Rules ​

In the Getting Started guide, we covered the basics of rule-based matching in Clash. In this chapter, we'll cover all available rule types in the latest version of Clash.

TYPE,ARGUMENT,POLICY(,no-resolve)

The no-resolve option is optional, and it's used to skip DNS resolution for the rule. It's useful when you want to use GEOIP, IP-CIDR, IP-CIDR6, SCRIPT rules, but don't want to resolve the domain name to an IP address just yet.

Policy ​

There are four types of POLICY for now, in which:

• DIRECT: directly connects to the target through interface-name (does not lookup system route table)
• REJECT: drops the packet
• Proxy: routes the packet to the specified proxy server
• Proxy Group: routes the packet to the specified proxy group

Types of rules ​

There are a number of rules where one might find useful. The following section covers each rule type and how they should be used.

DOMAIN ​

DOMAIN,www.google.com,policy routes only www.google.com to policy.

DOMAIN-SUFFIX ​

DOMAIN-SUFFIX,youtube.com,policy routes any domain names that ends with youtube.com.

In this case, www.youtube.com and foo.bar.youtube.com will be routed to policy.

DOMAIN-KEYWORD ​

DOMAIN-KEYWORD,google,policy routes any domain names to policy that contains google.

In this case, www.google.com or googleapis.com are routed to policy.

GEOIP ​

GEOIP rules are used to route packets based on the country code of the target IP address. Clash uses MaxMind GeoLite2 database for this feature.

GEOIP,CN,policy routes any packets destined to a China IP address to policy.

IP-CIDR ​

IP-CIDR rules are used to route packets based on the destination IPv4 address of the packet.

IP-CIDR,127.0.0.0/8,DIRECT routes any packets destined to 127.0.0.0/8 to the DIRECT outbound.

IP-CIDR6 ​

IP-CIDR6 rules are used to route packets based on the destination IPv6 address of the packet.

IP-CIDR6,2620:0:2d0:200::7/32,policy routes any packets destined to 2620:0:2d0:200::7/32 to policy.

SRC-IP-CIDR ​

SRC-IP-CIDR rules are used to route packets based on the source IPv4 address of the packet.

SRC-IP-CIDR,192.168.1.201/32,DIRECT routes any packets from 192.168.1.201/32 to the DIRECT policy.

SRC-PORT ​

SRC-PORT rules are used to route packets based on the source port of the packet.

SRC-PORT,80,policy routes any packets from the port 80 to policy.

DST-PORT ​

DST-PORT rules are used to route packets based on the destination port of the packet.

DST-PORT,80,policy routes any packets to the port 80 to policy.

PROCESS-NAME ​

PROCESS-NAME rules are used to route packets based on the name of process that is sending the packet.

PROCESS-NAME,nc,DIRECT routes all packets from the process nc to the DIRECT outbound.

PROCESS-PATH ​

PROCESS-PATH rules are used to route packets based on the PATH of process that is sending the packet.

PROCESS-PATH,/bin/sh,DIRECT routes all packets from the process /bin/sh to the DIRECT outbound.

IPSET ​

IPSET rules are used to match against an IP set and route packets based on the result. According to the official website of IPSET:

IP sets are a framework inside the Linux kernel, which can be administered by the ipset utility. Depending on the type, an IP set may store IP addresses, networks, (TCP/UDP) port numbers, MAC addresses, interface names or combinations of them in a way, which ensures lightning speed when matching an entry against a set.

IPSET,chinaip,DIRECT routes all packets with destination IPs matching the chinaip IPSET to DIRECT outbound.

RULE-SET ​

RULE-SET rules are used to route packets based on the result of a rule provider. When Clash encounters this rule, it loads the rules from the specified rule provider and then matches the packet against the rules. If the packet matches any of the rules, the packet will be routed to the specified policy, otherwise the rule is skipped.

RULE-SET,my-rule-provider,DIRECT loads all rules from my-rule-provider and sends the matched packets to the DIRECT outbound.

SCRIPT ​

SCRIPT rules are special rules that are used to route packets based on the result of a script shortcut. When Clash encounters this rule, it evaluates the expression. If it returns true, the packet will be routed to the specified policy, otherwise the rule is skipped.

SCRIPT,SHORTCUT-NAME,policy routes any packets to policy if they have the shortcut evaluated true.

MATCH ​

MATCH,policy routes the rest of the packets to policy. This rule is required and is usually used as the last rule.