Networking two Macs wirelessly
iMac and Mac book pro - both running Catalina. I tried to network them wirelessly. iMac shows in finder window of Mac book pro. But, it says "connection failed." I have shut down and rebooted both computers and tried this several times with no change. The name of my external hard drive connected to the iMac appears on my Mac book pro finder window under network, but its finder window in empty. Help.
iMac 21.5"