How to Set up a Network in Ubuntu

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Last Updated: October 8, 2020

Configuring networks such as a Digital Subscriber Line (DSL) or Asynchronous Digital Subscriber Line (ADSL) primarily used for accessing the internet can be a hassle, especially when you aren't using the same operating system as what the directions were originally written for. This article is a starting point for configuring DSL using Ubuntu Linux.

Steps

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Go to “System”, “Preferences” and chose “Network Connections."
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Click on “IPV4 Settings” tab. Chose the “Automatic (DHCP)” option if your network has a DHCP server. The DHCP Server has automatically assigned the IP address to your system. Click "Apply."
- You also chose the “Manual” option from the Method drop-down list and assign the IP address, netmask and gateway manually. You'll also have to assign the DNS Server address. Click "Apply."
Go to “Applications” “Accessories” and chose “Terminal."
“sudo ifconfig” without quotes.
The Ifconfig command will show the inet address, broadcast address and mask address.

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How do I check the LAN connection on Ubuntu?

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Open Network Connections to set up network settings in Ubuntu. Under the “Wired” tab, click on “Auto eth0” and select “Edit." Click on “IPV4 Settings” tab. Check the IP address settings. Type the following command into terminal: “sudo ifconfig” without quotes. Get your new addresses.

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How do I find the DHCP client ID?

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Open terminal and type "ipconfig." You'll find your Adapter name there, the IP address, and the broadcast address too.

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After choosing Terminal, I don't see any option to write a command. What can I do?

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There is no 'option'. You can type in the command and press Enter on your keyboard, and it will run the command.

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Tips

If you have another way to get online, and don't understand what your service provider has told you (or if they can't help because they do not offer anything besides help with Windows), use an IRC chat program (such as MIRC or XChat) to connect to irc.freenode.net. Type /join #ubuntu and ask your questions there. You will not find out the IP address for your DSL router, but any Ubuntu specific questions should be answered.

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If you have an ethernet modem instead of a router, you can use the command PPPOECONF, and a wizard will guide you through the configuration steps of a PPPoE Connection.

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If you have a Live CD, try booting from that. If it successfully configures the network connection, open System->Administration->Networking and make a note of the settings. Reboot to the installation, and apply those settings, and it should work.

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Warnings

If you are inexperienced with computers, don't do anything that you are not told to do. You can do more harm than good by not following directions provided by technical support, and it could mean that you have to spend more time setting things up for DSL because your box may need to be reset.

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