[lug] pppd and wvdial troubles

Mon Mar 19 08:55:06 MST 2001

All you have to do is configure the PPP interface. In the options field of
Linuxconf type:

demand idle 600

Mark the interface as activate on boot. Run ifup ppp0

You're done.

That's all.

George Sexton
MH Software, Inc.
Voice: 303 438 9585
http://www.mhsoftware.com

-----Original Message-----
From: lug-admin at lug.boulder.co.us [mailto:lug-admin at lug.boulder.co.us]On
Behalf Of Mark (Andy) Jolley
Sent: 18 March, 2001 11:37 AM
To: lug at lug.boulder.co.us
Subject: [lug] pppd and wvdial troubles

I'm trying to get my Red Hat 7.0 to dial on demand, and I'm having trouble
with the first couple of steps.  My overall goal is to setup ipchains and
masq and create a "auto dial router/firewall" kind deal.

Please keep in mind that I'm a Linux newbie, be gentle.  But I'm a geek, I'm
familiar with routers, firewalls, and dare I say it, NT4.0 server.  (I
manage all of the above at work).  I have taken some UNIX classes, but that
information is sketchy at best.

I have successfully setup wvdial, and can connect using 'wvdial qwest' every
time(my configs are below)

but if I try /usr/sbin/pppd file /etc/ppp/options connect 'wvdial --chat
qwest'  I get a hangup as soon as I connect and authenticate.  I'm wondering
where the SIGHUP is coming from, and why, I'm not calling it.

My understanding of how wvdial works as a chat replacement is as follows:
pppd initializes the modem, calls wvdial for the dialup information, and
wvdial negotiates the ppp connection and authenticates.

I have tried just using the standard chat method /etc/ppp/options connect
'usr/sbin/chat -v -f /etc/ppp/qwest' and had the identical problem, my
/var/log/messages looks pretty much the same, but with more output from
chat.  But it all goes swimmingly until after I'm authenticated.

Now for the really annoying part, I've had either one of the above work
about 1/15 or so times, so I'm really banging my head against the wall.

Here's the conf's and error stuff I have replace my userid with UUUUUUU and
my password with PPPPPP for obvious reasons.  My pap-secrets and
chap-secrets are ok.

And yes I know connecting to the internet as root is a bad thing...but I'm
debugging now.

--------/ETC/WVDIAL.CONF
[Modem0]
Modem = /dev/ttyS0
Baud = 115200
Init1 = ATZ
Init2 = ATQ0 V1 E1 S0=0 &C1 &D2 S11=55 +FCLASS=0

[Dialer Defaults]
Modem = /dev/ttyS0
Baud = 115200
Init1 = ATZ
Init2 = ATQ0 V1 E1 S0=0 &C1 &D2 S11=55 +FCLASS=0
New PPPD = 1

[Dialer qwest]
Username = UUUUUUUUU
Password = PPPPPPPPP
Phone = 2541619
Area Code = 303
Inherits = Dialer Defaults
Stupid mode = 0

------/ETC/PPP/OPTIONS
lock
/dev/ttyS0
115200
crtscts
modem
noipdefault
defaultroute
idle 120
noauth
debug

------/ETC/PPP/PEERS/WVDIAL (according to my man pages for wvdial, my
version of pppd requries this file, these are default entries from Red Hat,
couldn't find docs on what it means)

noauth
name wvdial

-------/ETC/PPP/QWEST (my chat script if I use the standard method of chat
instead of wvdial)
"" atdt3032541619 CONNECT "" Username :UUUUUU sword: PPPPPPP

-------/var/log/messages snippet of when I run /usr/sbin/pppd file
/etc/ppp/options connect 'wvdial --chat qwest'
Mar 18 10:32:30 localhost pppd[1135]: pppd 2.3.11 started by root, uid 0
Mar 18 10:32:31 localhost WvDial: WvDial: Internet dialer version 1.41
Mar 18 10:32:31 localhost WvDial: Initializing modem.
Mar 18 10:32:31 localhost WvDial: Sending: ATZ
Mar 18 10:32:32 localhost WvDial: ATZ
Mar 18 10:32:32 localhost WvDial: OK
Mar 18 10:32:32 localhost WvDial: Sending: ATQ0 V1 E1 S0=0 &C1 &D2 S11=55
+FCLAS
S=0
Mar 18 10:32:32 localhost WvDial: ATQ0 V1 E1 S0=0 &C1 &D2 S11=55 +FCLASS=0
Mar 18 10:32:32 localhost WvDial: OK
Mar 18 10:32:32 localhost WvDial: Modem initialized.
Mar 18 10:32:32 localhost WvDial: Sending: ATDT 3032541619
Mar 18 10:32:32 localhost WvDial: Waiting for carrier.
Mar 18 10:32:32 localhost WvDial: ATDT 3032541619
Mar 18 10:32:59 localhost WvDial: CONNECT 115200
Mar 18 10:32:59 localhost WvDial: Carrier detected.  Waiting for prompt.
Mar 18 10:32:59 localhost WvDial: User Access Verification
Mar 18 10:32:59 localhost WvDial: Username:
Mar 18 10:32:59 localhost WvDial: Looks like a login prompt.
Mar 18 10:32:59 localhost WvDial: Sending: UUUUUU
 Mar 18 10:32:59 localhost WvDial: UUUUUU
Mar 18 10:32:59 localhost WvDial: Password:
Mar 18 10:32:59 localhost WvDial: Looks like a password prompt.
Mar 18 10:32:59 localhost WvDial: Sending: (password)
Mar 18 10:33:00 localhost WvDial: Entering PPP mode.
Mar 18 10:33:00 localhost WvDial: Async interface address is unnumbered
(Loopbac
k1)
Mar 18 10:33:00 localhost WvDial: Your IP address is 207.225.104.93. MTU is
1500
 bytes
Mar 18 10:33:00 localhost WvDial: Looks like a welcome message.
Mar 18 10:33:00 localhost pppd[1135]: Serial connection established.
Mar 18 10:33:00 localhost pppd[1135]: Using interface ppp0
Mar 18 10:33:00 localhost pppd[1135]: Connect: ppp0 <--> /dev/ttyS0
Mar 18 10:33:02 localhost pppd[1135]: Hangup (SIGHUP)
Mar 18 10:33:02 localhost pppd[1135]: Modem hangup
Mar 18 10:33:02 localhost pppd[1135]: Connection terminated.
Mar 18 10:33:03 localhost pppd[1135]: Exit.

TIA
Mark (Andy) Jolley

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