Hi. I am from remote.it. Good to hear remote.it connections are working but odd you cannot connect from the LAN even though Ping is working fine on the LAN? I noticed you used port 22 for Telnet. I thought Telnet is on 23? Anyway if you still have the problem ... I am not expert on dietpi but the command to ssh to a pi running Raspbian (a.ka Raspberry OS) is "ssh -l pi 192.168.0.150 -p 22" for default port 22. You might have to give the username in the command? Also if you explicitly type the port number I think you need the "-p" operator.