natproxy

Introduction

Natproxy is an intranet penetration tool that can connect a personal computer or server in a LAN to the public network, and supports TCP/UDP traffic forwarding and upper-layer TCP protocols, such as SSH, HTTP/HTTPS, etc.

Quick start

The main branch is a custom protocol

proto3 protocol needs to switch proto3 branch

Download and build

git clone https://github.com/PonKing66/natproxy
cd natproxy
mvn clean package -Dmaven.test.skip=true

Run steps

1. Enter the ../build/natproxy directory
2. Run the client on the proxy client
3. Run the server on a proxy server

Detailed configuration

Proxy client configuration

 server :
  host : 127.0.0.1 # 代理服务器 IP
  port : 20001 # 代理服务器端口
client :
  key : 721b2e485683bd87c32f3c208f787a626c7397a759146a93be30e15ad3193084 # 认证客户端 key

Proxy server configuration

 server :
  port : 20001 # 代理服务器端口
  keys :
    - 721b2e485683bd87c32f3c208f787a626c7397a759146a93be30e15ad3193084 # 合法登录客户端 Key，与代理客户端配置中的相同
  proxy :
    - host : 192.168.31.96 # 目标服务器 IP
      intranetPort : 22 # 被代理端口（目标服务器端口）
      extranetPort : 22222 # 代理服务器暴露端口（用户访问端口）
      type : tcp # 代理转发协议
      key : 721b2e485683bd87c32f3c208f787a626c7397a759146a93be30e15ad3193084 # 指定开启代理客户端
    - host : 192.168.31.96
      intranetPort : 3306
      extranetPort : 33006
      type : tcp
      key : 721b2e485683bd87c32f3c208f787a626c7397a759146a93be30e15ad3193084
    - host : 192.168.31.96
      intranetPort : 44444
      extranetPort : 55555
      type : udp
      key : 721b2e485683bd87c32f3c208f787a626c7397a759146a93be30e15ad3193084

agency principle

Acknowledgments

Special thanks to p2p-nat for the reference and inspiration