There are mainly three ways to connect internet with your laptop.
1. Through the ethernet port normally a broadband connection.
2.Wi-Fi
3.USB modem
You may have some other ways also.Now in my case I love Debian/Linux operating system but I coud't connect Internet using first option because ethernet port is working correctly but I couldn't afford it,second one is availavle for me but my Wi-Fi chip has some driver problem.So I decided to connect Internet through my GPRS enabled cellphone(Nokia N72).After searching too many pages and trying many things and after finding a very good help from Linux Gujarat Group from google group.I 've been able to connect it.After my experience I made one tutorial which may helpful to you.
In my experience I used,(It may be work fine with other cellphones and Linux distros also)
Operating system : Debian Lenny 5.0
cellphone : Nokia N72(using DKU data-cable)
Service provider : Airtel India
step1:
First of all we need to configure the modem parameters of your cell phone.Connect the cell phone to the laptop computer with the USB cable.After that we require special package called wvdial(you must have connectivity with Internet for downloading,I used ethrnet connection of my friend)
And then type as root:
# apt-get install wvdial
after that
# wvdialconf
step 2:
After doing this, wvdialconf has examined your cell phone and after a successful connection with it has determined the correct parameters of your modem and written it to a file. But now we must tweak this configuration file, so that we type as root:
# apt-get install gedit
# gedit /etc/wvdial.conf
You need to delete the following lines of code:
Modem Type = USB Modem Modem = /dev/ttyACM0
-Your wvdial.conf should have the code like this one : (you may require some changes according to your service provider,If its same then just copy and paste the below code)
[Dialer blz-scb]
Modem = /dev/rfcomm0
[Dialer usb-scb]
Modem = /dev/ttyACM0
Modem Type = USB Modem
[Dialer Defaults]
APN = airtelgprs.com
Init1 = ATZ
Init2 = ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0
Init3 = AT+CGDCONT=1,"IP","airtelgprs.com"
Modem Type = USB Modem
ISDN = 0
Phone = *99#
Username = A
New PPPD = yes
Password = B
Modem = /dev/ttyACM0
Baud = 460800
Now we save the file without changing name nor location and we are ready. The cell phone modem is completely configured, and we can use it.
step 3 :
Before connecting your laptop to your cell phone, we first need to bring down your existing network connection. To do that, we type as root:
# ifconfig eth0 down # mv /etc/resolv.conf /etc/resolv.conf.eth0
-
And eth0 is the name of your active network interface. In case you are not sure about the name of your interface, just type as root:
# ifconfig
So that all active interfaces will appear.
step 4 :
If you want to connect your laptop to the internet via USB to your cell phone. Just connect the cables and type as root:
# wvdial usb-scb&
You are done. You can surf the web, or check your e-mail.
This is it,If you've any problem regarding this topic you can ask in comments.
Sources:
1. http://wiki.debian.org/UseYourCellPhoneAsModem?highlight=%28%28UseYourCellPhoneAsModem%29%29
2. http://groups.google.com/group/linux-gujarat/browse_thread/thread/46aefbb82dec1b13?hl=en&pli=1
