This is a brief version of the file ./ppp-linux.html--How to Hook up PPP in Linux .
This file includes no explanations and is terse. If anythig confuses
you read the original longer file. It is the longer file which is more
definitive.
Note that all of the steps are necessary. There are quite few of
them, but skipping steps will probably lead you to grief.
In /etc/syslog.conf
local2.* /var/log/ppp
daemon.* /var/log/ppp
Run
killall -1 syslogd
In /etc/resolv.conf
nameserver <DNS-IPaddress>
In /etc/host.conf
order hosts,bind
Run
chmod a+r /etc/host.conf /etc/resolv.conf
Run
route -n
If default route (0.0.0.0 as first item), then run
route del default
and Remove reason for this default route being there.
or put that command into /etc/rc.local or /etc/rc.d/rc.local
Run
ps aux|grep kerneld|grep -v grep
If no output (kerneld not running) run
/sbin/kerneld
and make sure that kerneld is started up at boot time.
Run
/usr/sbin/pppd
If long line of garbage which repeats itself about 10 times
Go to next paragraph!
if permission denied
You are not running as root!
if error- ppp may not be in kernel
Probably kerneld is not running-- fix
Edit /etc/ppp/options and insert the lines
lock
debug
crtscts
defaultroute
Run (all one line)
/usr/sbin/pppd /dev/ttyS1 57600 connect " /usr/sbin/chat -v '' AT OK ATD5555555 CONNECT '\d\c'"
5555555=your ISP's phone number.
/dev/ttyS1=your modem serial port (ttyS0=COM1,...ttyS3=COM4)
Also note difference between a single double quote ", and two
successive apostrophes ''.
Look at /var/log/ppp (in tail -f window or by
less /var/log/ppp
If pppd starts to run and gives Problem: all had bit 7 set to 0
Go to Login Authorisation?
If one of lines had <auth pap> or <auth chap #>
Go to PAP/CHAP
In /var/log/ppp
If Login:, Password: accepted
If pppd started negotiation
if Connection made and addresses returned
Success--Go to Test
if <auth pap> or <auth chap #> occur
Go To PAP/CHAP
else
Trouble. Ask in Linux or PPP newsgroups
Else
Go to Start PPP
Else Login: or password not accepted
If Login: and Password: occur and your name and password are sent
Check your login name or password with your ISP
Else If Login: or Password: not asked for
Check what is asked for and insert into above command instead of ogin and assword
Start ppp
Run
/usr/sbin/pppd /dev/ttyS1 57600 connect "/usr/sbin/chat -v '' ATD5555555 CONNECT '' ogin <yourusername> assword <yourpassword> ppp y"
Check /var/log/ppp.
If Successful LCP exchange
Go up to previous lines.
Else
If other text ( eg run pppd or PPP? type y) received from remote machine
Alter ppp y to reflect what is actually wanted and try again.
Else Ask in newsgroups or your ISP.
If <auth chap #> where # is a number
If #= 05 or md5--you're OK
Else if #=80 or 81
Microsoft Chap. If 80 and pppd rejected it (ConfRej), recompile pppd with MSCHAP
if 81, complain to ISP about non-standard chap
edit /etc/ppp/chap-secrets
<username> * <password> *
Try again whichever chat script got you here.
If Success
Go to Test
Else
if peer authorisation failure
Check username and password with ISP
else other error
Ask in Newsgroup
Run
ping <remoteIP>
If succession of responses-- Success connection working
Else May still be OK, but worry.
Run
ping <DNS-IPaddress>
if succession of responses -- Success Connection working
Else if Network not found-- problems-- check number with ISP
Run
ping www.theory.physics.ubc.ca
If succession of responses -- Sucess Name resolver working
Else Name Resolver problems-- check with ISP
Or, www.theory.physics.ubc.ca
has problems-- try other internet names.
Run
chmod a+rx /usr/sbin/pppd
chmod +s /usr/sbin/pppd
edit /usr/bin/pppon
============================
#!/bin/sh
if [ "$1" = "" ]; then
echo Useage: pppon username
exit 1
fi
pppd /dev/ttyS# 57600 user $1 connect "chat -f $HOME/chatscript"
_____________________________
chmod a+rx /usr/sbin/pppon
edit $HOME/chatscript
==============================
ABORT "NO CARRIER"
ABORT "NO DIALTONE"
ABORT "ERROR"
ABORT "NO ANSWER"
ABORT "BUSY"
"" AT
OK-\d\d+++\d\d\c-OK ATH0
OK 'AT&F'
# and whatever other modem initialisation is needed (some need AT&F0 instead.
OK ATD8765432
CONNECT '\c\d'
#At this point (after CONNECT) the various chat scipts diverge.
#You must enter the expect send pairs which were successful for
you
#This example is an example of login authorisation.
ogin:--ogin: wunruh
assword: Dontyouwish
_______________________________________________
To stop the connection
killall pppd