GO Simple Tunnel

GOST, or GO Simple Tunnel, is a flexible tunneling and proxy tool written in Go for building secure traffic forwarding chains. It supports proxying, port forwarding, reverse proxying, and tunnel-based access to services behind NAT or firewalls. The project is designed around protocol composition, allowing users to combine multiple protocols into multi-level forwarding chains. It can handle TCP and UDP forwarding, transparent proxying, DNS proxying, TUN/TAP workflows, and tun2socks scenarios. GOST also includes operational features such as load balancing, routing control, admission control, rate limiting, dynamic configuration, Prometheus metrics, and a Web API. It is useful for network engineers, developers, and self-hosters who need a configurable, cross-platform networking toolkit for complex proxy and tunnel setups.