Proxy settings in Linux Ubuntu and Debian for apt-get wget

A proxy server, also known as a "proxy" or "application level gateway", is a computer that acts as a gateway between a local network (e.g., all the computers at one company or in one building) and a larger-scale network such as the Internet. Proxy servers provide increased performance and security. In some cases, they monitor employees' use of outside resources.


One can do proxy settings graphically from System --> Preferences --> Proxy Settings
and apply "System wide" But if there is an authenticated proxy, It was unable to apply properly. That's why it is better to apply manually all the settings.

Proxy settings has to be done in 3 areas...

(Don't Use System --> Preferences --> Network Proxy after making the following settings. )

1)

Open a terminal and typein the following command.


gksudo gedit /etc/apt/apt.conf




Enter the following details as it is, then save and close.
Here user ---> is proxy user name
password ---> is your password for network access.

Acquire::http::Proxy "http://user_name:password@10.0.0.21:3128";
Acquire::ftp::Proxy "http://user_name:password@10.0.0.21:3128";
Acquire::https::Proxy "http://user_name:password@10.0.0.21:3128";

2)

After this enter:

gksudo gedit /etc/profile.d/proxy.sh



Enter the following things and save and close.

for example:

export http_proxy=http://username:password@10.0.0.21:3128
export ftp_proxy=http://username:password@10.0.0.21:3128
export all_proxy=http://username:password@10.0.0.21:3128
export https_proxy=http://username:password@10.0.0.21:3128
export no_proxy=localhost,127.0.0.1

3)

Then enter:

gksudo gedit /etc/wgetrc



The file will look like this...




Now enter the following things at the end of the file and save and close.

for example:

http_proxy=http://username:password@10.0.0.21:3128
ftp_proxy=http://username:password@10.0.0.21:3128
https_proxy=http://username:password@10.0.0.21:3128
no_proxy=localhost,127.0.0.1



Now one need to edit the software sources list

using the following command

gksudo gedit /etc/apt/sources.list



The file will look like this.





Search for #deb and #deb-src and delete the # symbol before deb

Don't delete the # symbol before deb cdrom

The final file should look like this. You may need to remove two times # symbol. Now save it and close.

NOW RESTART THE SYSTEM..

Now one can install "flashplugin-nonfree" directly from System --> Administration --> Synaptic.

For details, follow the instructions in the post:

http://conquer-ur-computer.blogspot.com/2010/10/ubuntu-ultimate-28-installation_8987.html

under the head: Installing new softwares :-

Otherwise open the terminal and enter the following commands:

sudo apt-get update

sudo apt-get install flashplugin-nonfree

Cheers...

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