Clash
A rule-based tunnel in Go.
## Features
- Local HTTP/HTTPS/SOCKS server with authentication support
- VMess, Shadowsocks, Trojan, Snell protocol support for remote connections
- Built-in DNS server that aims to minimize DNS pollution attack impact, supports DoH/DoT upstream and fake IP.
- Rules based off domains, GEOIP, IPCIDR or Process to forward packets to different nodes
- Remote groups allow users to implement powerful rules. Supports automatic fallback, load balancing or auto select node based off latency
- Remote providers, allowing users to get node lists remotely instead of hardcoding in config
- Netfilter TCP redirecting. Deploy Clash on your Internet gateway with `iptables`.
- Comprehensive HTTP RESTful API controller
## Getting Started
Documentations are now moved to [GitHub Wiki](https://github.com/Dreamacro/clash/wiki).
## Advanced usage for this branch
### DNS configuration
Support resolve ip with a proxy tunnel.
Support `geosite` with `fallback-filter`.
```yaml
dns:
enable: true
use-hosts: true
ipv6: false
enhanced-mode: fake-ip
fake-ip-range: 198.18.0.1/16
listen: 127.0.0.1:6868
default-nameserver:
- 119.29.29.29
- 114.114.114.114
nameserver:
- https://doh.pub/dns-query
- tls://223.5.5.5:853
fallback:
- 'https://1.0.0.1/dns-query#Proxy' # append the proxy adapter name to the end of DNS URL with '#' prefix.
- 'tls://8.8.4.4:853#Proxy'
fallback-filter:
geoip: false
geosite:
- gfw # `geosite` filter only use fallback server to resolve ip, prevent DNS leaks to untrusted DNS providers.
domain:
- +.example.com
ipcidr:
- 0.0.0.0/32
```
### TUN configuration
Supports macOS, Linux and Windows.
On Windows, you should download the [Wintun](https://www.wintun.net) driver and copy `wintun.dll` into the system32 directory.
```yaml
# Enable the TUN listener
tun:
enable: true
stack: gvisor # System or gVisor
# device: tun://utun8 # or fd://xxx, it's optional
dns-hijack:
- 0.0.0.0:53 # hijack all public
auto-route: true # auto set global route
```
### Rules configuration
- Support rule `GEOSITE`.
- Support `multiport` condition for rule `SRC-PORT` and `DST-PORT`.
- Support `network` condition for all rules.
- Support `process` condition for all rules.
- Support source IPCIDR condition for all rules, just append to the end.
The `GEOIP` databases via [https://github.com/Loyalsoldier/geoip](https://raw.githubusercontent.com/Loyalsoldier/geoip/release/Country.mmdb).
The `GEOSITE` databases via [https://github.com/Loyalsoldier/v2ray-rules-dat](https://github.com/Loyalsoldier/v2ray-rules-dat/releases/latest/download/geosite.dat).
```yaml
rules:
# network condition for all rules
- DOMAIN-SUFFIX,example.com,DIRECT,tcp
- DOMAIN-SUFFIX,example.com,REJECT,udp
# process condition for all rules (add 'P:' prefix)
- DOMAIN-SUFFIX,example.com,REJECT,P:Google Chrome Helper
# multiport condition for rules SRC-PORT and DST-PORT
- DST-PORT,123/136/137-139,DIRECT,udp
# rule GEOSITE
- GEOSITE,category-ads-all,REJECT
- GEOSITE,icloud@cn,DIRECT
- GEOSITE,apple@cn,DIRECT
- GEOSITE,apple-cn,DIRECT
- GEOSITE,microsoft@cn,DIRECT
- GEOSITE,facebook,PROXY
- GEOSITE,youtube,PROXY
- GEOSITE,geolocation-cn,DIRECT
- GEOSITE,geolocation-!cn,PROXY
# source IPCIDR condition for all rules in gateway proxy
#- GEOSITE,geolocation-!cn,REJECT,192.168.1.88/32,192.168.1.99/32
- GEOIP,telegram,PROXY,no-resolve
- GEOIP,lan,DIRECT,no-resolve
- GEOIP,cn,DIRECT
- MATCH,PROXY
```
### Proxies configuration
Support outbound transport protocol `VLESS`.
The XTLS only support TCP transport by the XRAY-CORE.
```yaml
proxies:
- name: "vless-tcp"
type: vless
server: server
port: 443
uuid: uuid
network: tcp
servername: example.com
# flow: xtls-rprx-direct # xtls-rprx-origin # enable XTLS
# skip-cert-verify: true
```
### IPTABLES auto-configuration
Only work on Linux OS who support `iptables`, Clash will auto-configuration iptables for tproxy listener when `tproxy-port` value isn't zero.
If `TPROXY` is enabled, the `TUN` must be disabled.
```yaml
# Enable the TPROXY listener
tproxy-port: 9898
# Disable the TUN listener
tun:
enable: false
```
Run Clash as a daemon.
Create the systemd configuration file at /etc/systemd/system/clash.service:
```shell
[Unit]
Description=Clash daemon, A rule-based proxy in Go.
After=network.target
[Service]
Type=simple
CapabilityBoundingSet=cap_net_admin
Restart=always
ExecStart=/usr/local/bin/clash -d /etc/clash
[Install]
WantedBy=multi-user.target
```
Launch clashd on system startup with:
```shell
$ systemctl enable clash
```
Launch clashd immediately with:
```shell
$ systemctl start clash
```
### Display Process name
Add field `Process` to `Metadata` and prepare to get process name for Restful API `GET /connections`.
To display process name in GUI please use https://yaling888.github.io/yacd/.
## Development
If you want to build an application that uses clash as a library, check out the the [GitHub Wiki](https://github.com/Dreamacro/clash/wiki/use-clash-as-a-library)
## Credits
* [riobard/go-shadowsocks2](https://github.com/riobard/go-shadowsocks2)
* [v2ray/v2ray-core](https://github.com/v2ray/v2ray-core)
* [WireGuard/wireguard-go](https://github.com/WireGuard/wireguard-go)
## License
This software is released under the GPL-3.0 license.
[](https://app.fossa.io/projects/git%2Bgithub.com%2FDreamacro%2Fclash?ref=badge_large)