What registry and firewall modifications are needed to enable remote assistance via command line?

To enable remote assistance from the command line, set the registry key `HKLM\SYSTEM\CurrentControlSet\Control\Remote Assistance\fAllowToGetHelp` to `1` using `REG ADD`. Then enable the built-in firewall rule by running `netsh advfirewall firewall set rule group="Remote Assistance" new enable=Yes`. These steps grant the necessary permissions for incoming remote assistance connections, as described in the article.