Today I just had to spend the afternoon learning this technology properly for the first time in my career. I've always been a (L)user of SSH without really understanding how to use it properly, and this helped fill in the blanks. Thanks.
Acme is from Looney Tunes where Coyote order everything, Shinra is from Final Fantasy VII is the Malevolent Corporation and Skynet is from The Terminator the evil computer system from the future.
18:11 When closing the terminal, the ssh-agent does not close. You can simply export the two environment variables (SSH_AUTH_SOCK and SSH_AGENT_PID) from the previous terminal and everything will work the same way.
ACME - Classic cartoon company that Wile E. Coyote would get all his good from to capture Road Runner Shinra - I had too Google. Either Fire Force or Final Fantasy 7 Skynet - AI from Terminator
THIS! This tutorial is the only one of the 4 that I looked at that talked about the 'config' file in the user's .ssh directory. Quite frankly a game changer. I am certain that there are security tradeoffs somewhere with this file but based on the person's system permissions for the directory (users are advised to use chown to their own user and group) and the chmod to 700 so it's reachable, its just enough info to make ssh-ing sessions a lot less arcane and context switch intensive looking for secure passwords or whatever. Using a modern ssh key format like ed25519 makes complete sense as well from a security and speed perspective. What a great tutorial! So glad you posted this.
I've seen a lot of your content, very well done. I have a question on this topic, is there a way on Windows to setup my .ssh keys as you've demonstrated on your Linux client?
Not only gifted with Linux but also in teaching and explaining. Really appreciate it. I had several domestic servers. Just moved to linofe and paid for my first server.
Thank you for such a useful guide! I have another issue, I have 3 PCs (home, work, laptop) and I need to have access to my server from all my workplaces. Is it better to duplicate them or should I generate new ones for all PCs?
Is it really necessary to run ssh-agent after adding keys to config file? Because I always assumed that the SSH command would read its parameters from the config file Hence no need for ssh-agent.
no. it's a specific cryptographic standard. "Ed" from Edwards (twisted elliptic curves) "25519" from Curve25519, which is a specific mathematical description of one of the components used.
I have created 2 ssh keys, but there is something that i don't understand. I cannot associate my ssh keys, i'm using a personal github account, and another gitllab account, i want to use both ssh keys to work with diferent repositories. But when i try to associate a key with "the server" as $ ssh -i ~/.ssh/githubexample_key githubexample always appears this error => ssh: Could not resolve hostname githubexample The thing is that i don't know "how to get to the gitlab server", or "the github server", by the other hand i understood (maybe missunderstood) that the server is connected with the name of the key before the underscore.
Hearing "shinra" out of nowhere really soothed the pain of having to learn how to juggle multiple different identities with no GUI and very little understanding of Anything Involved; thank u. This would be an amazing tutorial either way but now I'm thinking about how pretty they made Cloud in the ff7 remake instead of how mad GitHub makes me
As an old retired tech admin guy, this brings back a lot of good memories. You showed some good advanced techniques to keeping everything secure while easy to manage. Good job!
