ppp-2.3.5 (PPP)

Configure

Check a MODEM connection

# echo at > /dev/ttyS0

/etc/sysconfig/network-scripts/ifcfg-ppp0

PERSIST=yes
DEFROUTE=yes
ONBOOT=no
INITSTRING=ATZ
MODEMPORT=/dev/ttyS0
LINESPEED=115200
ESCAPECHARS=no
DEFABORT=yes
HARDFLOWCTL=yes
DEVICE="ppp0"
PPPOPTIONS=
DEBUG=yes
PAPNAME=
REMIP=
IPADDR=
BOOTPROTO=none
MTU=
MRU=
DISCONNECTTIMEOUT=
RETRYTIMEOUT=0
USERCTL=yes
NETMASK=""

/etc/sysconfig/network-scripts/chat-ppp0

Example
Modem Initial Command	ATZ
Access Point Phone No	100
User Name	hogeuser
Password	hogepassword

'ABORT' 'BUSY'
'ABORT' 'ERROR'
'ABORT' 'NO CARRIER'
'ABORT' 'NO DIALTONE'
'ABORT' 'Invalid Login'
'ABORT' 'Login incorrect'
'' 'ATZ'
'OK' 'ATDT100'
'CONNECT' ''
'Username:' 'hogeuser'
'Password:' 'hogepassword'
'TIMEOUT' '5'
'~--' ''

Notice: Initial command is depend on your modem. If ATZ command can not, tryAT&FX0 or check AT command of your modem.

Change the file permission

# chmod 700 chat-ppp0

How to connect

Make a connection script /root/bin/pppup

#!/bin/sh
cd /etc/sysconfig/network-scripts/
./ifup-ppp ./ifcfg-ppp0

Change file permission

# chmod 700 pppup

Connect

# pppup

How to disconnect

Make a disconnection script /root/bin/pppdown

#!/bin/sh
kill -9 `ps ax | awk '/ppp-watch/ {print $1}'` &> /dev/null
cd /etc/sysconfig/network-scripts
./ifdown-ppp ./ifcfg-ppp0
kill -9 `ps ax | awk '/ppp/ {print $1}'` &> /dev/null

Change file permission

# chmod 700 pppdown

Disconnect

# pppdown

Make a Schedule

Sample Dial Up Time Schedule
0	Sunday
1	Monday	9:00-10:00 14:00-15:00
2	Tuesday	9:00-10:00 14:00-15:00
3	Wednesday	9:00-10:00 14:00-15:00
4	Thursday	9:00-10:00 14:00-15:00
5	Friday	9:00-10:00 14:00-15:00
6	Saturday	9:00-10:00

# crontab -e

# Connect
0 9  * * 1-6 /root/bin/pppup
0 14 * * 1-5 /root/bin/pppup

# Disconnect
0 10 * * *   /root/bin/pppdown
0 15 * * *   /root/bin/pppdown

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