Browsing Finnish translation

513.

Establishing a wired connection

514.

\marginnote{Are you already online? If the NetworkManager icon in the top panel shows a connection then you may have successfully connected during the Ubuntu setup process. You can also simply open a browser and see if you have access to the Internet. If so, you do not need to do anything for the rest of this section.} If you have an \emph{Ethernet} cable running from a wall socket or networking device, such as a switch or router, then you will want to setup a wired connection in Ubuntu.

515.

In order to connect to the Internet with a wired connection, you need to know whether your network supports \gls{DHCP} \emph{(Dynamic Host Configuration Protocol)}. \acronym{DHCP} is a way for your computer to automatically be configured to access your network and/or Internet connection. \acronym{DHCP} is usually automatically configured on your router. This is usually the quickest and easiest way of establishing a connection to the Internet. If you are unsure whether your router is setup to use \acronym{DHCP}, you may wish to contact your \gls{ISP}'s \emph{(Internet Service Provider)} customer service line to check. If your router isn't configured to use \acronym{DHCP} then they will also be able to tell you what configuration settings you need in order to get online.

516.

Automatic connections with DHCP

517.

\marginscreenshot{03-connection-information.png}{ss:connection-information}{This window displays your \acronym{IP} address and other connection information.} If your network supports \acronym{DHCP} then you may already be set up for online access. To check this, click on the NetworkManager icon. There should be a ``Wired Network'' heading in the menu. If ``Wired connection 1'' appears directly underneath, then your machine is currently connected and probably setup for \acronym{DHCP}. If ``Disconnected'' appears in gray underneath the wired network section, look below to see if an option labeled ``Wired connection 1'' appears in the list. If so, click on it to attempt to establish a wired connection.

518.

\marginnote{An \acronym{IP} (Internet Protocol) address is a unique number assigned to your machine so that your router can identify you on the network. Think of it like a phone number for your computer. Having this unique address allows the router to speak to your computer, and therefore send/receive data. If you are still not online after following these steps, you may need to try setting up your network connection manually using a static \acronym{IP} address.} To check if you are online, click on the NetworkManager icon in the top panel and select the Connection Information option. You should see a window showing details of your connection. If your \acronym{IP} address is displayed as 0.0.0.0 or starts with 169.254, then your computer was not successfully assigned connection information through \acronym{DHCP}. If it shows another address (\eg, 192.168.219.133), then it is likely that your \acronym{DHCP} connection to the router was successful. To test your Internet connection, you may want to open the Firefox web browser to try loading a web page. More information on using Firefox can be found later in this chapter.

519.

Manual configuration with static address

520.

If your network does not support \acronym{DHCP} then you need to know a few items of information before you can get online. If you do not know any of this information, then you call your \acronym{ISP}.

521.

An \define{\acronym{IP} address} \dash This is a unique address used for identifying your computer on the network. An \acronym{IP} address is always given in four numbered groups, separated by dots, for example – 192.168.100.10. When connecting using \acronym{DHCP}, this address will periodically change (hence, the name ''dynamic''). However, if you have configured a static \acronym{IP} address, your IP address will never change.

522.

A \define{network mask} \dash This tells your computer the size of the network to which it is being connected. It is formatted the same way as the \acronym{IP} address, but usually looks something like 255.255.255.0.