mirror of
https://github.com/apernet/OpenGFW.git
synced 2024-09-21 12:14:08 +08:00
120 lines
3.1 KiB
Markdown
120 lines
3.1 KiB
Markdown
# 
|
|
|
|
[![License][1]][2]
|
|
|
|
[1]: https://img.shields.io/badge/License-MPL_2.0-brightgreen.svg
|
|
|
|
[2]: LICENSE
|
|
|
|
**[中文文档](README.zh.md)**
|
|
|
|
OpenGFW is a flexible, easy-to-use, open source implementation of [GFW](https://en.wikipedia.org/wiki/Great_Firewall) on
|
|
Linux that's in many ways more powerful than the real thing. It's cyber sovereignty you can have on a home router.
|
|
|
|
> [!CAUTION]
|
|
> This project is still in very early stages of development. Use at your own risk.
|
|
|
|
> [!NOTE]
|
|
> We are looking for contributors to help us with this project, especially implementing analyzers for more protocols!!!
|
|
|
|
## Features
|
|
|
|
- Full IP/TCP reassembly, various protocol analyzers
|
|
- HTTP, TLS, DNS, SSH, SOCKS5, and many more to come
|
|
- "Fully encrypted traffic" detection for Shadowsocks,
|
|
etc. (https://gfw.report/publications/usenixsecurity23/data/paper/paper.pdf)
|
|
- Trojan (proxy protocol) detection based on Trojan-killer (https://github.com/XTLS/Trojan-killer)
|
|
- [WIP] Machine learning based traffic classification
|
|
- Full IPv4 and IPv6 support
|
|
- Flow-based multicore load balancing
|
|
- Connection offloading
|
|
- Powerful rule engine based on [expr](https://github.com/expr-lang/expr)
|
|
- Flexible analyzer & modifier framework
|
|
- Extensible IO implementation (only NFQueue for now)
|
|
- [WIP] Web UI
|
|
|
|
## Use cases
|
|
|
|
- Ad blocking
|
|
- Parental control
|
|
- Malware protection
|
|
- Abuse prevention for VPN/proxy services
|
|
- Traffic analysis (log only mode)
|
|
|
|
## Usage
|
|
|
|
### Build
|
|
|
|
```shell
|
|
go build
|
|
```
|
|
|
|
### Run
|
|
|
|
```shell
|
|
export OPENGFW_LOG_LEVEL=debug
|
|
./OpenGFW -c config.yaml rules.yaml
|
|
```
|
|
|
|
### Example config
|
|
|
|
```yaml
|
|
io:
|
|
queueSize: 1024
|
|
local: true # set to false if you want to run OpenGFW on FORWARD chain
|
|
|
|
workers:
|
|
count: 4
|
|
queueSize: 16
|
|
tcpMaxBufferedPagesTotal: 4096
|
|
tcpMaxBufferedPagesPerConn: 64
|
|
udpMaxStreams: 4096
|
|
```
|
|
|
|
### Example rules
|
|
|
|
[Analyzer properties](docs/Analyzers.md)
|
|
|
|
For syntax of the expression language, please refer
|
|
to [Expr Language Definition](https://expr-lang.org/docs/language-definition).
|
|
|
|
```yaml
|
|
- name: block v2ex http
|
|
action: block
|
|
expr: string(http?.req?.headers?.host) endsWith "v2ex.com"
|
|
|
|
- name: block v2ex https
|
|
action: block
|
|
expr: string(tls?.req?.sni) endsWith "v2ex.com"
|
|
|
|
- name: block shadowsocks
|
|
action: block
|
|
expr: fet != nil && fet.yes
|
|
|
|
- name: block trojan
|
|
action: block
|
|
expr: trojan != nil && trojan.yes
|
|
|
|
- name: v2ex dns poisoning
|
|
action: modify
|
|
modifier:
|
|
name: dns
|
|
args:
|
|
a: "0.0.0.0"
|
|
aaaa: "::"
|
|
expr: dns != nil && dns.qr && any(dns.questions, {.name endsWith "v2ex.com"})
|
|
|
|
- name: block google.com:80 via SOCKS5
|
|
action: block
|
|
expr: string(socks5?.req?.addr) endsWith "google.com" && socks5?.req?.port == 80
|
|
```
|
|
|
|
#### Supported actions
|
|
|
|
- `allow`: Allow the connection, no further processing.
|
|
- `block`: Block the connection, no further processing.
|
|
- `drop`: For UDP, drop the packet that triggered the rule, continue processing future packets in the same flow. For
|
|
TCP, same as `block`.
|
|
- `modify`: For UDP, modify the packet that triggered the rule using the given modifier, continue processing future
|
|
packets in the same flow. For TCP, same as `allow`.
|