173 lines
7.7 KiB
Markdown
173 lines
7.7 KiB
Markdown
<p align="center">
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<img src="docs/brand/ihasvpn-mark-256.png" width="128" height="128" alt="ihasvpn: an orange cat peeking over the edge of a teal shield">
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</p>
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# ihasvpn
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A self-hosted WireGuard server with a secure web console, in one container.
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**[ihasvpn.org](https://ihasvpn.org)** shows what it does and what it looks like.
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Start it, open the console, create a peer, scan the QR code. ihasvpn runs the
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tunnel on the kernel's WireGuard module, keeps the NAT rules and forwarding
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sysctls in order, and gives you a dashboard that shows who is connected, how
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much they are moving, and a button to cut them off.
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## What it does
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- **Peers.** Create, edit, disable, delete. The server generates the key
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pair (and a preshared key) and shows a QR code and a `.conf` download; or
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the client brings its own public key and the private key never leaves the
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device. Pin a tunnel address or let ihasvpn allocate one. Set an expiry and the
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peer is disconnected on time. Rotate keys in one click.
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- **Who is connected.** Live status from the interface counters every two
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seconds: endpoint, last handshake, session length, current rate, total
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transfer. Usage history in five-minute buckets, per peer and overall, kept
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for 90 days.
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- **Disconnect them.** *Disconnect* removes the peer from the interface and
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keeps it off until you enable it again. *Reset session* drops the current
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session and lets the client handshake afresh.
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- **Fast.** Kernel data plane over netlink, no user-space hop. Tuned
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sysctls, TCP MSS clamping, optional host networking. Falls back to
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`wireguard-go` on hosts without the module and tells you so. See
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[docs/performance.md](docs/performance.md).
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- **Locked down.** argon2id passwords, two-factor authentication with
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recovery codes, viewer and administrator roles, rate-limited login,
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same-origin enforcement, strict CSP, built-in TLS if you want it, and an
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audit log of every change (including every time a peer's configuration is
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viewed). See [SECURITY.md](SECURITY.md).
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- **Observable.** `/api/health` for a liveness probe and `/metrics` in
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Prometheus format, guarded by a bearer token.
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- **Self-contained.** One static Go binary, one SQLite file under `/data`,
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no other services. Multi-arch image for amd64 and arm64.
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## Screenshots
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The dashboard: who is connected, live throughput, traffic history and the
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server's details.
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Peers, with live rates and totals. Connected peers sort to the top.
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A peer: status, endpoint, handshake, keys and usage, with disconnect, session
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reset and key rotation a click away.
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The same peer's configuration: scan the QR code with the WireGuard app, copy
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the text, or download the `.conf`.
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Settings: endpoint, client defaults, peer isolation and MSS clamping. Changes
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apply without a restart.
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## Quick start
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```sh
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curl -O https://raw.githubusercontent.com/Coffey-Labs/ihasvpn/main/docker-compose.yml
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# edit IHASVPN_ENDPOINT (your public hostname or IP), then:
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docker compose up -d
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```
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Open <http://localhost:51821>, create the first administrator, and add a
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peer. Point the WireGuard app on your phone at the QR code.
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The console is bound to localhost in the compose file on purpose. To reach
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it from elsewhere, either set `IHASVPN_TLS_SELF_SIGNED: "true"` and bind to the
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address you need, or put a TLS-terminating reverse proxy in front of it and
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list the proxy in `IHASVPN_TRUSTED_PROXIES`.
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For the fastest configuration, `docker-compose.host.yml` runs on the host
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network; [docs/performance.md](docs/performance.md) says when that is worth
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it and which host sysctls to set.
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### Requirements
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- Docker (or Podman) on a Linux host with a kernel from 5.6 on. Older kernels
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work with `wireguard-dkms` installed on the host, or fall back to the
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slower user-space data plane automatically.
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- The container needs `NET_ADMIN` and the forwarding sysctls in the compose
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file. `SYS_MODULE` is not needed unless the host has never loaded the
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module and cannot autoload it.
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- UDP port 51820 (or whatever you choose) reachable from the internet.
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## Configuration
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Infrastructure is configured through the environment; everything an
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administrator might change while the server runs lives in the database and
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is edited in the console under **Settings** (endpoint, DNS, default client
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routes, MTU, keepalive, peer isolation, MSS clamping, preshared keys).
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| Variable | Default | Meaning |
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| --- | --- | --- |
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| `IHASVPN_ENDPOINT` | | Public hostname or IP for client configs. Also asked for at first-run setup. |
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| `IHASVPN_PORT` | `51820` | UDP listen port. |
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| `IHASVPN_SUBNET` | `10.8.0.0/24` | IPv4 tunnel network; the server takes the first address. |
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| `IHASVPN_SUBNET6` | | IPv6 tunnel network, e.g. `fd42:42:42::/64`. Off when empty. |
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| `IHASVPN_DNS` | `1.1.1.1, 1.0.0.1` | Resolvers handed to clients on first run. |
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| `IHASVPN_INTERFACE` | `wg0` | Interface name. |
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| `IHASVPN_EGRESS_INTERFACE` | auto | Interface to masquerade on. Auto uses the default route. |
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| `IHASVPN_HTTP_LISTEN` | `:51821` | Console listen address. |
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| `IHASVPN_TLS_SELF_SIGNED` | `false` | Serve HTTPS with a certificate generated into `/data`. |
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| `IHASVPN_TLS_CERT`, `IHASVPN_TLS_KEY` | | Serve HTTPS with your own certificate. |
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| `IHASVPN_SECURE_COOKIES` | `false` | Mark cookies `Secure` when TLS terminates at a proxy. |
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| `IHASVPN_TRUSTED_PROXIES` | | CIDRs whose `X-Forwarded-For` is believed. |
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| `IHASVPN_METRICS_TOKEN` | | Bearer token for `/metrics`. A signed-in session works too. |
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| `IHASVPN_SESSION_IDLE` | `12h` | Sign out after this much inactivity. |
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| `IHASVPN_SESSION_MAX` | `168h` | Sign out after this long regardless. |
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| `IHASVPN_TRAFFIC_RETENTION` | `2160h` | How long usage history is kept (90 days). |
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| `IHASVPN_POLL_INTERVAL` | `2s` | How often the interface counters are read. |
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| `IHASVPN_BACKEND` | `auto` | `kernel`, `userspace` or `mock`. Auto prefers the kernel. |
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| `IHASVPN_MANAGE_FIREWALL` | `true` | Set to `false` if the host owns the NAT rules. |
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| `IHASVPN_MANAGE_SYSCTL` | `true` | Set to `false` if the host has tuned itself. |
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| `IHASVPN_DATA_DIR` | `/data` | Where the database and TLS files live. |
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| `IHASVPN_LOG_LEVEL`, `IHASVPN_LOG_JSON` | `info`, `false` | Logging. |
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## Locked out?
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```sh
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docker exec -it ihasvpn ihasvpn reset-password admin
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```
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sets a new password for that user, clears their second factor and ends
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their sessions. It runs against the same database, so no restart is needed.
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## Client setup
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Any WireGuard client works: the official apps on iOS, Android, macOS and
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Windows, `wg-quick` on Linux, and routers that speak WireGuard. Scan the QR
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code from the peer's **Configuration** tab, or download the `.conf`. The
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default configuration routes everything through the tunnel; change **Client
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routes** on the peer (or the default under Settings) to the tunnel subnet
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alone for split tunnelling.
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## API
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Everything the console does goes through `/api/…` with the session cookie.
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`GET /api/peers`, `POST /api/peers`, `GET /api/peers/{id}/config`,
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`POST /api/peers/{id}/disable` and friends are stable enough to script
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against; the shapes are in `internal/server/api.go`. A cross-site request
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without a same-origin `Sec-Fetch-Site` or `Origin` header is refused, so
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call it from the same origin or from a non-browser client.
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## Building from source
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```sh
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cd web && npm ci && npm run build && cd ..
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go build ./cmd/ihasvpn
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```
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The UI is embedded in the binary. `docker build -t ihasvpn .` does both steps.
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See [CONTRIBUTING.md](CONTRIBUTING.md) for the development loop against the
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mock data plane, which needs no privileges.
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## Licence
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AGPL-3.0-or-later. See [LICENSE](LICENSE).
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