WvDial is a Point-to-Point Protocol dialer: it dials a modem and starts pppd in order to connect to the Internet.
When WvDial starts, it first loads its configuration from Template:Filename and Template:Filename . If Template:Filename is not present, the easiest way to create it is to use the provided configuration utility wvdialconf.
It helps in generating the configuration file needed by WvDial. wvdialconf detects your modem, and fills in automatically the Modem, maximum Baud rate, and a good initialization string (Init options) and generates or updates the WvDial configuration file (Template:Filename) based on this information.
It is safe to run wvdialconf if a configuration file already exists. In that case, only the Modem, Baud, Init, and Init2 options are changed in the [Dialer Defaults] section, and only if autodetection is successful.
After you have filled in your login information, wvdial ought to work. However for providers of USB modems that require a specific Init string and user/password combination, mkwvconf-git in AUR can help generate a wvdial configuration (based on the mobile-broadband-provider-info-git package).
A typical Template:Filename looks like this after manual configuration:
[Dialer Defaults] Init1 = ATZ Init2 = ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0 Modem Type = Analog Modem ISDN = 0 Modem = /dev/ttyUSB2 Baud = 9600 [Dialer thenet] Phone = *99***1# Username = thenetuser Password = thenetpw Stupid Mode = 1 Baud = 460800 Init3 = AT+CGDCONT=1,"IP","apn.thenet.net" [Dialer mypin] Init4 = AT+CPIN=1234
There are a few different ways of giving regular users the ability to use wvdial to dial a ppp connection. This document describes three different ways, each of them differ in difficulty to set up and the implication on security.
wvdial is run with the following command.
# wvdial <section>
Leave <selection> blank if you have not added a section or if Template:Filename is auto-generated.
This is arguable the easiest setup but has major impact on system security since it means that every user can run wvdial as root. Please consider using one of the other solutions instead.
As normal users cannot use wvdial to dial a ppp connection by default, change permissions:
# chmod u+s /usr/bin/wvdial
You should see the following permissions:
# ls -l /usr/bin/wvdial -rwsr-xr-x 1 root root 114368 2005-12-07 19:21 /usr/bin/wvdial
Using a dialout group
Another, slightly more secure way is to set up a group called dialout (call the group as prefered) and give members of this group permission to run Template:Codeline as root.
First create the group and add the users to it:
# groupadd dialout # gpasswd -a username dialout
Then set the group and adjust the permissions on Template:Codeline:
# chgrp dialout /usr/bin/wvdial # chmod u+s,o= /usr/bin/wvdial
The files should have the following permissions: Template:Command
- See main article: sudo
sudo arguably offers the most secure option to allow regular users to establish dial-up connections using Template:Codeline. It can be used to give permission both on a per-user and group basis. Another benefit of using Template:Codeline is that it is only needed to do the setup once; both previous solutions will be "undone" when a new package of Template:Codeline is installed.
To give a specific user permission to run Template:Codeline as root, add the following line (changing the username):
username localhost = /usr/bin/wvdial
To give all members of a group (Template:Codeline in this case) the same permission:
%dialout localhost = /usr/bin/wvdial
If Template:Codeline shows a pppd entry, it means that the session is ready.