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squid安装与配置

Jun 07, 2016 pm 03:10 PM
Install Configuration

Squid 安装 与 配置 [root@localhost ~]# yum -y install squid [root@localhost ~]# rpm -ql squid (释放文件) /etc/squid/squid.conf /etc/squid/msntauth.conf.default ( 配置 文件模板) /var/log/squid (日志目录) /var/spool/squid (缓存目录)

Squid安装配置

[root@localhost ~]# yum -y install squid

[root@localhost ~]# rpm -ql squid(释放文件)

/etc/squid/squid.conf

/etc/squid/msntauth.conf.default配置文件模板)

/var/log/squid(日志目录)

/var/spool/squid(缓存目录)

 

[root@localhost ~]# vim /etc/squid/squid.conf(常用基本配置

http_port 3128

cache_mem 64 MB 内存占用量

maximum_object_size 4096 KB(最大缓存)

access_log /var/log/squid/access.log squid

visible_hostname proxy.openlab.com(代理服务器主机名)

dns_testnames www.google.com www.163.com(测试DNS

cache_dir ufs /var/spool/squid 100 16 256100M,)

 

1.squid 服务器实现基本代理

squid服务器

eth0  200.200.200.10

eth1  192.168.10.8

WEB服务器

eth0 200.200.200.100

[root@www ~]# iptables -P INPUT DROP            -P默认规则)

[root@localhost ~]# iptables -I INPUT -p tcp --dport 22 -j ACCEPT

[root@localhost ~]# iptables -I INPUT -p tcp --dport 80 -j ACCEPT

squid服务器

[root@localhost ~]# service squid restart(启动服务,无需配置

Stopping squid: ..............                             [  OK  ]

Starting squid: .                                          [  OK  ]

[root@localhost ~]# vim /etc/squid/squid.conf

cache_dir ufs /var/spool/squid 100 16 256(去掉前面#

reply_body_max_size 10 MB(不允许下载大于10M附件,此行需添加)

acl RealFile urlpath_regex -i \.mp3$(添加一条acl

http_access deny all

 

 

2.透明代理

Squid服务器

Eth0  200.200.200.10 eth1  192.168.10.8

[root@localhost ~]# vim /etc/squid/squid.conf

http_port 192.168.10.8:3128 transparent

[root@localhost ~]#iptables -t nat -I PREROUTING -i eth1 -s 192.168.10.0/24 -p tcp --dport 80 -j REDIRECT --to-ports 3128

[root@localhost ~]# service iptables save

开启路由转发

[root@localhost ~]# vim /etc/sysctl.conf

net.ipv4.ip_forward = 0

[root@localhost ~]# sysctl -p

配置nat

[root@localhost ~]# iptables -t nat -I POSTROUTING -s 192.168.10.0/24 -o eth1 -j SNAT --to-source 200.200.200.10

WEB服务器

Eth0  200.200.200.100

[root@localhost ~]# iptables  -L --line-numbers

Chain INPUT (policy DROP)

num  target     prot opt source               destination        

1    ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:http

2    ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:ssh

测试

 

 

3.Squid反向代理

[root@localhost ~]# vim /etc/squid/squid.conf

http_port  218.29.30.31:80 vhost vhost虚拟主机,80因为http默认是80,所以代理端口写成80

cache_peer 192.168.2.11 parent 80 0 originserver weight=5 max-conn=30originserver代表真实serverweight权重,越大越优先)

cache_peer 192.168.2.12 parent 80 0 originserver weight=5 max-conn=30

cache_peer 192.168.2.13 parent 80 0 originserver weight=5 max-conn=30

cache_peer 192.168.2.14 parent 80 0 originserver weight=1 max-conn=8

http_access allow all(允许外部所有访问)

[root@localhost ~]# service squid restart

 

无心

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