I’m a new NoMachine user trying to connect my Mac (10.15.7, running NoMachine 7.6.2) to a research lab’s computer (I believe Linux, sorry I don’t know what version this is). This lab computer has had NoMachine installed on it for a while now, and others have had success connecting to it remotely.
I tried connecting using password authentication but the error message I got was “ The NoMachine service is not available.” I tried using key-based authentication with a key I provided with the key file in .key format as well as .txt format. When I do this, it says “Authentication failed, please try again”. (I tried this using two usernames, one of which is known to work on a different computer.) When I tried using the key and ticking the “import the private key to the connection file” and “forward authentication”, I get the error message “The connection to the server was lost. Error: read: Connection reset by peer”. As you can probably surmise, I’ve been trying every possible permutation of log-in options and it’s still not working. I’ve been connected via VPN, I don’t have any firewalls on this computer, so I’m not sure what else to try.
Sorry if this seems like a very trivial issue; I’m very new to this so any help you can provide would be much appreciated!