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Clash
Clash

A rule-based tunnel in Go.

Github Actions

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, IP CIDR or ports 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.

Advanced usage for this fork repository

TUN configuration

Support macOS Linux and Windows.

For Windows, you should download the Wintun driver and copy wintun.dll into the System32 directory.

# Enable the TUN listener
tun:
  enable: true
  stack: system # system or gvisor
  dns-listen: 0.0.0.0:53 # additional dns server listen on TUN
  auto-route: true # auto set global route

Rules configuration

  • Support rule GEOSITE
  • Support rule GEOIP not match condition
  • Support network condition for all rules

The GEOSITE and GEOIP databases via https://github.com/Loyalsoldier/v2ray-rules-dat

rules:
  # network condition for rules
  - DOMAIN-SUFFIX,tabao.com,DIRECT,tcp
  - DST-PORT,123,DIRECT,udp
  
  # rule GEOSITE
  - GEOSITE,category-ads-all,REJECT
  - GEOSITE,icloud@cn,DIRECT
  - GEOSITE,apple@cn,DIRECT
  - GEOSITE,microsoft@cn,DIRECT
  - GEOSITE,youtube,PROXY
  - GEOSITE,geolocation-cn,DIRECT
  #- GEOSITE,geolocation-!cn,PROXY

  - GEOIP,private,DIRECT,no-resolve
  - GEOIP,cn,DIRECT
    
  # Not match condition for rule GEOIP
  #- GEOIP,!cn,PROXY

  - MATCH,PROXY

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.

When TPROXY is enabled, the TUN must be disabled.

# Enable the TPROXY listener
tproxy-port: 9898
# Disable the TUN listener
tun:
  enable: false

Create user give name clash, run $ sudo useradd -M clash in command line.

Run Clash by user clash as a daemon.

Create the systemd configuration file at /etc/systemd/system/clash.service:

[Unit]
Description=Clash daemon, A rule-based proxy in Go.
After=network.target

[Service]
Type=simple
User=clash
Group=clash
CapabilityBoundingSet=cap_net_admin
AmbientCapabilities=cap_net_admin
Restart=always
ExecStart=/usr/local/bin/clash -d /etc/clash

[Install]
WantedBy=multi-user.target

Launch clashd on system startup with:

$ systemctl enable clash

Launch clashd immediately with:

$ 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/

Premium Release

Release

Development

If you want to build an application that uses clash as a library, check out the the GitHub Wiki

Credits

License

This software is released under the GPL-3.0 license.

FOSSA Status

TODO

  • Complementing the necessary rule operators
  • Redir proxy
  • UDP support
  • Connection manager