puxxustc / iosocks

A lightweight tunnel proxy, just a toy

iosocks

A lightweight tunnel proxy, provides a SOCKS5 proxy and a transparent TCP proxy.

Build

1. install libev (optional)

   # Archlinux
   sudo pacman -S libev
   # CentOS
   sudo yum install libev-devel
   # Debian/Ubuntu
   sudo apt-get install libev-dev

2. configure and make

   autoreconf -if
   ./configure --prefix=/usr --sysconfdir=/etc
   make

3. install

   sudo make install

Cross compile

1. setup cross compile tool chain

2. build

   autoreconf -if
   ./configure --host=arm-unknown-linux-gnueabihf \
       --prefix=/usr --sysconfdir=/etc

Usage

See man:iosocks(8).

Advanced usage

ioredir prorides a transpant TCP proxy. This feature requires Linux netfilter's NAT function.

iptables -t nat -N iosocks
iptables -t nat -A iosocks -d ${server} -j RETURN
iptables -t nat -A iosocks -d 0.0.0.0/8 -j RETURN
iptables -t nat -A iosocks -d 10.0.0.0/8 -j RETURN
iptables -t nat -A iosocks -d 127.0.0.0/8 -j RETURN
iptables -t nat -A iosocks -d 169.254.0.0/16 -j RETURN
iptables -t nat -A iosocks -d 172.16.0.0/12 -j RETURN
iptables -t nat -A iosocks -d 192.168.0.0/16 -j RETURN
iptables -t nat -A iosocks -d 224.0.0.0/4 -j RETURN
iptables -t nat -A iosocks -d 240.0.0.0/4 -j RETURN
iptables -t nat -A iosocks -p tcp -j REDIRECT --to-ports 1081
iptables -t nat -A OUTPUT -p tcp -j iosocks
iptables -t nat -A PREROUTING -p tcp -j iosocks

License

Copyright (C) 2014 - 2015, Xiaoxiao [email protected]

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.