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92 lines
3.6 KiB
Plaintext
92 lines
3.6 KiB
Plaintext
This directory contains a set of scripts which have been used on Linux
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systems to initiate or maintain a connection with PPP. The files in
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this directory were contributed by Al Longyear (longyear@netcom.com).
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------------------------------------------------------------------------
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1. README
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This file. You are reading it. It is just documentation.
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------------------------------------------------------------------------
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2. ppp-on
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This script will initiate a connection to the PPP system. It will run
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the chat program with the connection script as a parameter. This is a
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possible security hole. However, it is simple. It is meant to replace
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the previous version of ppp-on which was not very functional.
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The ppp-on script has entries for the account name, password, IP
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addresses, and telephone numbers. The parameters are passed to the
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pppd process and, then in turn, to the second part of the connect
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script, as a set of environment variables.
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Please make sure that you put the full path name to the ppp-on-dialer
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script in the reference to it in ppp-on.
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------------------------------------------------------------------------
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3. ppp-on-dialer
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This is the second part to the simple calling script, ppp-on. It
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executes the chat program to connect the user with a standard UNIX
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style getty/login connection sequence.
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------------------------------------------------------------------------
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4. callback
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This script may be used in lieu of the ppp-on-dialer to permit the
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common modem callback sequence. You may need to make changes to the
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expected prompt string for the modem.
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The script works by disabling the system's detection of the DCD
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condition and working on the modem status message "NO CARRIER" which
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is generated when the modem disconnects.
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It is crude. It does work for my modem connection. Use as you see fit.
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------------------------------------------------------------------------
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5. redialer
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The redialer script is a replacement for the ppp-on-dialer script. It
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will do 'attack dialing' or 'demon dialing' of one or more telephone
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numbers. The first number which responds will be used for a
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connection.
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There is a limit of ten attempts and a 15 second delay between dialing
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attempts. Both values are set in the script.
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------------------------------------------------------------------------
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6. ppp-off
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This is a script which will terminate the active ppp connection. Use
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as either "ppp-off" to terminate ppp0, or "ppp-off <device>" to
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terminate the connection on <device>. For example, "ppp-off ppp2" will
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terminate the ppp2 connection.
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------------------------------------------------------------------------
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7. secure-card
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This script was written by Jim Isaacson <jcisaac@crl.com>. It is a script
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for the 'expect' programming language used with Tcl. You need to have
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expect and Tcl installed before this script may be used.
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This script will operate with a device marketed under the name "SecureCARD".
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This little device is mated with its controller. On the credit card size
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device, there is a sequence number which changes on a random basis. In order
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for you to connect you need to enter a fixed portion of your account name
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and the number which is displayed on this card device. The number must match
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the value at the controller in order for the account name to be used.
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The problem is that chat uses fixed response strings. In addition, the
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timing for running the script may prevent the use of a script that reads the
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value before it starts the dial sequence. What was needed was a script which
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asked the user at the user's console at the time that it is needed.
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This led to the use of expect.
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