#squid传统代理服务器
systemctl stop firewalld
systemctl disable firewalld
setenforce 0
yum -y install gcc gcc-c++ make
tar zxvf squid-3.5.28.tar.gz -C /opt/
cd /opt
tar zxvf squid-3.5.28.tar.gz -C /opt/
cd /opt/squid-3.5.28
./configure --prefix=/usr/local/squid \
--sysconfdir=/etc \
--enable-arp-acl \
--enable-linux-netfilter \
--enable-linux-tproxy \
--enable-async-io=100 \
--enable-err-language="Simplify_Chinese" \
--enable-underscore \
--disable-poll \
--enable-epoll \
--enable-gnuregex
make -j 4 && make install
ln -s /usr/local/squid/sbin/* /usr/local/sbin/
useradd -M -s /sbin/nologin squid
chown -R squid:squid /usr/local/squid/var/
vim /etc/squid.conf
    56行：http_access allow all
    57行：http_access deny all
    60行：http_port 3128
    63行：cache_effective_user squid
    62行：cache_effective_group squid
  64行：cache_mem 64 MB
  65行：reply_body_max_size 10 MB
  66行：maximum_object_size 4096 KB
  72行：coredump_dir /usr/local/squid/var/cache/squid
squid -z && squid
netstat -anpt | grep squid
vim /etc/init.d/squid
#!/bin/bash
#chkconfig: 2345 90 25
PID="/usr/local/squid/var/run/squid.pid"
CONF="/etc/squid.conf"
CMD="/usr/local/squid/sbin/squid"
case "$1" in
   start)
     netstat -natp | grep squid &> /dev/null
     if [ $? -eq 0 ]
     then
       echo "squid is running"
     else
       echo "正在启动 squid..."
       $CMD
     fi
   ;;
   stop)
     $CMD -k kill &> /dev/null
     rm -rf $PID &> /dev/null
   ;;
   status)
     [ -f $PID ] &> /dev/null
        if [ $? -eq 0 ]
          then
            netstat -natp | grep squid
          else
            echo "squid is not running"
        fi
   ;;
   restart)
      $0 stop &> /dev/null
      echo "正在关闭 squid..."
      $0 start &> /dev/null
      echo "正在启动 squid..."
   ;;
   reload)
      $CMD -k reconfigure
   ;;
   check)
      $CMD -k parse
   ;;
   *)
      echo "用法：$0{start|stop|status|reload|check|restart}"
   ;;
esac
#脚本内容到此结束
chmod +x /etc/init.d/squid
chkconfig --add squid
chkconfig --level 35 squid on
service squid restart
iptables -F
iptables -I INPUT -p tcp --dport 3128 -j ACCEPT
#传统代理配置完毕