Ubuntu Server Proxy Settings

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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 Settings on Ubuntu 20.04 - phoenixNAP

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How to Configure Proxy Settings on Ubuntu 20.04 – phoenixNAP

Introduction
Using a proxy server as an internet access intermediary is a common business scenario. However, personal users can also benefit from increased network security, privacy, and speed provided by proxies.
In this tutorial, you will learn how to set up your Ubuntu 20. 04 system to work with a proxy server.
Prerequisites
Ubuntu 18. 04 or laterAccess to terminal with sudo privilegesProxy info (web or IP address, username, and password)
Setting Up Proxy with Ubuntu Desktop GUI
1. To access proxy settings using the Ubuntu GUI, open Ubuntu’s main Settings.
2. Select the Network setting in the menu on the left side of the window.
3. Then, click the cog in the Network Proxy section.
4. A Network Proxy dialogue appears. Choose Manual and enter your proxy info into the fields below.
5. Exit the dialogue and Ubuntu will automatically apply the proxy settings.
Setting up Proxy With Ubuntu Desktop Terminal
Use the command line interface for more granular control of proxy settings. This allows you to:
Make temporary or permanent changes to the up proxy for a single user or for all users.
Setting Up Temporary Proxy for a Single User
A temporary proxy connection resets after a system reboot. To establish such a connection for the current user, use the export command.
The syntax for establishing a temporary proxy connection is:
export HTTP_PROXY=[username]:[password]@[proxy-web-or-IP-address]:[port-number]
export HTTPS_PROXY=[username]:[password]@[proxy-web-or-IP-address]:[port-number]
export FTP_PROXY=[username]:[password]@ [proxy-web-or-IP-address]:[port-number]…
export NO_PROXY=localhost, 127. 0. 1, ::1
Provide the proxy address (web or IP), followed by the port number. If the proxy server requires authentication, add your proxy username and password as the initial values.
This is what the set of commands should look like in terminal:
The purpose of the NO_PROXY line is to tell the system that local traffic should ignore the proxy.
Setting Up Permanent Proxy for a Single User
As stated above, proxy settings configured through a terminal window reset after you reboot your system. To make permanent changes for a single user, edit the file.
1. Open the file with a text editor of your choice:
sudo nano ~/
2. Now add the following lines at the bottom of the file:
export HTTP_PROXY=”[username]:[password]@[proxy-web-or-IP-address]:[port-number]”
export HTTPS_PROXY=”[username]:[password]@[proxy-web-or-IP-address]:[port-number]”
export FTP_PROXY=”[username]:[password]@ [proxy-web-or-IP-address]:[port-number]”…
export NO_PROXY=”localhost, 127. 1, ::1″
3. Save and exit the file.
4. Then, run the following command in to apply the new settings to the current session:
source ~/
Setting Up Permanent Proxy for All Users
To permanently set up proxy access for all users, you have to edit the /etc/environment file.
1. First, open the file in a text editor:
sudo nano /etc/environment
2. Next, update the file with the same information you added to the file in the previous scenario:
3. Save the file and exit. The changes will be applied the next time you log in.
Setting Up Proxy for APT
On some systems, the apt command-line utility needs a separate proxy configuration, because it does not use system environment variables.
1. To define proxy settings for apt, create or edit (if it already exists) a file named in /etc/apt directory:
sudo nano /etc/apt/
2. Add the following lines to the file:
Acquire::::Proxy “[username]:[password]@ [proxy-web-or-IP-address]:[port-number]”;
3. The configuration will be applied after a reboot.
Conclusion
This tutorial provided instructions on how to set up proxy settings on Ubuntu 20. 04. You should now know how to make temporary and permanent changes to your system’s proxy configuration, for a single user or for the entire system.
How do I configure proxies without GUI? - Ask Ubuntu

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:[email protected]: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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Frequently Asked Questions about ubuntu server proxy settings

Where is proxy setting in Ubuntu?

Setting Up Proxy with Ubuntu Desktop GUITo access proxy settings using the Ubuntu GUI, open Ubuntu’s main Settings.Select the Network setting in the menu on the left side of the window.Then, click the cog in the Network Proxy section.A Network Proxy dialogue appears.More items…•Dec 10, 2020

How do I find my proxy server settings?

In any Windows version, you can find the proxy settings via the Control Panel on your computer.Click on Start and open the Control Panel. Then click on Internet Options.In the Internet Options, go to Connections > LAN settings.Here you have all the settings that are related to setting up a proxy in Windows.

How do I setup a proxy server in Linux?

Install Proxy Server: Squid ProxyStep1: Update the server sudo yum update -y.Step 2: Configure EPEL repo. … Step 3: Install squid sudo yum -y install squid.Step 4: Start and enable squid server. … Step 5: Check the status of squid server. … Step 1: Install httpd-tools sudo yum -y install httpd-tools.More items…•Aug 11, 2018

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