Here we have something lots of users face up to in their early stages of
setting Linux up: Connecting to the Internet.
We'll see how we can do it, step by step, and in an easy way:
1.) The first thing:
check whether your kernel supports the PPP protocol or not; it's the protocol
most often used by Internet providers. Check by typing the following:
dmesg | more
Scroll pages by pressing the space key.
You should see a line such as the following:
PPP: version 2.2.0 (dynamic channel allocation)
TCP compression code copyright 1989 Regents of the
University of California
PPP Dynamic channel allocation code copyright
1995 Caldera, Inc.
PPP line discipline registered
If you don't have it, don't worry, you'll simply have to
recompile the kernel, selecting the appropiate
options. How do you recompile the kernel? Well, this issue
could well take a whole new article, but you can check it
out in the SLUG Linux list or in any other you might be
in. It is also well described in the README file
distributed with the kernel source code.
go to the
/etc/ppp directory, where we'll edit
The first one of them will be
the so-called "options" file.
with your favorite editor (not a few in Linux,
indeed... ;-) and delete everything it may have, surely
the word "lock".
Then write the
(only in case you are using Infovia in Spain) noipdefault
(choose speed: 38400, 57600, 115600. You
only have to write the number)
the file you wrote in the line connect in the
"options" file. In my case, for example, I'll
call it "dracnet":
chat -v "" ATE0DTXXXXXXX CONNECT "" login: my_login password: my_password
Next, save the file.
Where it reads ATE0DT, you can simply write
ATDT. I write the E0 option in order to
disable modem echo.
The XXXXXXX refers to
your Internet provider telephone number; in case you are
using Infovia (Spain), it will be 055.
3.) Now edit
the file associated with the line "+ua", in the
options file, which in my case I'll call
Don't forget to press Return
after the last line of the file.
4.) Next, go back in the directory
tree and position yourselves in the /etc
directory, with cd ..
Once there, edit the
file "resolv.conf". If you don't have it, no
problem. Just write the following (always deleting anything
it may contain before; assuming you're not networked with
other computers, you can do it peacefully ;-):
domain provider.com nameserver XXX.XXX.XXX.XXX
Save this file.
Note that the
"domain" section is just the domain your provider
uses. In my case it would be
"nameserver" section you'll put the IP address of
your provider's main name server.
If you don't
have these data available, please ask your provider for
them, he or she will give them to you.
Now go to /usr/bin (cd /usr/bin), and edit
a file called connect, by writing the
pppd;tail -f /var/log/messages
Save this and give it execute
permission with "chmod +x".
Here we have our Linux box, ready to connect to the
Internet. Just execute (from wherever we want) the file
"connect", that's all.
When you execute it,
you'll see, step by step, the connection process with our
provider, thanks to the "tail" command we wrote in
the "connect" script. When our IP address has
been assigned, we can get out of "tail" by