mirror of
https://github.com/SagerNet/sing-box.git
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193 lines
4.3 KiB
Markdown
193 lines
4.3 KiB
Markdown
!!! error ""
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Only supported on Linux, Windows and macOS.
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### Structure
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```json
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{
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"type": "tun",
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"tag": "tun-in",
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"interface_name": "tun0",
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"inet4_address": "172.19.0.1/30",
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"inet6_address": "fdfe:dcba:9876::1/126",
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"mtu": 9000,
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"auto_route": true,
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"strict_route": true,
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"inet4_route_address": [
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"0.0.0.0/1",
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"128.0.0.0/1"
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],
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"inet6_route_address": [
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"::/1",
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"8000::/1"
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],
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"endpoint_independent_nat": false,
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"stack": "system",
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"include_uid": [
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0
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],
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"include_uid_range": [
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"1000-99999"
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],
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"exclude_uid": [
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1000
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],
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"exclude_uid_range": [
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"1000-99999"
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],
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"include_android_user": [
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0,
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10
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],
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"include_package": [
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"com.android.chrome"
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],
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"exclude_package": [
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"com.android.captiveportallogin"
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],
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...
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// Listen Fields
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}
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```
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!!! note ""
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You can ignore the JSON Array [] tag when the content is only one item
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!!! warning ""
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If tun is running in non-privileged mode, addresses and MTU will not be configured automatically, please make sure the settings are accurate.
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### Fields
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#### interface_name
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Virtual device name, automatically selected if empty.
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#### inet4_address
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==Required==
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IPv4 prefix for the tun interface.
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#### inet6_address
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IPv6 prefix for the tun interface.
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#### mtu
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The maximum transmission unit.
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#### auto_route
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Set the default route to the Tun.
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!!! error ""
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To avoid traffic loopback, set `route.auto_detect_interface` or `route.default_interface` or `outbound.bind_interface`
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!!! note "Use with Android VPN"
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By default, VPN takes precedence over tun. To make tun go through VPN, enable `route.override_android_vpn`.
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#### strict_route
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Enforce strict routing rules when `auto_route` is enabled:
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*In Linux*:
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* Let unsupported network unreachable
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* Route all connections to tun
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It prevents address leaks and makes DNS hijacking work on Android and Linux with systemd-resolved, but your device will
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not be accessible by others.
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*In Windows*:
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* Add firewall rules to prevent DNS leak caused by
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Windows' [ordinary multihomed DNS resolution behavior](https://learn.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2008-R2-and-2008/dd197552%28v%3Dws.10%29)
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It may prevent some applications (such as VirtualBox) from working properly in certain situations.
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#### inet4_route_address
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Use custom routes instead of default when `auto_route` is enabled.
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#### inet6_route_address
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Use custom routes instead of default when `auto_route` is enabled.
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#### endpoint_independent_nat
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!!! info ""
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This item is only available on the gvisor stack, other stacks are endpoint-independent NAT by default.
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Enable endpoint-independent NAT.
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Performance may degrade slightly, so it is not recommended to enable on when it is not needed.
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#### udp_timeout
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UDP NAT expiration time in seconds, default is 300 (5 minutes).
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#### stack
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TCP/IP stack.
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| Stack | Description | Status |
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|------------------|----------------------------------------------------------------------------------|-------------------|
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| system (default) | Sometimes better performance | recommended |
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| gVisor | Better compatibility, based on [google/gvisor](https://github.com/google/gvisor) | recommended |
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| LWIP | Based on [eycorsican/go-tun2socks](https://github.com/eycorsican/go-tun2socks) | upstream archived |
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!!! warning ""
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gVisor and LWIP stacks is not included by default, see [Installation](/#installation).
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#### include_uid
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!!! error ""
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UID rules are only supported on Linux and require auto_route.
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Limit users in route. Not limited by default.
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#### include_uid_range
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Limit users in route, but in range.
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#### exclude_uid
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Exclude users in route.
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#### exclude_uid_range
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Exclude users in route, but in range.
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#### include_android_user
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!!! error ""
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Android user and package rules are only supported on Android and require auto_route.
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Limit android users in route.
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| Common user | ID |
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|--------------|-----|
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| Main | 0 |
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| Work Profile | 10 |
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#### include_package
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Limit android packages in route.
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#### exclude_package
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Exclude android packages in route.
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### Listen Fields
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See [Listen Fields](/configuration/shared/listen) for details.
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