I have a bunch of computers I'm trying to connect to each other with some random router I found lying around. I have all the machines connected to the router and have given them fixed IPs. I have used ssh before and I thought it would be super easy just remote-control the other machines with ssh, but for some reason I get this "permission denied, please try again"-error.
I've tried making firewall adjustments, various conformations of the /.ssh/sshhd_config, but nothing works. I'm at least sure that the machines can "see" each other, since when I enter the IP I'm asked for the password of a username@machinename of the computer I know I'm connecting to.
I'm worried that I may have some configurations to do with my router, or that I'm somehow giving bad static IPs, but in those regards I don't have a first clue about what to do. Do you guys have any other suggestions as to what might be wrong?
Oh yeah, I'm using Ubuntu 20.04.