A proxy allows you to surf the web with the help of an intermediary server that can boost performance and provide a level of security for you. Most of the time, if you need to change or fix your proxy server settings, it is the result of your network administrator request. Popular browsers allow you to change your proxy settings with a few clicks of your mouse.
Video of the Day

Internet Explorer
Step
Start your Internet Explorer.
Step
Hit "Tools" in the main menu bar.
Step
Scroll down and hit "Internet Options."
Step
Hit the "Connections" tab.
Step
Select "LAN settings."
Step
Place or remove a check mark in the box next to "Use a proxy server for your LAN."
Step
Review the address in the "Address" field for your proxy server. View and edit, if necessary, the number of the port in the "Port" field.
Step
Hit the "Advanced" button to view and edit individual proxy server addresses.
Step
Hit the "OK" button, close all windows and restart your browser.
Firefox
Step
Start your Firefox browser.
Step
Hit "Tools" in the main menu bar.
Step
Scroll down and click "Options."
Step
Hit the "Advanced" tab. Click the "Network" tab. Hit the "Settings" button.
Step
Choose "No Proxy," "Auto-detect proxy settings for this network," "Manual proxy Configuration" or "Automatic proxy configuration URL" with the radio button.
Step
View and edit the server names and port numbers if your selection in Step 5 was "Manual proxy configuration."
Step
View and edit the URL if you selected "Automatic proxy configuration URL" in Step 5.
Step
Hit the "OK" button and restart your browser.