go-shadowsocks2

go-shadowsocks2- with (salamander-OBFS)

This Fork Adding salamander obfuscation to go-shadowsocks2.

Salamander Obfuscation is a Hysteria2 technique for obfuscation and bypassing blocking.

Adding this simple technique to go-shadowsock2s make it more powerful in bypass DPI.

In this fork, Salamander technology occurs internally without any additional settings.

A fresh implementation of Shadowsocks in Go.

Features

• SOCKS5 proxy with UDP Associate
• Support for Netfilter TCP redirect on Linux (IPv6 should work but not tested)
• Support for Packet Filter TCP redirect on MacOS/Darwin (IPv4 only)
• UDP tunneling (e.g. relay DNS packets)
• TCP tunneling (e.g. benchmark with iperf3)
• SIP003 plugins

Install

Install from source

go install -u github.com/samanajd2/go-shadowsocks2@latest

or download binary, linux-amd64 for example

wget https://github.com/samanajd2/go-shadowsocks2/releases/download/1.0.0/shadowsocks2-linux-amd64 -O shadowsocks2

chmod +x shadowsocks2

Basic Usage

Server

Start a server listening on port 8488 using AEAD_CHACHA20_POLY1305 AEAD cipher with password your-password.

go-shadowsocks2 -s 'ss://AEAD_CHACHA20_POLY1305:your-password@:8488' -verbose

Client

Start a client connecting to the above server. The client listens on port 1080 for incoming SOCKS5 connections, and tunnels both UDP and TCP on port 8053 and port 8054 to 8.8.8.8:53 and 8.8.4.4:53 respectively.

go-shadowsocks2 -c 'ss://AEAD_CHACHA20_POLY1305:your-password@[server_address]:8488' \
    -verbose -socks :1080 -u -udptun :8053=8.8.8.8:53,:8054=8.8.4.4:53 \
                             -tcptun :8053=8.8.8.8:53,:8054=8.8.4.4:53

Replace [server_address] with the server's public address.

Advanced Usage

Netfilter TCP redirect on Linux

The client offers -redir and -redir6 (for IPv6) options to handle TCP connections redirected by Netfilter on Linux. The feature works similar to ss-redir from shadowsocks-libev.

Start a client listening on port 1082 for redirected TCP connections and port 1083 for redirected TCP IPv6 connections.

go-shadowsocks2 -c 'ss://AEAD_CHACHA20_POLY1305:your-password@[server_address]:8488' -redir :1082 -redir6 :1083

TCP tunneling

The client offers -tcptun [local_addr]:[local_port]=[remote_addr]:[remote_port] option to tunnel TCP. For example it can be used to proxy iperf3 for benchmarking.

Start iperf3 on the same machine with the server.

iperf3 -s

By default iperf3 listens on port 5201.

Start a client on the same machine with the server. The client listens on port 1090 for incoming connections and tunnels to localhost:5201 where iperf3 is listening.

go-shadowsocks2 -c 'ss://AEAD_CHACHA20_POLY1305:your-password@[server_address]:8488' -tcptun :1090=localhost:5201

Start iperf3 client to connect to the tunneld port instead

iperf3 -c localhost -p 1090

SIP003 Plugins (Experimental)

Both client and server support SIP003 plugins. Use -plugin and -plugin-opts parameters to enable.

Client:

go-shadowsocks2 -c 'ss://AEAD_CHACHA20_POLY1305:your-password@[server_address]:8488' \
    -verbose -socks :1080 -u -plugin v2ray

Server:

go-shadowsocks2 -s 'ss://AEAD_CHACHA20_POLY1305:your-password@:8488' -verbose \
    -plugin v2ray -plugin-opts "server"

Note-1:

It will look for the plugin in the current directory first, then $PATH.

UDP connections will not be affected by SIP003.

Note-2:

All stream cipher was removed.