Linux Networking Clearly Explained - lions-wing.net

CHAPTER 1 • CREATING A DIAL-UP INTERNET CONNECTION 39
Dialer, specifies the settings for a given PPP connection,
including the phone number, username, and password.
You can create two or more such sections if you wish.
The following illustrates a typical wvdial configuration in
/etc/wvdial.conf:
[Dialer Defaults]
Modem = /dev/ttyS1
Baud = 115200
Init1 = ATZ
Init2 = ATQ0 V1 E1 SO=0 &C1 &D2 S11=55
SetVolume = 1
Dial Command = ATDT
[Dialer MyConnection]
Username = suzanne
Password = ilw2mfc
Phone = 555-1212
Dial Prefix = 9,,
Area Code = 800
This configuration dials 9, waits two seconds, and then
dials 800-555-1212. When the ISP responds, it supplies
the username suzanne and the password ilw2mfc, and
establishes the connection using the ISP’s preferred
authentication method.
Figuring Out Whether You Are Online: Ping
If you are trying to figure out whether you are really connected
to the Internet, try this. Open a terminal window,
type ping followed by a space and the IP address of your
ISP’s DNS server, and press Enter. This utility sends information
to the specified server and requests a response. If
the server responds, you will see the response on the