PPPOE- authentication failed.

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Level 1

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PPPOE- authentication failed.

I have Macbook with Mac OS X Version 10.4.8 Where i am trying to connect to the

internet using pppoe Connection.

Background.
We have the Codec Phone line where we have to dial up using the in-built Ethernet card

using the pppoe Connection.

My pppoe Configuration:

I configured the pppoe Connection as follows

1. Location : Bhutan
2. Show: Built-in Ethernet
3. Tcp/IP
Configure IPv4: Using PPP
4. Service provider: Druknet
5.Account name: my account
6. Password: my password
7: pppoe Service name: 100

Problem:

When i connect, it trys to connect and then disconnects saying "Authentication

failed".

Where my username and password is correct.

with this same passord and username i can connect in Windows.

Please Help me.

MacBook2.1, Mac OS X (10.4.8)

Posted on Feb 12, 2007 3:47 AM

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Answer 1

BDAqua

Level 10

250,259 points

Feb 12, 2007 11:17 AM in response to lingpa

I think the problem is in the Username... some require username@drunknet.net, while some just want Username without the @drunknet.net... try the otherway from what you have.

Windows may be figuring it out on it's own.

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Answer 2

Feb 12, 2007 2:04 PM in response to lingpa

with this same passord and username i can connect in

^^^^^^
are you sure you spelled the password corectly? 🙂

Windows.

Just kidding. Couldn't let an opportunity like that pass. 😉

Sometimes ISP's are just set up better for windows. I remember
having trouble with a linux box years ago. I think the problem
was that my pppd was trying to use PAP and the server was set
for CHAP - or vice versa - and the only way I found that out was
by checking the pppd logs. And then I had to set it in verbose
mode.

I usually like to find out what's going on first. PPP has some
protocols it does first: IIRC - link control, ip control. Then it
tries to authenticate you as a user, using either password (PAP)
or challenge (CHAP). It sounds like you got past the first
protocols and failed and the authentication. The only way I
know of to know why is to check the logs. Why don't you find
one and post it here?

-Phil

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Answer 3

lingpa Author

Level 1

0 points

Feb 12, 2007 7:02 PM in response to lingpa

with same username and password i can connect to internet through External Modem.

I can connect with Internal Lan and Air port. Excpet i can not connect through PPPoE using Codec Phone line.

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Answer 4

lingpa Author

Level 1

0 points

Feb 13, 2007 12:10 AM in response to lingpa

Here Is My Connection Log:
Tue Feb 13 12:25:20 2007 : PPPoE connecting to service '100' [access concentrator '']...
Tue Feb 13 12:25:29 2007 : PPPoE connection established.
Tue Feb 13 12:25:29 2007 : Using interface ppp0
Tue Feb 13 12:25:29 2007 : Connect: ppp0 <--> socket[34:16]
Tue Feb 13 12:26:00 2007 : No response to PAP authenticate-requests
Tue Feb 13 12:26:06 2007 : Connection terminated.
Tue Feb 13 12:26:06 2007 : PPPoE disconnecting...
Tue Feb 13 12:26:06 2007 : PPPoE disconnected
Tue Feb 13 12:26:15 2007 : PPPoE connecting to service '100' [access concentrator '']...
Tue Feb 13 12:26:27 2007 : PPPoE connection established.
Tue Feb 13 12:26:27 2007 : Using interface ppp0
Tue Feb 13 12:26:27 2007 : Connect: ppp0 <--> socket[34:16]
Tue Feb 13 12:26:58 2007 : No response to PAP authenticate-requests
Tue Feb 13 12:27:04 2007 : Connection terminated.
Tue Feb 13 12:27:04 2007 : PPPoE disconnecting...
Tue Feb 13 12:27:04 2007 : PPPoE disconnected

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Answer 5

Feb 13, 2007 8:12 AM in response to lingpa

Here Is My Connection Log:
Tue Feb 13 12:25:20 2007 : PPPoE connecting to
service '100' [access concentrator '']...
Tue Feb 13 12:25:29 2007 : PPPoE connection
established.
Tue Feb 13 12:25:29 2007 : Using interface ppp0
Tue Feb 13 12:25:29 2007 : Connect: ppp0 <-->
socket[34:16]
Tue Feb 13 12:26:00 2007 : No response to PAP
authenticate-requests

Bingo! Odds are that your ISP is using CHAP. Now to get your
machine to...

Okay, this is where the Mac/Unix boundary gets fuzzy for me.
I think the place to start is the utility called "Internet Connect".
Clicking the VPN button gets me started on a dialog which
starts talking the right language, but no direct setting. It's
possible that just having something set up will force Mac OS
to use CHAP. Give that a try first.

-Phil

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Answer 6

Feb 13, 2007 11:11 AM in response to philsmith_

One more thought, the other thing I would try would be to
edit/create the file /etc/ppp/options and add the line:

require-chap

I can't guarantee that the pppd that OSX uses will read that
file, but I have a feeling it's just BSD and that ought to work.

-Phil

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Answer 7

lingpa Author

Level 1

0 points

Feb 14, 2007 7:39 PM in response to philsmith_

I Visited my ISP and found their are using CHAP and Mac OS X is using PAP.
Since i am New to the Mac OS X please can you guide me how to edit or create the file /etc/ppp/options and add the line:

require-chap
I will give a try.Please help me.

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Answer 8

Feb 15, 2007 9:34 AM in response to lingpa

In the Terminal app (Applications->Utilities->Terminal)
open a window, enter:

sudo vi /etc/ppp/options
(enter su password)
when the vi window comes up enter:

arequire-chap:wq

exit Terminal, you're done.

-Phil

P.S. While this is what I came up with, and it's clear it's
an authentication protocol problem, I'm still a little wary
because I thought all modern pppd's used CHAP by
default. It may well be that you have a require-pap line
in there already. If that's true, please post the entire
file and we'll tell you what to do.

Powerbook G4, iMac (Intel), and tons of hardware sitting in the closet Mac OS X (10.4.8)

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Answer 9

lingpa Author

Level 1

0 points

Feb 20, 2007 7:42 AM in response to philsmith_

I tried to insert the new code which you asked me to do.

Since i am new to MAC and the Apple. Please can you give me a full steps where by i can make changes. I am Still not able to connect to ISP Via PPPoE.

If you have a URL Please post it here where by i can learn how to change the PAP to CHAP Configuration in my MACbook.

Regards.

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Answer 10

Feb 20, 2007 11:40 AM in response to lingpa

I tried to insert the new code which you asked me to
do.

I'm sorry, sometimes I forget that not everyone know how to
use vi. Does /etc/ppp/options already exist on your MacBook?
In Ternminal, enter "ls /etc/ppp/options". If it doesn't exist,
enter "sudo touch /etc/ppp/options". To make it writable enter
"sudo chmod 666 /etc/ppp/options". Then enter

echo "require-chap" >> /etc/ppp/options

That should do it.

If you have a URL Please post it here where by i can
learn how to change the PAP to CHAP Configuration in
my MACbook.

I can't find anything. I'm assuming because it's unix under the
hood that the above solution will work.

-Phil

Powerbook G4, iMac (Intel), and tons of hardware sitting in the closet Mac OS X (10.4.8)

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