## Centos 7
sudo yum -y install squid
sudo systemctl start squid
sudo systemctl enable squid
sudo systemctl status squid
sudo nano /etc/squid/squid.conf
## Unbuntu
sudo apt update
sudo apt -y install squid
sudo systemctl start squid
sudo systemctl enable squid
sudo systemctl status squid
sudo nano /etc/squid/squid.conf
## Config
http_access allow all
# http_access deny all
## Final
sudo systemctl restart squid
Port 3128