Whether you are on LAN or Wi-Fi you can easily and securely transfer and manage files between the local and remote computer during a NoMachine remote desktop session.
Drag & drop
The quickest option is to the drag and drop individual files to the desktop of the "other computer" including via browser-based sessions (if supported). If you don't want to use the NoMachine menu, you can drag a file from the local file system and drop it on the NoMachine client window, or drag a file from the remote file system and drop it on the local desktop.
Using the NoMachine menu, you can transfer files easily and securely between the local and remote desktop through firewalls, and there is no limitation on the size of file you want to transfer.
More info here: https://www.nomachine.com/sharing-files-between-computers
Connect a disk
The 'Connect a disk' feature is a stress-free way to securely browse, access and manage all the contents of the remote or local desktop's disk or drive from within the session.
More info here: https://www.nomachine.com/accessing-files-on-local-or-remote-disk-drives