Solution is acting as a gateway for remote administration tasks. Available on HTTPS only. Allow RDP, VNC and SSH from it to our applicative end servers. Access is restrained to Admin with 2FA.
Pros
All port closed except 443
Attackable scope is limited
Administration tasks are under one entry point
Need
Privileged users accesses should only be made through a secure portal no matter is the end-devices.
Servers should be set in a secure location. Not far from one of our offices. Services should be exposed and available with SLA. Location can host more servers in the futur.
My code is my property and I wanted to have a 100% trust in my code management system. Version control, Branching, Tracking, all this features make my work more efficient.