote desktop to each VM to work inside that VM. But instead of doing that, we just want to setup one web security gateway. Something like Windows R2 Remote desktop gateway where you have a web page for staff. They will go to that web page, Enter user/pass and now they will see all local published desktops inside and they can choose any of those and access that particular desktop. This way they don't have to do RDP to individual machines but just be able to do it over the web through this security gateway.
I know there are many Linux based solutions like ULTEO and few others to name. And they can provide this feature. In fact Microsoft have R2 Remote desktop gateway solution but that is expensive to implement. so I am looking for an open source solution here. We are MPN (Microsoft Partner) So I don't know if we can get enough free licenses even if we use Microsoft R2 desktop gateway. But you need to guide us and advise us after proper research on how many free licenses we can have and if we can go for Microsoft solution or we go for some other free open source solution to achieve this job.