If you are having ubuntu desktop/laptop in your office or home behind proxy this tutorial is for you.This tutorial will explain How to Configure Ubuntu desktop/laptop to use your proxy server.
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Network Proxy
Ubuntu has a setting in gnome for the Network Proxy, which should set gnome’s proxy.
First go to System—>Preferences—>Network Proxy
Synaptic Package Manager
Synaptic Package Manager must have the proxy set, in order to update your installation using the in-built Update Manager or Synaptic GUI.
Go to System—>Administration—>Synaptic Package Manager
Firefox proxy Configuration
Open your firefox browser go to Edit—>Preferences
Terminal Proxy
If you want to configure proxy for apt-get,aptitude,wget use the following procedure
First you need to edit /etc/bash.bashrc file
gksudo gedit /etc/bash.bashrc
Add your proxy server details in the following format
export http_proxy=http://username:password@proxyhost:port/
export ftp_proxy=http://username:password@proxyhost:port/
Save and exit the file
Update the source list and you can restart your system
sudo apt-get update
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