FastTunnel is a high-performance cross-platform intranet penetration tool. With it, you can expose intranet services to the public network for yourself or anyone to access. Unlike other penetration tools, the FastTunnel project is committed to creating an easy-to-extensible and easy-to-maintain intranet penetration framework. You can build your own penetration application by referencing the nuget package of FastTunnel.Core, and target the business extension functions you need.