/etc/ufw/applications.d/nitroshare is in nitroshare 0.3.1-1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 | [NitroShare]
title=File Transfer Application
description=Cross-platform network file transfer application
ports=40816/udp|40818/tcp
|