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Linux DialUp Connectivity |
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Dial-up is a way of establishing connection with another system through a serial port using a modem and a telephone line. To do this there are utilities available for the command line as well as via the Linux GUI.
The utility available for use at the command line is wvdial and via the GUI is kppp. The following is the brief description of how to use these utilities.
The wvdial Dialup Tool
This is the GUI tool available for Dialup configuration, it is required that the package listed below is installed.
wvdial-1.41-15.rpm and ppp-2.4.1-2.rpm
Now create a blank file under /etc/ with the name wvdial.conf and do the following:
touch /etc/wvdial.conf
wvdialconf /etc/wvdial.conf
This will scan the available serial ports and probe the modem. Once complete edit wvdial.conf and customize appropriately by entering a username, password and telephone number. The file looks as indicated below:
[Dialer Default] modem = /dev/ttyS2
baud = 57600
init = ATZ
init2 = ATS11=50
phone = 555-4242
username = lansmart
password = my-password
In case of Rockwell chipset modems it is required to change the Init2 string as:
init2 = AT&FX3L3S10 =255
After the above change the permission of wvdial.conf to read / write by root only:
chmod 600 /etc/wvdial.conf
After this execute wvdial at the System prompt.wvdial
This will initialise the modem and start dialing, and connect to the ISP.
To disconnect use the keyboard signal Ctrl - C.
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Linux Dialup Connectivity 
