CentOS Stream 9
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Squid : Install2022/03/22

 
Install Squid to configure Proxy server.
[1] Install Squid.
[root@prox ~]#
dnf -y install squid
[2] This is general forward proxy settings.
[root@prox ~]#
vi /etc/squid/squid.conf
.....
.....
acl localnet src fc00::/7               # RFC 4193 local private network range
acl localnet src fe80::/10              # RFC 4291 link-local (directly plugged)) machines
# line 16 : add your local network
# network range you allow to use this proxy server
acl my_localnet src 10.0.0.0/24

# line 45 : uncomment
http_access deny to_localhost

# line 54, 55 : comment out and add your ACL set above
#http_access allow localnet
#http_access allow localhost
http_access allow my_localnet

# add to the end
request_header_access Referer deny all
request_header_access X-Forwarded-For deny all
request_header_access Via deny all
request_header_access Cache-Control deny all

# add (do not display IP address)

forwarded_for off
[root@prox ~]#
systemctl enable --now squid

[3] If Firewalld is running, allow Proxy service.
[root@prox ~]#
firewall-cmd --add-service=squid

success
[root@prox ~]#
firewall-cmd --runtime-to-permanent

success
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