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PPP: Networking Over Modems
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For Debian use pppconfig to configure your network
connections. This tool will request the appropriate information and
knows about chat scripts and PAP connections. It will ask you to name
the connection you want to configure, with a default name of
provider. It will then generate the appropriate configuration
scripts in [ppp]/etc/chatscripts/provider and
[ppp]/etc/ppp/peers/provider (the provider in these
paths is replaced with the name you supply pppconfig).
The plog command will show you the ppp log which is in
[plog]/var/log/ppp.log. To watch the plog file issue the
command plog -f as root or else as a user in the group adm.
The pppconfig command allows you to configure your modem
connections. Essentially it is a front end to the various scripts in
/etc/ppp. My PCMCIA modem is loaded at /dev/ttyS1. Newer versions of
ppconfig check the serial ports for modems for you. Usually,
/dev/ttyS0 corresponds to COM1 under MS/Windows and
/dev/ttyS1 corresponds to COM2.
To allow users other than root to connect through the modem (using
the pon and poff pair of commands) add the users to the Unix group
"dip":
Then, next time user kayon logs on he will be in group
dip in addition to the other groups he was already in. He
will then be able to initiate and terminate a dial up
session. However, user kayon does not have access to the log file
through the plog command--only root does, presumably for security
reasons, since unless you inhibit it, passwords can be displayed
there.
Further information on PPP is available from
Subsections
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