Can I use the same key for SSH from different clients with the same username?
Solution 1:
Yes, you can use the same key from each workstation. Your workstation's name is part of the comment attached to the key, and should not prevent you from copying the key to another machine and using it there.
When copying the key, people recommend that you do this via a secure mechanism such as a detachable USB drive. Just copying it directly over the network is subject to whatever limitations exist with that connection.
Further reading:
- How to transfer my SSH keys to another machine?
- Easiest way to copy ssh keys to another machine?