Posts tagged ‘auth’

FreeBSD6.2+Squid2.6架设“对外网用户的squid代理+认证”服务器

架设一台代理,提供对外网用户的代理请求,端口仍然为3128,加入Squid认证功能。这样可以保证只提供给某些你信任的用户该服务。架设过程和架设对内网用户提供服务的过程基本相同,只是在编译安装squid时和squid的配置文件squid.conf有些不同。这次架设的服务器将保留对内网用户提供squid服务(内网用户不增加认证功能限制)的同时再增加对外网用户提供squid+认证功能。版本为FreeBSD6.2-RELEASE+Squid2.6-STABLE12

服务器及网络信息:

外网网卡:em0;外网ip:221.6.117.50/255.255.255.240
内网网卡:em1;内网ip:128.0.0.4/255.255.252.0

架设过程:

一、FreeBSD的安装

1、最小化安装FreeBSD6.2RELEASE

2、配置内核:

jiulongproxynew# cd /usr/src/sys/i386/conf
jiulongproxynew# cp GENERIC funpower
jiulongproxynew# ee funpower

修改内核配置文件,将不需要的选项(如网卡)之类的前面打#,然后按esc并按a保存退出,再执行:

jiulongproxynew# /usr/sbin/config funpower
jiulongproxynew# cd ../compile/funpower
jiulongproxynew# make cleandepend
jiulongproxynew# make depend
jiulongproxynew# make
jiulongproxynew# make install

3、配置/etc/rc.conf:

hostname="jiulongproxynew.jscpu.com"
defaultrouter="221.6.117.97"
ifconfig_em0="inet 221.6.117.50 netmask 255.255.255.240"
ifconfig_em1="inet 128.0.0.4 netmask 255.255.252.0"
sendmail_enable="NONE"
inetd_enable="YES"
linux_enable="YES"
sshd_enable="YES"
usbd_enable="YES"

4、配置resolv.conf:

jiulongproxynew# cd /etc
jiulongproxynew# ee resolv.conf

添加如下两行:

nameserver 221.6.96.177
nameserver 221.6.96.178

5、重启服务器

二、squid的安装

1、安装perl以支持squid

jiulongproxynew# cd /usr/ports/lang/perl5
jiulongproxynew# make install

2、安装Apache,squid认证用户设置密码时使用apache的密码管理程序htpasswd

jiulongproxynew# cd /usr/ports/www/apache13
jiulongproxynew# make install

3、下载并安装squid

http://www.squid-cache.org/Versions/v2/2.6/下载squid-2.6.STABLE16.tar.gz并通过FTP放置服务器目录中/home/funpower,然后开始解压安装:

jiulongproxynew# cd /home/funpower
jiulongproxynew# tar zxvf squid-2.6.STABLE16.tar.gz
jiulongproxynew# cd squid-2.6.STABLE16
jiulongproxynew# ./configure –prefix=/usr/local/squid –enable-auth=”basic” –enable-basic-auth-helpers=”NCSA”
jiulongproxynew# make
jiulongproxynew# make install

3、配置squid和创建认证用户及密码

将ncsa_auth拷贝至可执行目录/usr/sbin

jiulongproxynew# cd /home/funpower/squid-2.6.STABLE16
jiulongproxynew# cd helpers/basic_auth/NCSA/
jiulongproxynew# cp ncsa_auth /usr/sbin

创建squid认证用户www

jiulongproxynew# /usr/local/bin/htpasswd -c /usr/local/squid/etc/password www
New password:
Re-type new password:
Adding password for user www

输入www两遍密码后出现上面的信息就说明用户创建成功。

4、配置squid.conf

jiulongproxynew# cd /usr/local/squid/etc
jiulongproxynew# ee squid.conf

内容如下:

auth_param basic program /usr/sbin/ncsa_auth /usr/local/squid/etc/password
auth_param basic children 5
auth_param basic realm Please enter the user name and password
auth_param basic credentialsttl 2 hours

acl web src 128.0.0.0/22 //内网ip段定义
acl all src 0.0.0.0/0.0.0.0 //外网ip段定义
acl all1 proxy_auth REQUIRED //定义all1字段为需要认证

acl manager proto cache_object
acl localhost src 127.0.0.1/255.255.255.255
acl to_localhost dst 127.0.0.0/8
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

#deny bbs
acl bbs url_regex -i bbs
http_access deny bbs

#deny baidu post
acl baidupost dstdom_regex post.baidu.com
acl baidupost2 dstdomain post.baidu.com
http_access deny baidupost
http_access deny baidupost2

http_access allow manager localhost
http_access deny manager
http_access deny !Safe_ports
http_access deny CONNECT !SSL_ports
http_access allow web //定义内网ip段为允许通过
http_access allow all all1 //定义外网ip段为允许通过,但需要认证,因为加了all1字段
icp_access allow all
http_port 3128
http_port 221.6.117.x:3128 //增加一个对本机外网地址的3128端口
hierarchy_stoplist cgi-bin ?
acl QUERY urlpath_regex cgi-bin ?
cache deny QUERY
cache_mem 64 MB
cache_dir ufs /usr/local/squid/cache 7000 16 256
access_log /dev/null
cache_log /dev/null
cache_store_log none
refresh_pattern ^ftp: 1440 20% 10080
refresh_pattern ^gopher: 1440 0% 1440
refresh_pattern . 0 20% 4320
acl apache rep_header Server ^Apache
broken_vary_encoding allow apache
cache_mgr webmaster@jscpu.com
cache_effective_user squid
cache_effective_group squid
visible_hostname jiulongproxynew.jscpu.com

4、创建用户及缓存等:

jiulongproxynew# pw groupadd squid
jiulongproxynew# pw adduser squid -g squid -s /nonexistent
jiulongproxynew# mkdir /usr/local/squid/cache
jiulongproxynew# chown -R squid /usr/local/squid/cache
jiulongproxynew# chgrp -R squid /usr/local/squid/cache
jiulongproxynew# chown -R squid /usr/local/squid/var/logs
jiulongproxynew# chgrp -R squid /usr/local/squid/var/logs
jiulongproxynew# /usr/local/squid/sbin/squid -z
jiulongproxynew# cd /usr/local/squid/sbin
jiulongproxynew# ./squid
jiulongproxynew# ee /etc/rc.local

加入如下一行:
/usr/local/squid/sbin/squid
保存退出。

5、重启服务器

三、客户端的设置及上网演示

1、内网用户

内网用户因为没有增加squid代理的认证功能,所以上网设置不变,只需在IE浏览器中设置服务器内网网卡地址128.0.0.4及3128端口即可。如下图:

freebsdsquidauth1.gif

2、外网(家庭)用户

外网用户,一般是家中,在使用该代理,需将IE上的代理服务器地址设置为该服务器的外网网卡地址221.6.117.50,端口仍为3128。如下图:

freebsdsquidauth22.gif

设置完后,在IE上打开任一网址,即会跳出一认证对话框,如下图,输入刚才创建的www用户及密码,若能访问该网站,及该服务器架设正确。

freebsdsquidauth3.gif