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Set Proxy Ubuntu 16_04

• November 16, 2021
• 0

Setting up Proxy in Ubuntu – Medium

This post is for complete newbies to Ubuntu Linux. It explains how to setup people know about this, but for the sake of completeness, Open System Settings in Hardware, click on NetworkOn the left hand side plane, click on Network ProxyIn the Method drop down list, choose ManualFill up the and proxy. No need to set ftp and socks on Apply system like you have a Google Play Store for downloading Android apps, you have an apt-get package manager for installing applications in you have used Chrome or Firefox, you must have noticed that they interactively ask for proxy username and password. Unlike them, apt-get does not. Instead, it fails, saying “407 Proxy Authentication Required”Fortunately, apt-get uses proxy that you store in a file “/etc/apt/”Lets open this file and have a look. Open a terminal, and typesudo gedit /etc/apt/ see that gedit(a text editor) opens the file, and it has the following, we modify the file as follows, Replace , , and by your actual details. Save and close the text file. If you get any GTK-Warning on your terminal, ignore, to check if apt-get is working, type “sudo apt-get update” in the terminal and press you have done everything correctly, you shouldn’t get the “407 Proxy Authentication Required” error tting Proxy in bashrc itself would just take a minute. You would just have to follow some instructions and everything would work. But we are not going to do that. Instead, we are going to understand what we are doing and why we are doing it. Because that’s the Linux explaining about file, I need to explain what environment variables Linux, an environment variable is a system variable. Its just like a variable that you know from any other programming language – It has a name and a value. But instead of being part of a program, its part of your, why do we need environment variables? Broadly, environment variables provide information to the various processes running on your such example is the proxy environment view the proxy environment variables, open a terminal and type, env | grep proxyThe proxy environment variables are used by various processes to connect to the internet. One such example is the doing, wget “(operating_system)”It will say something like, Proxy tunneling failed: Proxy Authentication RequiredAs you might have guessed, wget is also like apt-get, in the sense that it doesn’t ask you for proxy username and password. Instead, it fails with a member 407. If you ever see it, you know that its a proxy, we have to modify the proxy environment variables to include username and doing, export _proxy=:@:/Again, replace , , and with your own details. Example _proxy=: export is a Linux command used to set and modify environment, try the wget again. This time, it will screenshot is given for your seems good. Close the behind proxyOpen another terminal and type, env | grep proxyYou will see that the proxy environment variables have been reset. Environment variables belong to a shell. Changes made to the environment of one shell does is not reflected in another, we have to type the export command every time we open a terminal. How comes our lord and saviour – bashrc file is a file that is executed when you open a terminal. Thus, you can put code into it, and it will be executed, as if you wrote that code after you opened the, we can put the export commands inside the bashrc file, and finally setup the a terminal, and type, gedit ~/. bashrcAnd add the following lines at the top, export _proxy=:@:/export _proxy=:@:/Of course, replace the details with your modified bashrc fileSave and close the I said earlier, bashrc runs every time you open a new shell. So close the terminal and open it again. Alternatively, you can run source to execute the bashrc ~/. bashrcNow, lets try this once | grep proxy wget “(operating_system)”If you reached here, then I have to say, you have successfully setup proxy in, the more you learn, the more there is to example, bashrc method only works for a particular user. So if you run a command using sudo, it does not make it work, you have to use the -E option of sudo. Check out the man page of sudo to learn more about the -E, what is the difference between shell and terminal? Are they the same? More to come.

How-To Configure Proxy On Ubuntu – Settings & Options!

Generally Proxies are used in business networks to prevent attacks and unexpected access and intrusions into the internal networks.
A proxy server can act as an intermediary between the client computer and the internet, and allows you to implement Internet access controls like authentication for Internet connection, sharing Internet connections, bandwidth control and content filtering and blocking.
If your home or office network is behind a proxy server, then you will need to setup proxy in order to browse the Internet.
In this tutorial, we will show you several ways to configure proxy settings in Ubuntu desktop.
Setting Up Proxy with Ubuntu Desktop GUI
You can setup the proxy in Ubuntu Desktop by following the below steps:
1. Open System Settings in Ubuntu as shown below:
2. Click on the Network => Network Proxy as shown below:
3. In the Method drop down list, choose Manual, provide proxy server’s hostname or IP address and port number.
4. Click on Apply system wide to apply the changes.
Setting Up Proxy with Ubuntu Desktop Terminal
You can also set proxy settings using environment variables. There are several environment variables available in Linux to setup a proxy for HTTP, HTTPS and FTP.
You can setup proxy for temporary usage and permanent for single and all users.
The basic syntax of setting up proxy as shown below:
proxy_=username:password@proxy-server-ip:port
Or
proxy_ftp=username:password@proxy-server-ip:port
Setting Up Permanent Proxy for Single User
You can setup a permanent proxy for a single user by editing the ~/ file:
First, login to your Ubuntu system with a user that you want to set proxy for.
Next open the terminal interface and edit the ~/ file as shown below:
nano ~/
Add the following lines at the end of the file that matches with your proxy server:
export _proxy=username:password@proxy-server-ip:8080
export _proxy=username:password@proxy-server-ip:8082
export ftp_proxy=username:password@proxy-server-ip:8080
exprot no_proxy=localhost, 127. 0. 1
Save and close the file when you are finished.
Then to activate your new proxy settings for the current session, use the following command:
source ~/
Setting Up Permanent Proxy for All User
You can also setup Permanent proxy for all users by setting up global variables in /etc/environment file.
To do so, login with root or administrative user and edit the /etc/environment file:
nano /etc/environment
_proxy=”username:password@proxy-server-ip:8080/”
_proxy=”username:password@proxy-server-ip:8082/”
ftp_proxy=”username:password@proxy-server-ip:8083/”
no_proxy=”localhost, 127. 1, ::1
Save and close the file when you are finished. You will need to logout and login again to activate the proxy settings.
Setting Up Proxy Temporary for Single User
In some cases, you don’t want to use proxy settings everytime. Then, you can set proxy environment variables temporary from the command line.
To setup and export the HTTP_PROXY variable temporary, open your terminal interface and run the following command:
export HTTP_PROXY=username:password@proxy-server-ip:8080
To setup and export the HTTPS_PROXY variable, run the following command:
export HTTPS_PROXY=username:password@proxy-server-ip:8081
Setting Up Proxy for APT
If you want to install some packages from the Ubuntu repository, you will need to create a separate proxy configuration file for APT.
To configure proxy settings for APT, you can simply create proxy configuration file under /etc/apt/
nano /etc/apt/
Add the following lines:
Acquire::::Proxy “username:password@proxy-server-ip:8080/”;
Acquire::::Proxy “username:password@proxy-server-ip:8081/”;
Save and close the file when you are finished. Now, you can install any package in your system.
You can also install the package by specifying your proxy settings with your command as shown below:
‘username:password@proxy-server-ip:8080’ apt-get install package-name
Conclusion
In the above guide, we learned how to setup proxy in Ubuntu using several methods. I hope you have now enough knowledge to setup proxy on Ubuntu system.

How do I configure proxies without GUI? – Ask Ubuntu

How do you configure proxy settings in the Ubuntu Server or Minimal (CLI) versions using the terminal?
Braiam63. 3k29 gold badges165 silver badges255 bronze badges
asked Aug 13 ’12 at 5:15
System-wide proxies in CLI Ubuntu/Server must be set as environment variables.
Open the /etc/environment file with vi (or your favorite editor). This file stores the system-wide variables initialized upon boot.
Add the following lines, modifying appropriately. You must duplicate in both upper-case and lower-case because (unfortunately) some programs only look for one or the other:
_proxy=”
ftp_proxy=”
no_proxy=”localhost, 127. 0. 1, localaddress,. ”
HTTP_PROXY=”
HTTPS_PROXY=”
FTP_PROXY=”
NO_PROXY=”localhost, 127. ”
apt-get, aptitude, etc. will not obey the environment variables when used normally with sudo. So separately configure them; create a file called 95proxies in /etc/apt/, and include the following:
Acquire::::proxy “;
Acquire::ftp::proxy “;
Finally, logout and reboot to make sure the changes take effect.
Sources: 1, 2. See 1 in particular for additional help, including a script to quickly turn on/off the proxies.
answered Aug 13 ’12 at 5:25
ishish133k36 gold badges297 silver badges309 bronze badges
11
Proxy Environment Variables:
_proxy: Proxy server for HTTP Traffic
_proxy: Proxy server for HTTPS traffic
ftp_proxy: Proxy server for FTP traffic
no_proxy: Patterns for IP addresses or domain names that shouldn’t use the proxy
The value for every proxy setting, except for no_proxy, uses the same template.
proxy_=username:password@proxy-host:port
Temporary setting proxy:
export
Persistent Proxy Settings:
use vim ~/. bash_profile to open bash setup file, then put following lines inside it
export no_proxy=localhost, 127. 1, *
use source ~/. bash_profile to apply the changes
answered Mar 22 ’19 at 2:55
Yossarian42Yossarian422392 silver badges5 bronze badges
1
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