squid之安装配置运行

cto67

1. 下载源码包 squid-3.4.13.tar.gz

root@master:/home/lihan/work/cluster# ls

nginx-1.8.0  nginx-1.8.0.tar.gz  squid-3.4.13.tar.gz





2. 解压源码包

root@master:/home/lihan/work/cluster# tar zxvf squid-3.4.13.tar.gz

root@master:/home/lihan/work/cluster# ls

nginx-1.8.0  nginx-1.8.0.tar.gz  squid-3.4.13  squid-3.4.13.tar.gz





3. 编译安装squid

root@master:/home/lihan/work/cluster# cd squid-3.4.13

root@master:/home/lihan/work/cluster/squid-3.4.13# ./configure

root@master:/home/lihan/work/cluster/squid-3.4.13# make

root@master:/home/lihan/work/cluster/squid-3.4.13# make install





4. 进去squid默认安装目录查看

root@master:/usr/local/squid# ls

bin  etc  libexec  sbin  share  var

其中，squid可执行文件位于./sbin, 配置文件squid.conf位于./etc/





5. 修改三个文件夹的权限

# chmod 777 /usr/local/squid/var/logs/

# chmod 777 /usr/local/squid/var/cache/squid

# chmod 777 /var/log/squid





　　6. 修改配置文件/usr/local/squid/etc/squid.conf
　　

<span style=&quot;font-family:Microsoft YaHei;&quot;><span style=&quot;font-family:Microsoft YaHei;&quot;>#
# Recommended minimum configuration:
#
# 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 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:
#
# 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
# Only allow cachemgr access from localhost
http_access allow localhost manager
http_access deny manager
# 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 &quot;localhost&quot; 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 deny all
# Squid normally listens to port 3128
#http_port 3128
#http_port 192.168.100.30:80 vhost
http_port 80 vhost
cache_peer 192.168.100.31 parent 80 0 originserver weight=5 max-conn=30
cache_peer 192.168.100.210 parent 80 0 originserver weight=5 max-conn=30
cache_mem 64 MB        
maximum_object_size 4096 KB           
access_log /var/log/squid/access.log
# Uncomment and adjust the following to add a disk cache directory.
cache_dir ufs /usr/local/squid/var/cache/squid 100 16 256
# Leave coredumps in the first cache dir
coredump_dir /usr/local/squid/var/cache/squid
#
# Add any of your own refresh_pattern entries above these.
#
refresh_pattern ^ftp:144020%10080
refresh_pattern ^gopher:14400%1440
refresh_pattern -i (/cgi-bin/|\?) 00%0
refresh_pattern .020%4320</span></span>
　　
　　



7. 在前台运行

root@master:/usr/local/squid/sbin# ./squid -N -d1 #d1(1234的1非dl)

　　8. 测试
　　8.1 拓扑
　　如下图所示，squid运行于s0服务器上面，其ip地址为192.168.100.30 ，http端口号为80. 其配置与/usr/local/squid/etc/squid.conf保持一致. squid对s1, s2进行代理：

图1 拓扑

　　8.2 抓包
　　启动服务器s0上的wireshark抓；启动浏览器，浏览器所在的客户端ip地址为192.168.100.31，在浏览器地址栏中输入http://192.168.100.30，不断的刷新浏览器，报文如下：

图2 抓包

可见，s0所在squid对192.168.100.31/210的服务器的静态页面进行了cache. (192.168.100.31对192.168.100.30进行了http请求，而192.168.100.30并未请求192.168.100.31/210, 而是直接回应了http响应).

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