shadowsocks-libev

Intro

Shadowsocks-libev is a lightweight secured scoks5 proxy for embedded devices and low end boxes.

It is a port of shadowsocks created by @clowwindy maintained by @madeye.

Current version: 1.2

Features

Shadowsocks-libev is writen in pure C and only depends on libev.

When statically linked and packaged for OpenWRT, the total package size is 23KB. In normal usage, the memory consumption is about 600KB and the CPU utilization is no more than 5% on a low-end router (Buffalo WHR-G300N V2 with a 400MHz MIPS CPU, 32MB memory and 4MB flash).

Installation

Build the binary like this:

    sudo apt-get install build-essential autoconf libtool
    ./configure && make
    sudo make install

Usage

usage:

    ss-local -s server_host -p server_port -l local_port -k password
       [-m encrypt_method] [-f pid_file] [-t timeout] [-c config_file]

    ss-redir -s server_host -p server_port -l local_port -k password
       [-m encrypt_method] [-f pid_file] [-t timeout] [-c config_file]

    ss-server -s server_host -p server_port -k password
       [-m encrypt_method] [-f pid_file] [-t timeout] [-c config_file]

options:

    encrypt_method:     table, rc4
          pid_file:     valid path to the pid file
           timeout:     socket timeout in senconds
       config_file:     json format config file

notes:

    ss-redir provides a transparent proxy function and only works on the 
    Linux platform with iptables.

Advanced usage

The latest shadowsocks-libev has provided a transparent mode. You can configure your linux based box or router to proxy all tcp traffic transparently.

# Create new chain
root@Wrt:~# iptables -t nat -N SHADOWSOCKS

# Ignore your shadowsocks server's addresses
# It's very IMPORTANT, just be careful.
root@Wrt:~# iptables -t nat -A SHADOWSOCKS -d 123.123.123.123 -j RETURN

# Ignore LANs and any other addresses you'd like to bypass the proxy
# See Wikipedia and RFC5735 for full list of reserved networks.
# See ashi009/bestroutetb for a highly optimized CHN route list.
root@Wrt:~# iptables -t nat -A SHADOWSOCKS -d 0.0.0.0/8 -j RETURN
root@Wrt:~# iptables -t nat -A SHADOWSOCKS -d 10.0.0.0/8 -j RETURN
root@Wrt:~# iptables -t nat -A SHADOWSOCKS -d 127.0.0.0/8 -j RETURN
root@Wrt:~# iptables -t nat -A SHADOWSOCKS -d 169.254.0.0/16 -j RETURN
root@Wrt:~# iptables -t nat -A SHADOWSOCKS -d 172.16.0.0/12 -j RETURN
root@Wrt:~# iptables -t nat -A SHADOWSOCKS -d 192.168.0.0/16 -j RETURN
root@Wrt:~# iptables -t nat -A SHADOWSOCKS -d 224.0.0.0/4 -j RETURN
root@Wrt:~# iptables -t nat -A SHADOWSOCKS -d 240.0.0.0/4 -j RETURN

# Anything else should be redirected to shadowsocks's local port
root@Wrt:~# iptables -t nat -A SHADOWSOCKS -p tcp -j REDIRECT --to-ports 12345

# Apply the rules
root@Wrt:~# iptables -t nat -A OUTPUT -p tcp -j SHADOWSOCKS

# Start the shadowsocks-redir
root@Wrt:~# ss-redir -c /etc/config/shadowsocks.json -f /var/run/shadowsocks.pid