A nice little PPP.doc file from:
Submitted by: Gennady B. Sorokopud ( gena@NetVision.net.il )
This commit is contained in:
Poul-Henning Kamp
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share/FAQ/PPP.doc
Executable file
368
share/FAQ/PPP.doc
Executable file
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Info about setting up pppd daemon on FreeBSD-2.0
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Before you start setting up PPP on your machine make
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sure that pppd is located in /usr/sbin and directory /etc/ppp
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exists.
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pppd can work in two modes:
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i) as a "client" , i.e. you want to connect your machine to outside
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world via PPP serial connection or modem line.
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ii) as a "server" , i.e. your machine is located on the network and
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used to connect other computers using PPP.
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In both cases you will need to set up an options file ( /etc/ppp/options
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or ~/.ppprc if you have more then one user on your machine that uses
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PPP ).
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You also will need some modem/serial software ( preferably kermit )
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so you can dial and establish connection with remote host.
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1) Working as a PPP client
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I used the following options to connect to CISCO terminal server PPP
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line.
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----/etc/ppp/options-------
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crtscts # enable hardware flow control
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modem # modem control line
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noipdefault # remote PPP server must supply your IP address.
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# if the remote host doesn't send your IP during IPCP
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# negotiation , remove this option
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passive # wait for LCP packets
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domain ppp.foo.com # put your domain name here
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:<remote_ip> # put the IP of remote PPP host here
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# it will be used to route packets via PPP link
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# if you didn't specified the noipdefault option
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# change this line to <local_ip>:<remote_ip>
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defaultroute # put this if you want that PPP server will be your
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# default router
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-------------------------
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To connect:
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i) Dial to the remote host using kermit ( or other modem program )
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enter your user name and password ( or whatever is needed to enable PPP
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ont the remote host )
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ii) Exit kermit. ( without hanging up the line )
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iii) enter:
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/usr/src/usr.sbin/pppd.new/pppd /dev/tty01 19200
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( put the appropriate speed and device name )
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Now your computer is connected with PPP. If the connection fails for some
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reasons you can add the "debug" option to the /etc/ppp/options file
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and check messages on the console to track the problem
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Following script will make all 3 stages automatically:
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-----/etc/ppp/pppup--------
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#!/bin/sh
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ps ax |grep pppd |grep -v grep
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pid=`ps ax |grep pppd |grep -v grep|awk '{print $1;}'`
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if [ "X${pid}" != "X" ] ; then
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echo 'killing pppd, PID=' ${pid}
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kill ${pid}
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fi
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ps ax |grep kermit |grep -v grep
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pid=`ps ax |grep kermit |grep -v grep|awk '{print $1;}'`
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if [ "X${pid}" != "X" ] ; then
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echo 'killing kermit, PID=' ${pid}
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kill -9 ${pid}
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fi
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ifconfig ppp0 down
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ifconfig ppp0 delete
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kermit -y /etc/ppp/kermit.dial
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pppd /dev/tty01 19200
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-----------------------------
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/etc/ppp/kermit.dial is kermit script that dials and makes all
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necessary authorization on the remote host.
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( Example of such script is attached to the end of this document )
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Use the follwing script to disconnect the PPP line:
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-----/etc/ppp/pppdown--------
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#!/bin/sh
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pid=`ps ax |grep pppd |grep -v grep|awk '{print $1;}'`
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if [ X${pid} != "X" ] ; then
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echo 'killing pppd, PID=' ${pid}
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kill -TERM ${pid}
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fi
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ps ax |grep kermit |grep -v grep
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pid=`ps ax |grep kermit |grep -v grep|awk '{print $1;}'`
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if [ "X${pid}" != "X" ] ; then
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echo 'killing kermit, PID=' ${pid}
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kill -9 ${pid}
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fi
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/sbin/ifconfig ppp0 down
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/sbin/ifconfig ppp0 delete
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kermit -y /etc/ppp/kermit.hup
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/etc/ppp/ppptest
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------------------------------
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Check if PPP is still running:
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-----/etc/ppp/ppptest---------
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#!/bin/sh
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pid=`ps ax| grep pppd |grep -v grep|awk '{print $1;}'`
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if [ X${pid} != "X" ] ; then
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echo 'pppd running: PID=' ${pid-NONE}
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else
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echo 'No pppd running.'
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fi
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set -x
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netstat -n -I ppp0
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ifconfig ppp0
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-----------------------------
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Hangs up modem line:
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-----/etc/ppp/kermit.hup-----
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set line /dev/tty01 ; put your modem device here
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set speed 19200
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set file type binary
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set file names literal
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set win 8
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set rec pack 1024
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set send pack 1024
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set block 3
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set term bytesize 8
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set command bytesize 8
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set flow none
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pau 1
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out +++
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inp 5 OK
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out ATH0\13
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echo \13
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exit
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----------------------------
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2) Working as a PPP server
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------/etc/ppp/options------
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crtscts # Hardware flow control
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netmask 255.255.255.0 # netmask ( not required )
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192.114.208.20:192.114.208.165 # ip's of local and remote hosts
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# local ip must be different from one
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# you assigned to the ethernet ( or other )
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# interface on your machine.
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# remote IP is ip address that will be
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# assigned to the remote machine
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domain ppp.foo.com # your domain
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passive # wait for LCP
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modem # modem line
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----------------------------
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Following script will enable ppp server on your machine
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-----/etc/ppp/pppserv-------
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#!/bin/sh
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ps ax |grep pppd |grep -v grep
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pid=`ps ax |grep pppd |grep -v grep|awk '{print $1;}'`
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if [ "X${pid}" != "X" ] ; then
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echo 'killing pppd, PID=' ${pid}
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kill ${pid}
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fi
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ps ax |grep kermit |grep -v grep
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pid=`ps ax |grep kermit |grep -v grep|awk '{print $1;}'`
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if [ "X${pid}" != "X" ] ; then
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echo 'killing kermit, PID=' ${pid}
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kill -9 ${pid}
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fi
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# reset ppp interface
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ifconfig ppp0 down
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ifconfig ppp0 delete
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# enable autoanswer mode
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kermit -y /etc/ppp/kermit.ans
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# run ppp
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pppd /dev/tty01 19200
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----------------------------
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Use this script to stop ppp server:
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-----/etc/ppp/pppservdown---
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#!/bin/sh
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ps ax |grep pppd |grep -v grep
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pid=`ps ax |grep pppd |grep -v grep|awk '{print $1;}'`
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if [ "X${pid}" != "X" ] ; then
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echo 'killing pppd, PID=' ${pid}
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kill ${pid}
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fi
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ps ax |grep kermit |grep -v grep
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pid=`ps ax |grep kermit |grep -v grep|awk '{print $1;}'`
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if [ "X${pid}" != "X" ] ; then
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echo 'killing kermit, PID=' ${pid}
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kill -9 ${pid}
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fi
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ifconfig ppp0 down
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ifconfig ppp0 delete
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kermit -y /etc/ppp/kermit.noans
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----------------------------
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Following kermit script will enable/disable autoanswer mode
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on your modem:
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-----/etc/ppp/kermit.ans----
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set line /dev/tty01
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set speed 19200
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set file type binary
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set file names literal
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set win 8
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set rec pack 1024
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set send pack 1024
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set block 3
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set term bytesize 8
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set command bytesize 8
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set flow none
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pau 1
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out +++
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inp 5 OK
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out ATH0\13
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inp 5 OK
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echo \13
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out ATS0=1\13 ; change this to out ATS0=0\13 if you want to disable
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; autoanswer mod
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inp 5 OK
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echo \13
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exit
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-----------------------------
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This script is used for dialing and authorizing on remote host.
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You will need to customize it for your needs.
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Put your login and password in this script , also you'll need
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to change input statement depending on responces from your modem
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and remote host.
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-----/etc/ppp/kermit.dial----
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;
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; put the com line attached to the modem here:
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;
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set line /dev/tty01
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;
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; put the modem speed here:
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;
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set speed 19200
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set file type binary ; full 8 bit file xfer
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set file names literal
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set win 8
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set rec pack 1024
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set send pack 1024
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set block 3
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set term bytesize 8
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set command bytesize 8
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set flow none
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set modem hayes
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set dial hangup off
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set carrier auto ; Then SET CARRIER if necessary,
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set dial display on ; Then SET DIAL if necessary,
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set input echo on
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set input timeout proceed
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set input case ignore
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def \%x 0 ; login prompt counter
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goto slhup
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:slcmd ; put the modem in command mode
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echo Put the modem in command mode.
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clear ; Clear unread characters from input buffer
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pause 1
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output +++ ; hayes escape sequence
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input 1 OK\13\10 ; wait for OK
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if success goto slhup
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output \13
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pause 1
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output at\13
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input 1 OK\13\10
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if fail goto slcmd ; if modem doesn't answer OK, try again
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:slhup ; hang up the phone
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clear ; Clear unread characters from input buffer
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pause 1
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echo Hanging up the phone.
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output ath0\13 ; hayes command for on hook
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input 2 OK\13\10
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if fail goto slcmd ; if no OK answer, put modem in command mode
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:sldial ; dial the number
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pause 1
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echo Dialing.
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output atdt9,550311\13\10 ; put phone number here
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assign \%x 0 ; zero the time counter
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:look
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clear ; Clear unread characters from input buffer
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increment \%x ; Count the seconds
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input 1 {CONNECT }
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if success goto sllogin
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reinput 1 {NO CARRIER\13\10}
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if success goto sldial
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reinput 1 {NO DIALTONE\13\10}
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if success goto slnodial
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reinput 1 {\255}
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if success goto slhup
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reinput 1 {\127}
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if success goto slhup
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if < \%x 60 goto look
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else goto slhup
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:sllogin ; login
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assign \%x 0 ; zero the time counter
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pause 1
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echo Looking for login prompt.
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:slloop
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increment \%x ; Count the seconds
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clear ; Clear unread characters from input buffer
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output \13
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;
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; put your expected login prompt here:
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;
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input 1 {Username: }
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if success goto sluid
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reinput 1 {\255}
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if success goto slhup
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reinput 1 {\127}
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if success goto slhup
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if < \%x 10 goto slloop ; try 10 times to get a login prompt
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else goto slhup ; hang up and start again if 10 failures
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:sluid
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;
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; put your userid here:
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;
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output ppp-login\13
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input 1 {Password: }
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;
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; put your password here:
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;
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output ppp-password\13
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input 1 {Entering SLIP mode.}
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echo
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quit
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:slnodial
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echo \7No dialtone. Check the telephone line!\7
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exit 1
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; local variables:
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; mode: csh
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; comment-start: "; "
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; comment-start-skip: "; "
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; end:
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------------------------
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###################################################################
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Gennady B. Sorokopud ( gena@NetVision.net.il ) 24/10/94 12:00
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