Pingtunnel

Pingtunnel is a tool that send TCP/UDP traffic over ICMP.

Note: This tool is only to be used for study and research, do not use it for illegal purposes

Usage

NAME:
   pingtunnel - A tool that send TCP/UDP traffic over ICMP

USAGE:
   pingtunnel [global options] command [command options] [arguments...]

VERSION:
   Git:[DEV] (go1.20)

COMMANDS:
   server   Run a PingTunnel Server
   client   Run a PingTunnel Client: Sock5 Proxy
   tunnel   Run a PingTunnel Tunnel: TCP/UDP Port Forward
   help, h  Shows a list of commands or help for one command

GLOBAL OPTIONS:
   --help, -h     show help
   --version, -v  print the version

Install server

• First prepare a server with a public IP, such as EC2 on AWS, assuming the domain name or public IP is example.com
• Download the corresponding installation package from releases, such as pingtunnel_linux64.zip, then decompress and execute with root privileges
• --key parameter is INT type, only supports numbers between 0-2147483647

wget https://github.com/honwen/pingtunnel/releases/download/v{version}/pingtunnel-linux-amd64-v{version}.tar.gz # {link of latest release}
tar -zxvf pingtunnel-linux-amd64-*.tar.gz

pingtunnel server

NAME:
   pingtunnel server - Run a PingTunnel Server

USAGE:
   pingtunnel server [command options] [arguments...]

OPTIONS:
   --key key             numeric key in [0-2147483647] (default: 0)
   --maxconn connection  max num of connections, 0 means no limit (default: 0)
   --maxthread thread    max process thread in server (default: 100)
   --maxbuffer buffer    max process thread's buffer in server (default: 1000)
   --timeout ms          timeout(ms) period for the server to initiate a connection to the destination address (default: 1000)

• (Optional) Disable system default ping

sysctl -w net.ipv4.icmp_echo_ignore_all=1
# or
echo 1 > /proc/sys/net/ipv4/icmp_echo_ignore_all

Install the client

• Download the corresponding installation package from releases, such as pingtunnel_windows64.zip, and decompress it
• Then run with administrator privileges. The commands corresponding to different forwarding functions are as follows.
• If you see a log of ping pong, the connection is normal
• --key parameter is INT type, only supports numbers between 0-2147483647

Client: Sock5 Proxy

pingtunnel client -l :1080 -s example.com

NAME:
   pingtunnel client - Run a PingTunnel Client: Sock5 Proxy

USAGE:
   pingtunnel client [command options] [arguments...]

OPTIONS:
   -l address, --socks address   Local address, traffic sent to this port will be forwarded to the server (default: ":1080")
   -s address, --server address  The address of the server, the traffic will be forwarded to this server through the tunnel (default: "exaple.com")
   --key key                     numeric key in [0-2147483647] (default: 0)
   --tcp_bs bytes                Tcp send and receive buffer size (bytes) (default: 1048576)
   --tcp_mw window               The maximum window of tcp (default: 20000)
   --tcp_rst buffer              max process thread's buffer in server (default: 1000)
   --tcp_gz value                tcp will compress data when the packet exceeds this size, 0 means no compression (default: 0)
   --timeout s                   timeout(s) period for the server to initiate a connection to the destination address (default: 60)

Tunnel: TCP/UDP Port Forward

NAME:
   pingtunnel tunnel - Run a PingTunnel Tunnel: TCP/UDP Port Forward

USAGE:
   pingtunnel tunnel [command options] [arguments...]

OPTIONS:
   -l address, --listen address  Local address, traffic sent to this port will be forwarded to the server (default: ":5300")
   -t address, --target address  Destination address forwarded by the remote server, traffic will be forwarded to this address (default: "8.8.8.8:53")
   -u, --udp                     forward UDP if defined
   -s address, --server address  The address of the server, the traffic will be forwarded to this server through the tunnel (default: "exaple.com")
   --key key                     numeric key in [0-2147483647] (default: 0)
   --tcp_bs bytes                Tcp send and receive buffer size (bytes) (default: 1048576)
   --tcp_mw window               The maximum window of tcp (default: 20000)
   --tcp_rst buffer              max process thread's buffer in server (default: 1000)
   --tcp_gz value                tcp will compress data when the packet exceeds this size, 0 means no compression (default: 0)
   --timeout s                   timeout(s) period for the server to initiate a connection to the destination address (default: 60)

• TCP

  pingtunnel tunnel -l :5300 -t 8.8.8.8:53 -s example.com

• UDP

  pingtunnel tunnel -l :5300 -t 8.8.8.8:53 -s example.com -u

Use Docker

It can also be started directly with docker, which is more convenient. Same parameters as above

• server:

docker run -d --name ptS --privileged --restart=unless-stopped --network host \
  -e ACTION=server -e ARGS=--key=11223344 \
  pingtunnel

• client:

docker run -d --name ptC --restart=unless-stopped -p 1080:1080 \
  -e ACTION=client -e ARGS='-s=172.17.0.1 --key=11223344' \
  pingtunnel

Thanks for free JetBrains Open Source license