VPN with PPTP and MPPE

Markup · 09-19-2005, 08:00 AM

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 www.whatever.com' to 'connecting to www.whatever.com' 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,

Thanks.

Markup · 09-20-2005, 10:53 AM

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?

:confused:

I have tried using:

Code:

export http_proxy=myproxyaddress:port

and that isn't working.

Markup · 09-30-2005, 10:36 AM

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

Code:

...
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.

???

mago · 10-16-2006, 06:59 PM

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.