CentOS7配置Squid正向代理

一、服务器环境

[root@loclalhost ~]# cat  /etc/redhat-release
CentOS Linux release 7.9.2009 (Core)

二、Squid部署

1. 安装Squid

[root@loclalhost ~]#  yum install squid

2. 修改squid配置文件，修改后配置文件如下

[root@loclalhost ~]#  cat  /etc/squid/squid.conf

#
# 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 server1 src 122.51.205.169
#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 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 "localhost" 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 allow server1
http_access allow  all

# Squid normally listens to port 3128
http_port 63128

# Uncomment and adjust the following to add a disk cache directory.
#cache_dir ufs /var/spool/squid 100 16 256

# Leave coredumps in the first cache dir
coredump_dir /var/spool/squid

#
# Add any of your own refresh_pattern entries above these.
#
refresh_pattern ^ftp:           1440    20%     10080
refresh_pattern -i (/cgi-bin/|\?) 0     0%      0
refresh_pattern .               0       20%     4320

3. 语法检测

[root@loclalhost ~]# squid   -k  parse

[root@iZeb357styf38u34pam9coZ ~]# squid   -k  parse
2024/08/15 16:36:38| Startup: Initializing Authentication Schemes ...
2024/08/15 16:36:38| Startup: Initialized Authentication Scheme 'basic'
2024/08/15 16:36:38| Startup: Initialized Authentication Scheme 'digest'
2024/08/15 16:36:38| Startup: Initialized Authentication Scheme 'negotiate'
2024/08/15 16:36:38| Startup: Initialized Authentication Scheme 'ntlm'
2024/08/15 16:36:38| Startup: Initialized Authentication.
2024/08/15 16:36:38| Processing Configuration File: /etc/squid/squid.conf (depth 0)
2024/08/15 16:36:38| Processing: acl SSL_ports port 443
2024/08/15 16:36:38| Processing: acl Safe_ports port 80         # http
2024/08/15 16:36:38| Processing: acl Safe_ports port 21         # ftp
2024/08/15 16:36:38| Processing: acl Safe_ports port 443                # https
2024/08/15 16:36:38| Processing: acl Safe_ports port 210                # wais
2024/08/15 16:36:38| Processing: acl Safe_ports port 1025-65535 # unregistered ports
2024/08/15 16:36:38| Processing: acl Safe_ports port 280                # http-mgmt
2024/08/15 16:36:38| Processing: acl Safe_ports port 488                # gss-http
2024/08/15 16:36:38| Processing: acl Safe_ports port 591                # filemaker
2024/08/15 16:36:38| Processing: acl Safe_ports port 777                # multiling http
2024/08/15 16:36:38| Processing: acl CONNECT method CONNECT
2024/08/15 16:36:38| Processing: http_access allow  all
2024/08/15 16:36:38| Processing: http_port 63128
2024/08/15 16:36:38| Processing: coredump_dir /var/spool/squid
2024/08/15 16:36:38| Processing: refresh_pattern ^ftp:          1440    20%     10080
2024/08/15 16:36:38| Processing: refresh_pattern -i (/cgi-bin/|\?) 0    0%      0
2024/08/15 16:36:38| Processing: refresh_pattern .              0       20%     4320
2024/08/15 16:36:38| Initializing https proxy context

4. 启动squid，设置开机自启

 [root@loclalhost ~]#  systemctl  enable   squid   --now

5. Linux客户端测试代理下载

 [root@loclalhost ~]#  wget   -e "http_proxy=http://上述loalhost的公网IP:63128"    https://github.com/prometheus/node_exporter/releases/download/v1.1.2/node_exporter-1.1.2.linux-amd64.tar.gz