Azure

Update 2023-09-15 Using Control Master This is my preferred approach now, as it is simple to use, and doesn’t come with the added security issues of having authentication keys lying around. It utilises an SSH capability called ControlMaster, which multiplexes multiple SSH sessions over the same connection. Only the initial connection requires authentication, then, all subsequent SSH or SCP calls to the same account+host will use the authenticated connection. Step 1 is to setup you SSH to use ControlMaster. In ~/.ssh/config add ...

Securing any infrastructure means, amongst other things, protecting machines from unnecessary exposure, and restricting remote administration access. While having an SSH port open to the world is sometimes a necessary evil, a preferable approach is to restrict access, via a firewall or security group, to a smaller, more controlled network. If you always administer your systems from a single location - home, office, etc - it is practical to simply whitelist those IP addresses. However, if you are ever working remotely it’ll become necessary to either manually add your current IP address, or use a VPN. ...