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Tailscale

Changes in sing-box 1.14.0

ssh_server

Changes in sing-box 1.13.0

relay_server_port
relay_server_static_endpoints
system_interface
system_interface_name
system_interface_mtu
advertise_tags

Since sing-box 1.12.0

Structure

{
  "type": "tailscale",
  "tag": "ts-ep",
  "state_directory": "",
  "auth_key": "",
  "control_url": "",
  "ephemeral": false,
  "hostname": "",
  "accept_routes": false,
  "exit_node": "",
  "exit_node_allow_lan_access": false,
  "advertise_routes": [],
  "advertise_exit_node": false,
  "advertise_tags": [],
  "relay_server_port": 0,
  "relay_server_static_endpoints": [],
  "system_interface": false,
  "system_interface_name": "",
  "system_interface_mtu": 0,
  "udp_timeout": "5m",
  "ssh_server": false,

  ... // Dial Fields
}

Fields

state_directory

The directory where the Tailscale state is stored.

tailscale is used by default.

Example: $HOME/.tailscale

auth_key

Note

Auth key is not required. By default, sing-box will log the login URL (or popup a notification on graphical clients).

The auth key to create the node. If the node is already created (from state previously stored), then this field is not used.

control_url

The coordination server URL.

https://controlplane.tailscale.com is used by default.

ephemeral

Indicates whether the instance should register as an Ephemeral node (https://tailscale.com/s/ephemeral-nodes).

hostname

The hostname of the node.

System hostname is used by default.

Example: localhost

accept_routes

Indicates whether the node should accept routes advertised by other nodes.

exit_node

The exit node name or IP address to use.

exit_node_allow_lan_access

Note

When the exit node does not have a corresponding advertised route, private traffics cannot be routed to the exit node even if exit_node_allow_lan_access is set.

Indicates whether locally accessible subnets should be routed directly or via the exit node.

CIDR prefixes to advertise into the Tailscale network as reachable through the current node.

Example: ["192.168.1.1/24"]

Indicates whether the node should advertise itself as an exit node.

Since sing-box 1.13.0

Tags to advertise for this node, for ACL enforcement purposes.

Example: ["tag:server"]

relay_server_port

Since sing-box 1.13.0

The port to listen on for incoming relay connections from other Tailscale nodes.

relay_server_static_endpoints

Since sing-box 1.13.0

Static endpoints to advertise for the relay server.

system_interface

Since sing-box 1.13.0

Create a system TUN interface for Tailscale.

system_interface_name

Since sing-box 1.13.0

Custom TUN interface name. By default, tailscale (or utun on macOS) will be used.

system_interface_mtu

Since sing-box 1.13.0

Override the TUN MTU. By default, Tailscale's own MTU is used.

udp_timeout

UDP NAT expiration time.

5m will be used by default.

ssh_server

Since sing-box 1.14.0

Run a Tailscale SSH server on tailnet port 22.

Access is controlled by the SSH ACL in the Tailscale admin console, which maps each connection to a local user. How that user is resolved, and which users are allowed, depends on the platform:

  • Linux and macOS: the user is resolved from the system user database. Switching to a user other than the one sing-box runs as requires running as root; without root, sessions are limited to the current user.
  • Windows: sessions run as the sing-box process identity; the mapped user is not impersonated, so a session mapped to a different local account is refused.
  • Android: the user is resolved by the app rather than the system user database. root is the superuser (UID 0) and shell is the ADB shell user (UID 2000); every other name is resolved as the package name of an installed application, running as that application's UID with its data directory as the home directory, so the target application must be installed. termux is a shortcut for com.termux, and sing-box for the app's own package name; when Termux is installed, the root and termux users load the Termux environment. Running as the sing-box application itself requires no root, while any other user requires granted root access; without root, sessions are limited to the sing-box user.
  • macOS: the SSH server is only available in the standalone version and requires the Root Helper; the App Store version is not supported.
  • iOS and tvOS: not yet supported.

Object format:

{
  "enabled": true,
  "disable_pty": false,
  "disable_sftp": false,
  "disable_forwarding": false
}

Setting ssh_server value to true is equivalent to { "enabled": true }.

ssh_server.enabled

Enable the SSH server.

ssh_server.disable_pty

Refuse PTY allocation requests.

ssh_server.disable_sftp

Refuse the SFTP subsystem.

ssh_server.disable_forwarding

Refuse local and remote TCP and Unix-socket forwarding, including SSH agent forwarding.

Dial Fields

Note

Dial Fields in Tailscale endpoints only control how it connects to the control plane and have nothing to do with actual connections.

See Dial Fields for details.