国外vps+squid+stunnel实现加密自由翻墙

squid安装配置
首先安装squid
yum install squid
安装完成，接下来就是修改配置文件以符合我们的要求：
vim /etc/squid/squid.conf
将http_access deny all
改为http_access allow all

http_access allow localnet
http_access allow localhost

修改默认的监听端口：
因为我要访问google，facebook等网站，主要作用是访问web页面，所以我要将监听端口设为80以起到代理缓存加速功能：
http_port 80
在squid.conf 添加主机地址：

acl manager proto cache_object
acl localhost src 127.0.0.1/32 ::1
acl to_localhost dst 127.0.0.0/8 0.0.0.0/32 ::1

添加代理端口：

acl SSL_ports port 995
acl SSL_ports port 993
acl SSL_ports port 465
acl SSL_ports port 443

如果想要代理所有端口的话可以添加
acl SSL_ports port 1-65535
全部代理
这是测试的配置文件：

#
# Recommended minimum configuration:
#
acl manager proto cache_object
acl localhost src 127.0.0.1/32 ::1
acl to_localhost dst 127.0.0.0/8 0.0.0.0/32 ::1

# Example rule allowing access from your local networks.
# Adapt to list your (internal) IP networks from where browsing
# should be allowed
acl localnet src 10.0.0.0/8     # RFC1918 possible internal network
acl localnet src 172.16.0.0/12  # RFC1918 possible internal network
acl localnet src 192.168.0.0/16 # RFC1918 possible internal network
acl localnet src fc00::/7       # RFC 4193 local private network range
acl localnet src fe80::/10      # RFC 4291 link-local (directly plugged) machines

acl SSL_ports port 995
acl SSL_ports port 993
acl SSL_ports port 465
acl SSL_ports port 443
acl Safe_ports port 80          # http
acl Safe_ports port 21          # ftp
acl Safe_ports port 443         # https
acl Safe_ports port 70          # gopher
acl Safe_ports port 210         # wais
acl Safe_ports port 1025-65535  # unregistered ports
acl Safe_ports port 280         # http-mgmt
acl Safe_ports port 488         # gss-http
acl Safe_ports port 591         # filemaker
acl Safe_ports port 777         # multiling http
acl CONNECT method CONNECT

#
# Recommended minimum Access Permission configuration:
#
# Only allow cachemgr access from localhost
http_access allow manager localhost
http_access deny manager

# Deny requests to certain unsafe ports
http_access deny !Safe_ports

# Deny CONNECT to other than secure SSL ports
http_access deny CONNECT !SSL_ports

# We strongly recommend the following be uncommented to protect innocent
# web applications running on the proxy server who think the only
# one who can access services on "localhost" is a local user
#http_access deny to_localhost
#
# INSERT YOUR OWN RULE(S) HERE TO ALLOW ACCESS FROM YOUR CLIENTS
#

# Example rule allowing access from your local networks.
# Adapt localnet in the ACL section to list your (internal) IP networks
# from where browsing should be allowed
http_access allow localnet
http_access allow localhost

# And finally deny all other access to this proxy
http_access allow all

# Squid normally listens to port 3128
#http_port 3128
http_port 80
# We recommend you to use at least the following line.
hierarchy_stoplist cgi-bin ?

# Uncomment and adjust the following to add a disk cache directory.
#cache_dir ufs /var/spool/squid 100 16 256

# Leave coredumps in the first cache dir
coredump_dir /var/spool/squid

# Add any of your own refresh_pattern entries above these.
refresh_pattern ^ftp:           1440    20%     10080
refresh_pattern ^gopher:        1440    0%      1440
refresh_pattern -i (/cgi-bin/|\?) 0     0%      0
refresh_pattern .               0       20%     4320

下面是squid常用命令作用：
使用squid命令启动
squid -s后台启动
squid -z初始化
squid -k reconfigure 重新加载配置文件
squid -k shutdown 停止squid
然后netstat -anp看一下端口

tcp        0      0 :::80                       :::*                        LISTEN      3625/(squid)

squid安装配置完毕。
安装stunnel server 为了方便直接用yum 安装，当然也可以使用源代码安装，具体安装就不多说了

yum install stunnel
yum install stunnel
安装完成后生成一个证书，要填一下，就是城市，公司等等，可以随便填需要openssl提前请安装好
 修改配置文档：
/usr/share/doc/stunnel-4.29/stunnel.conf
这是测试的stunnel.conf 文件，可以直接复制

#sion=zlib
fips=no
syslog=yes
debug=7
output=/var/log/stunnel.log
setuid=root
setgid=root
pid=/var/run/stunnel.pid
cert=/opt/stunnel/stunnel.pem
key=/opt/stunnel/stunnel.pem
client=no
[squid]
accept=443
connect=127.0.0.1:80

accept是stunnel的监听端口
connect是我转发的端口，也就是squid的端口
我将证书放在了/opt/stunnel下面了，pid 和cert指向证书
保存，退出
启动stunnel

/usr/bin/stunnel /usr/share/doc/stunnel-4.29/stunnel.conf

如果是二进制安装的话
/usr/local/bin/stunnel   
看一下端口
tcp        0      0 0.0.0.0:443                 0.0.0.0:*                   LISTEN      11589/stunnel
stunnel安装完成
stunnel客户端安装配置
下载stunnel windows客户端，网上一大片，
在stunnel安装路径下
修改stunnel.conf

;Enable support for the insecure SSLv3 protocol 默认使用SSL23
options = -NO_SSLv3
client = yes
[squid]
accept = 8088
connect = stunnel server ip:443

打开桌面stunnel启动ok了
在IE浏览器里面设置代理，127.0.0.1 端口是：8088
ok可以打开google facebook等网站了。