Step1: Update the server sudo yum update -y.
Step 2: Configure #EPEL repo.
Step 3: Install squid sudo yum -y install squid.
Step 4: Start and enable #squid server.
Step 5: Check the status of squid server.
Step 1: Install httpd-tools sudo yum -y install httpd-tools.
https://outsourcepath.com/resource/5-install-configure-squid-proxy