redsocks2 自动代理设置

redsock2 可以把一些不支持透明代理的代理服务器重定向一下，这样可以实现透明代理了

redsock2安装很简单直接make就可以了，
ubuntu需要

apt-get intsll libevent-2.0-5 libssl-dev

安装完成后，直接把 redsocks2 复制到相关目录即可。

我这用它做网关， 然后测试了一下，http 和 https 不能一起走，要分开
redsocks2 配置文件：

base {
log_debug = off;
log_info = off;
daemon = on;
redirector= iptables;
}

redsocks {
local_ip = 192.168.1.1;
local_port = 1080;
ip = 192.168.1.1;
port = 8787;
type = http-relay;
timeout = 12;
autoproxy = 1;
}

redsocks {
local_ip = 192.168.1.1;
local_port = 1081;
ip = 192.168.1.1;
port = 8787;
type = http-connect;
timeout = 12;
autoproxy = 1;
}

redsocks {
local_ip = 192.168.1.1;
local_port = 1090;
interface = eth0;
type = direct;    #主要用来解决NAT问题，让WAN可以访问到LAN
timeout = 1;
autoproxy = 0;
}

autoproxy {
no_quick_check_seconds = 300;
quick_connect_timeout = 2;
}

ipcache {
cache_size = 4;
cache_file = "/home/user/conf/cache.ip";
stale_time = 7200;
autosave_interval = 3600;
port_check = 1;
}

相关iptables 设置

#!/bin/bash

iptables-restore</etc/network/iptables.up.rules

iptables -t nat -N RSHTTPS
iptables -t nat -A RSHTTPS -o lo -j RETURN
iptables -t nat -A RSHTTPS -d 0.0.0.0/8 -j RETURN
iptables -t nat -A RSHTTPS -d 10.0.0.0/8 -j RETURN
iptables -t nat -A RSHTTPS -d 127.0.0.0/8 -j RETURN
iptables -t nat -A RSHTTPS -d 169.254.0.0/16 -j RETURN
iptables -t nat -A RSHTTPS -d 172.16.0.0/12 -j RETURN
iptables -t nat -A RSHTTPS -d 172.17.0.0/12 -j RETURN
iptables -t nat -A RSHTTPS -d 192.168.0.0/16 -j RETURN
iptables -t nat -A RSHTTPS -d 224.0.0.0/4 -j RETURN
iptables -t nat -A RSHTTPS -d 240.0.0.0/4 -j RETURN
iptables -t nat -A RSHTTPS -p tcp -j REDIRECT --to-port 1081
iptables -t nat -I PREROUTING -p tcp --dport 443 -j RSHTTPS

iptables -t nat -N RSHTTP
iptables -t nat -A RSHTTP -o lo -j RETURN
iptables -t nat -A RSHTTP -d 0.0.0.0/8 -j RETURN
iptables -t nat -A RSHTTP -d 10.0.0.0/8 -j RETURN
iptables -t nat -A RSHTTP -d 127.0.0.0/8 -j RETURN
iptables -t nat -A RSHTTP -d 169.254.0.0/16 -j RETURN
iptables -t nat -A RSHTTP -d 172.16.0.0/12 -j RETURN
iptables -t nat -A RSHTTP -d 172.17.0.0/12 -j RETURN
iptables -t nat -A RSHTTP -d 192.168.0.0/16 -j RETURN
iptables -t nat -A RSHTTP -d 224.0.0.0/4 -j RETURN
iptables -t nat -A RSHTTP -d 240.0.0.0/4 -j RETURN
iptables -t nat -A RSHTTP -p tcp -j REDIRECT --to-port 1080
iptables -t nat -I PREROUTING -p tcp --dport 80 -j RSHTTP

iptables -t nat -N RSDIRECT
iptables -t nat -A RSDIRECT -p tcp -j REDIRECT --to-port 1090
iptables -t nat -I PREROUTING -p tcp -d 208.67.220.220 -j RSDIRECT
#不加下面这条，没办法WAN网连接进来
iptables -t nat -I PREROUTING -p tcp -s 192.168.1.2 --sport 3389 -j RSDIRECT

pkill redsocks2
redsocks2 -c /home/tool/conf/red.conf

还有另一个叫 cow 的软件也可以实现类似效果。功能上更加强点。
链接地址