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Old 09-19-2005, 09:00 AM   #1
LQ Newbie
Registered: Feb 2005
Distribution: RHEL4, SLED10, Ubuntu, Solaris
Posts: 26

Rep: Reputation: 15
VPN with PPTP and MPPE

Hi, I am having problems getting this to work on Ubuntu. I have installed pptp-linux, pptpconfig and setup the VPN connection with the settings provided to me by the network administrator. I have also setup a proxy configuration in firefox for the connection.

When I start the VPN tunnel everything seems to work, there are no error messages reported. When I try to go to a website the status message changes from 'looking up' to 'connecting to' but then it just times out. When I use wget to fetch google it prints the IP address of Google so the DNS is working correctly but I'm not receiving anything.

I had a similar problem in Windows setting up this VPN as I have a software firewall which I had to setup to allow traffic to/from the VPN. I figured that this is probably what is wrong on Ubuntu so I added the VPN address to my /etc/hosts.allow and still no dice.

If someone could help me with this I'd be grateful,

Old 09-20-2005, 11:53 AM   #2
LQ Newbie
Registered: Feb 2005
Distribution: RHEL4, SLED10, Ubuntu, Solaris
Posts: 26

Original Poster
Rep: Reputation: 15
I have spoken to some guys at technical support and they said that it sounds like a proxy problem and that I should check my proxy settings.

Could someone tell me where I should look to to setup a proxy?


I have tried using:

export http_proxy=myproxyaddress:port
and that isn't working.

Last edited by Markup; 09-21-2005 at 04:21 AM.
Old 09-30-2005, 11:36 AM   #3
LQ Newbie
Registered: Feb 2005
Distribution: RHEL4, SLED10, Ubuntu, Solaris
Posts: 26

Original Poster
Rep: Reputation: 15
MPPE MS-CHAP Authentication

OK this time I setup the PPTP configuration manually, but when I dial in using pon (with debugging options) I receive:

MPPE required, but MS-CHAP[v2] auth not performed.
sent [LCP TermReq id=0x2 "MPPE required but not available"]
rcvd [LCP TermReq id=0x3 "peer refused to authenticate"]
Connection terminated.
My /etc/ppp/chap-secrets file has my login details all setup and I have quoted and unquoted my password just incase that was a problem, why is it not performing the MS-CHAP authentication? lsmod shows that ppp_mppe is loaded.

Old 10-16-2006, 07:59 PM   #4
Registered: Apr 2004
Location: Costa Rica
Distribution: slack current with (still off the hook)
Posts: 284

Rep: Reputation: 33
I have the same problem and I'm trying to connect directly so is not a proxy setting.
And I have no problem with my windows clients.


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