Proxy Validation and Configuration in Linux server

[system]

How to validate and configure Proxy in Linux server?

To Validate a Proxy in Linux, you can follow these steps:

1. Check Proxy Settings:
   • First ensure that the proxy settings are configured correctly. Open a terminal and run the following command to specify the environment variable associated with the proxy system:

     • env | grep -i proxy

   • This will show the current Proxy Configuration

2. Test Proxy Connectivity:
   • Use tools like curl or wget to test if the proxy is working as expected. For example:

     • curl -I http://google.com

   • If the proxy is functioning correctly, you should see a standard HTTP response. Otherwise, you may encounter a connection error
3. Check Public IP Address:
   • Obtain your public IP address using the following command:

     • wget -q -O - checkip.dyndns.org | sed -e 's/.Current IP Address: //' -e 's/<.$//'

   • Compare this IP address with the one you expect from your proxy server.
4. Additionally, check if the http_proxy and https_proxy environment variable is present:

• env | grep https_proxy
  env |grep http_proxy

To configure the Proxy in Linux, follow these steps:

1. Temporary Proxy Configuration
   • To set up a temporary proxy connection that resets after a system reboot, use the export command in the terminal. Replace the placeholders with your actual proxy details:

     • export HTTP_PROXY="http://[proxy-web-or-IP-address]:[port-number]"
       export HTTPS_PROXY="http://[proxy-web-or-IP-address]:[port-number]"

   • Make sure to provide the proxy address (web or IP) and the corresponding port number.
2. Permanent Proxy Configuration (User-Specific)
   • Create and edit Configuration file ( If it doesn't exist) using this command

     • vi ~/.bashrc_proxy

   • Add the following lines, replacing “proxy_ip” and “proxy_port” with the appropriate values

     • export http_proxy="http://proxy_ip:proxy_port"
       export https_proxy="http://proxy_ip:proxy_port"
       

3. Save and exit the file by pressing the keys , "esc" ":" "wq" "!" "enter"
   • Apply the proxy settings:

     • source ~/.bashrc_proxy

     • 
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