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3-squid服務

linux學習筆記

######squid正向代理######

##借助代理訪問客戶端訪問不到的地址

1.安裝服務

yum install squid -y

systemctl start squid

2.##第三方主機訪問網絡

vim /etc/squid/squid.conf

52 http_access allow localnet

53 http_access allow localhost

54

55 # And finally deny all other access to this proxy

56 http_access allow all ##允許所有http服務訪問

57

58 # Squid normally listens to port 3128

59 http_port 3128##訪問端口3128

60

61 # Uncomment and adjust the following to add a disk cache directory.

62 cache_dir ufs /var/spool/squid 100 16 256 ##查詢的目錄和文件數目

63

systemctl restart squid ##重啟服務

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測試:

瀏覽器設置Advance >Network >Setings

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訪問:www.taobao.com

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3.##訪問不了www.baiducom,其余都可以

vim /etc/squid/squid.conf

52 acl badurl dst www.baidu.com

53 http_access deny badurl ##www.baidu.com加入黑名單

54 http_access allow localnet

55 http_access allow localhost

56

57 # And finally deny all other access to this proxy

58 http_access deny all

59

60 # Squid normally listens to port 3128

61 http_port 3128

62

63 # Uncomment and adjust the following to add a disk cache directory.

64 cache_dir ufs /var/spool/squid 100 16 256

65

systemctl restart squid

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4.##訪問不了baidu的網絡

vim /etc/squid/squid.conf

52 acl badurl dstdomain .baidu.com

53 http_access deny badurl ##.baidu.com加入黑名單

54 http_access allow localnet

55 http_access allow localhost

56

57 # And finally deny all other access to this proxy

58 http_access deny all

59

60 # Squid normally listens to port 3128

61 http_port 3128

62

63 # Uncomment and adjust the following to add a disk cache directory.

64 cache_dir ufs /var/spool/squid 100 16 256

65

systemctl restart squid

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########squid反向代理#######

vim /etc/squid/squid.conf

59 http_port 80 vhost vport##反向代理端口為80

60 cache_peer 172.25.254.134 parent 80 0 no-query ##設置訪問域名的ip為172.25.254.134 端口80 no-query不查詢

61

systemctl restart squid

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#####平分訪問主機的壓力#######

vim /etc/squid/squid.conf

59 http_port 80 vhost vport

60 cache_peer 172.25.254.134 parent 80 0 no-query originserver name=web1 round-robin weight=3

##設置訪問域名的ip為172.25.254.134 端口80 no-query不查詢,直接獲取數據,名字web1,round-robin輪流查詢,web1三次

61 cache_peer 172.25.254.111 parent 80 0 no-query originserver name=web2 round-robin weight=1

##設置訪問域名的ip為172.25.254.111 端口80 no-query不查 詢,直接獲取數據,名字web2,round-robin輪流查詢,web2一次

62 cache_peer_domain www.westos.com web1 web2 ##指定域名www.westos.com訪問的ip是web1和web2

systemctl restart squid

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瀏覽器訪問

vim /etc/hosts

172.25.254.111 www.westos.com

172.25.254.134 www.westos.com

訪問:www.westos.com

訪問172.25.254.134 三次

訪問172.25.254.134 一次

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3-squid服務