How do i use my DSL connection in Ubuntu?

Actually, Ubuntu is often really easy too. It's just a different way of thinking.

In this case, you are on the right track. In the networking configuration (it might ask for a password when you open it since you changing system settings - use the password you chose during install), check the box next to wired connection and then click properties. Make sure that is set to DHCP. Close and reboot (you can also restart networking from the command line but when you are new rebooting is usually easier).

That should do it. If not, you might have some other things to set up (like with the router or modem). Actually, this is usually set up automatically during install so it's possible something else needs to be done. Try this first, however, and let us know what happens. Oh, and make sure all the network cables are plugged in and such.

I have DSL. The modem has it's own LAN IP address and acts as a file server.

I have that connected to a D-Link router which can look for an automatic connection and provide users with connections. There are 2 computers in the house that share the internet connection - one of them is wireless!

In Windows and in Macintosh it has always been sufficient to tell the computer to set the DNS server address and the Gateway address to both the IP address of the box that connects to the real world (Router, modem, whatever). I set the Subnet Mask to 255.255.255.0.

Then I manually set the computer's IP address to something within the range which the "box that connects to the real world" is providing (usually 192.168.2.xxx or 192.168.0.xxx).

I'm new to UBuntu Linux, I installed it only this past week and I managed to configure it along the very same lines as I did for Windows and Macintosh. It worked immediately.

I hope this helps to guide you? You don't need to do anything with the command line, you can set all of this up in the graphical interface portion and it should work right away.

Jim Hutchinson, I did what you said. After I restarted Ubuntu, I saw the message teeling me that the wired connection is working but when I opened my Firefox and tried google, it can't server.

George is right, you can do a lot from the GUI but in order to figure this out we are going to use a terminal. Open one (apps -> accessories -> terminal) and type

ifconfig

Post the output here. You should see something that says inet addr:192.168.x.x or similar. That should be your computer's IP address. If it is all 0.0.0.0 then you are not getting an address from the router. It's possible it's not seeing the router. Do you know your router's IP address? It's often something like 192.168.0.1 or 192.168.1.1. It would be the same IP you use to log into the router/modem. You can check to see if the problem is from the computer to the router/modem or from the router/modem to the world. First try pinging the router or modem. In a terminal type

ping 192.168.0.1 (or the gateway IP of your router or modem)

If you get output similar to

64 bytes from 192.168.0.1: icmp_seq=1 ttl=255 time=0.854 ms
64 bytes from 192.168.0.1: icmp_seq=2 ttl=255 time=0.578 ms
64 bytes from 192.168.0.1: icmp_seq=3 ttl=255 time=0.561 ms

your connection to the router or modem is fine and the problem is your connection to the world. If you get something like "Destination Host Unreachable" then it's a problem with the connection from the computer or with the configuration (assuming you have the right IP for the router or modem). Run these tests and tell me what you find.

By the way, do you have just the DSL modem or is there a wireless router in the mix?

Hello,
i have the same problem: a DSL modem and i have to configure it with username and password. But i cannot find no place in ubuntu where i can do it... Just turning on network settings ("automatic configuration(DHCP)") is not sufficiant. I think, computer is connecting to modem, but modem is not connecting to internet because username and password is not set. In Windows i store both in DSL configuration and in old suse-linux it was the same. My DSL modem is no server, just a DSL modem.

Thank you for help
Best regards

@krk if your modem is connected via ethernet cable please simply setup your user and password using the pppoeconf utility so:

Please open a Terminal from the menu Applications->Accessories->Terminal and type:

sudo pppoeconf

Please give your user password when requested, you don't see nothing when you type it, then press enter.

Configure your connection details.

Then try to open a web address using Firefox.

Hope this helps

Hello,
thank you for your fast answer :-)

I have found this in Help for PPPoE setting. But if i do it, i get following answer:
Sorry, I scanned 2 interfaces, but access concentrator of your provider did not respond. Please check your network and modem cables (i have done and it is running with windows). Another reason ifor the scan failure may also be another running pppoe process whitch controls the modem.

I don't know if there is running another process

Best regards

@krk

Plase tell the model and brand of your dsl modem.

Thank you.

Hello,
now it is running! I have installed an additional ethernet card and i am using it instead of onboard ethernet.

Now a new problem with firefox: i will import my bookmarks, i have them as html. But if i am selecting import from html i dont see this file in selected directory but i can see it in file browser. Where is firefox storing bookmarks and cookies in the file system, i cannot find them, it is so big...

Best regards

@krk please make a new question about Firefox

Please make new question from here: https://answers.launchpad.net/ubuntu/+addquestion
you will get better chance to get right answer on a fresh tagged "open" question.

Thank you

I have the same problem that @krk had with his modem. Mine is an Aztech 602 modem. ADSL connection. Whn i run sudo pppoeconf, it said: "Sorry, I scanned 2 interfaces, but access concentrator of your provider did not respond. Please check your network and modem cables (i have done and it is running with windows). Another reason ifor the scan failure may also be another running pppoe process whitch controls the modem."

Also, when i type in modconf, it says tht it has not been installed yet and asks me to key in something like apt-get install modconf .....i did it but it says thjat modconf has not been found yet....

Last time I forgot my password and tried everything i could do but failed, until I found this great tool Password Genius. It works great, and you can google it.