How to configure proxy server in Centos 7?

How can I configure Proxy server in Centos 7?

I would like to understand how I should configure proxy server in Centos 7. I need some reference materials to understand. I have used Fedora 18(and earlier version) and Ubuntu. I do not understand what is the difference between them. I just install the command line installation in the local computer but I want to use the internet connection through Proxy server in my local computer.

What are the pre-requisits for doing it? How I can configure the proxy settings for squid and squid3 for Centos 7? Is any graphical configuration manager for this job? Please help me out. Thanks in advance. In case you are interested in working with Squid proxy server, here is a list of steps to be considered: To set up proxy on a LAN, first check if the service is already enabled or not. If you are using a firewall, either enable or disable the service.

Check for an existing configuration file for configuring Squid proxy server (ie /etc/squid.conf) using the command # squid -bkc. If an existing configuration file exists, then you can directly update your settings without modifying this file. If no configuration file exists, then you can create a new configuration file as a starting point.
# squid -bkc > /etc/squid.conf If you have not configured a file, then you need to create one using the above command. The command creates a text configuration file in the current directory containing the necessary settings.

To get a basic idea about your network setup, start the service using the below command. # systemctl start squid. Next, open the web browser and try to reach the websites that are not visible from the local network. It will be helpful to check your IP address so that you can identify your local network.
# netstat -napt. Also check the IP address of the default gateway using the below command. # ip route. Once you know your default gateway and your IP address, follow the instructions given below to set up proxy. Enable proxy on the router using port forwarding or port triggering. The next step is to enable squid to use your router's IP address as a relay.

How to check proxy settings in Centos?

Step by Step Guide. We'll use yum to update your configuration by installing some new packages, update your repositories, add an SSL certificate and configure the proxy settings for squid.info #3 Install the required packages. Yum -y install libxml2-devel expat-devel openldap-devel libxslt-devel pkgconfig file libevent-devel curl wget unzip yum -y update && yum -y clean all #4 Set the proxy settings. I will assume that your username and password are your normal user credentials (and not root). To modify the proxy settings, I'm going to edit /etc/sysconfig/squid. #1 Find the httpproxy environment variable. HTH>env. #2 Set up the httpproxy variable (default values). Httpproxy=your proxy address. Httpproxyusername=your username. Httpproxypassword=your password. HTTPPROXYUSERNAME=Your Proxy Username. HTTPPROXYPASSWORD=Your Proxy Password. Squid has 2 options: Useful for transparent proxy. HTTPProxySkip. You don't need to specify the HTTPPROXY environment variable, Squid will do the trick. Use this if you only want to setup TCP/Aproxy.

#3 Make changes to the configuration file. #4 Start the service: service squid start. And to test the changes we've made: #5 Test the proxy settings. Curl -s yourproxy.example.