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One of Rust's promises is "if it compiles, it works". However, there are certain situations in which this isn't true. In particular, when using dynamic typing patterns where trait objects are downcast to concrete types, having two versions of the same dependency can silently break things. This happened in #7379 where I forgot to patch a certain Sentry dependency. A similar problem exists with our `tracing-stackdriver` dependency (see #7241). Lastly, duplicate dependencies increase the compile-times of a project, so we should aim for having as few duplicate versions of a particular dependency as possible in our dependency graph. This PR introduces `cargo deny`, a linter for Rust dependencies. In addition to linting for duplicate dependencies, it also enforces that all dependencies are compatible with an allow-list of licenses and it warns when a dependency is referred to from multiple crates without introducing a workspace dependency. Thanks to existing tooling (https://github.com/mainmatter/cargo-autoinherit), transitioning all dependencies to workspace dependencies was quite easy. Resolves: #7241.
gateway
This crate houses the Firezone gateway.
Building
You can build the gateway using: cargo build --release --bin firezone-gateway
You should then find a binary in target/release/firezone-gateway.
Running
The Firezone Gateway supports Linux only. To run the Gateway binary on your Linux host:
- Generate a new Gateway token from the "Gateways" section of the admin portal and save it in your secrets manager.
- Ensure the
FIREZONE_TOKEN=<gateway_token>environment variable is set securely in your Gateway's shell environment. The Gateway requires this variable at startup. - Set
FIREZONE_IDto a unique string to identify this gateway in the portal, e.g.export FIREZONE_ID=$(uuidgen). The Gateway requires this variable at startup. - Now, you can start the Gateway with:
firezone-gateway
If you're running as a non-root user, you'll need the CAP_NET_ADMIN capability
to open /dev/net/tun. You can add this to the gateway binary with:
sudo setcap 'cap_net_admin+eip' /path/to/firezone-gateway
Ports
The gateway requires no open ports. Connections automatically traverse NAT with STUN/TURN via the relay.