Neither the source nor destination machine are windows. Both are LINUX. Source is Fedora Workstation gnome, destination is PopOS gnome.
I don't want to use ssh. I need to share media and play media, terminal-based ssh is completely useless. I want to use my file manager to browse the files.
This is the first time I've ever attempted sharing media over LAN. I have already done some googling and the amount of information that is completely irrelevant to my situation is staggering. It's almost impossible to find information that isn't related to Windows, and even Linux itself seems to push Windows discovery a little too hard (I saw a post talking about this). I do understand that SMB = Samba.
Both machines connected via an unmanaged (yes, definitely a dumb, unmanaged, no-vlan) switch over LAN. I disabled both firewalls completely (killed process), and as far as I'm aware no other firewall is running. I enabled media sharing for the destination disk over LAN. I enabled "make available to other users" on both machines. I entered the destination machine's IPv4 address in Nautilus on my source machine like this (obviously replacing x with the exact address):
I tried a few other combinations.
smb://192.168.x.x
sftp://192.168.x.x
ftps://192.168.x.x
ftp://user@192.168.x.x
I keep getting "connection refused" and similar errors. What am I doing wrong? The machines are able to ping each other, I know this because on my firewall I see logs where each machine has pinged the other. Meaning, they are on the same subnet.