IPv6 is the latest version of the Internet Protocol, replacing the outdated IPv4 that still powers the majority of the web, and solving the IP exhaustion issue. Is it really faster, and should you care about it for your server?
SSH, which stands for Secure Shell, isn’t very secure by default, opting for basic password authentication with no other limits. If you really want to lock down your server, you’ll need to do more configuring.
SSH agent forwarding allows you to use your private, local SSH key remotely without worrying about leaving confidential data on the server you’re working with. It’s built into ssh, and is easy to set up and use.