sudo yum install squid
安装完成后，您可以编辑Squid的配置文件
/etc/squid/squid.conf来调整代理服务器的行为。

启动Squid服务，并设置为开机启动：

sudo systemctl start squid
sudo systemctl enable squid
检查Squid服务的状态，确保其正在运行：

sudo systemctl status squid

配置文件 主要 http_access allow all

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 0.0.0.1-0.255.255.255 # RFC 1122 "this" network (LAN)
acl localnet src 10.0.0.0/8 # RFC 1918 local private network (LAN)
acl localnet src 100.64.0.0/10 # RFC 6598 shared address space (CGN)
acl localnet src 169.254.0.0/16 # RFC 3927 link-local (directly plugged) machines
acl localnet src 172.16.0.0/12 # RFC 1918 local private network (LAN)
acl localnet src 192.168.0.0/16 # RFC 1918 local private network (LAN)
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

http_access allow all

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 deny all

Squid normally listens to port 3128

http_port 3128

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