Connect to Windows VPN Server (pptp) with Ubuntu Hardy Heron

Date April 29, 2008

Ubuntu Hardy Heron 8.04 came out last week, and I thought I’d take a moment to do a new post about connecting to a workplace VPN that uses Windows Server’s built in PPTP ability.  Not a lot has changed, so you can also refer to the older article here.

The process is simple, but oftentimes discovering the necessary steps is the hard part.

Install PPTP plugin for Network Manager

  1. Open Add/Remove from the Applications menu
  2. Select All available applications from the show dropdown menu
  3. Enter pptp in the search box
  4. Select VPN Connection Manager
  5. Apply Changes to install.

Reboot or Restart the dbus Service

Next, you can either reboot your machine or restart the dbus service and log out and back in.  If you’d rather not reboot, follow these instructions:

  1. Open a terminal and restart the dbus service with: sudo /etc/init.d/dbus restart
  2. Log out of GNOME, or hit control-alt-backspace
  3. Log back in

VPN Setup

Entering the details of your VPN is relatively straightforward, with one caveat and a few advanced options.

  1. Click on the Network Manager applet in your system tray, and select VPN Connections > Configure VPN…
  2. Click Add and follow the wizard to begin configuration.  Enter a name for the connection, and the address of the VPN server.
  3. IMPORTANT – Switch to the Authentication tab and select Refuse CHAP.  This is necessary to connect to a server using the default configuration of the Microsoft PPTP VPN service.

If you have special requirements, or prefer not to tunnel all your traffic through the company VPN while connected, you can specify some advanced options that allow you to customize the connection

  • DNS – Deselect Use Peer DNS under the PPP Options tab and Peer DNS through tunnel under the Routing tab if you’d prefer to use your local DNS server for queries.
  • Routing – Select Only use VPN connection for these addresses if you know the address or subnet of the machine you’d like to connect to.  This is specified using slash (or CIDR) notation.  For example, if your workplace network uses addresses on the 10.10.1.0 network, you would specifiy 10.10.1.0/24 to only route those addresses over the VPN.

Connect!

All that’s left now is to connect.  Click the Network Manager applet once more, and select the profile you defined in the last step from VPN Connections.  Enter your credentials in the authentication screen that pops up, and wait for it to connect.  Once connected, Network Manager will display a lock on your connection, signifying that your secure tunnel is in place.

Kubuntu PPTP VPN

Unfortunately, there is a standing bug in KNetworkManager (network-manager-kde) that prevents configuration of the PPTP client with the error message:

There is no configuration interface for the VPN service ppp installed. Please check your installation.

However, if it has been configured via the Gnome NetworkManager plugin, you are still able to connect.

  1. Right click the KNetworkManager icon in the tray
  2. Select VPN Connections > Connect to Your Network and go.

After connecting with KNetworkManager, you are able to browse shares with Konqueror and access any other services on the remote network normally.

Category Posted in backtrack, blog entries

41 Responses to “Connect to Windows VPN Server (pptp) with Ubuntu Hardy Heron”

  1. Connect to Windows VPN server (PPTP) with Ubuntu Gutsy | Tip o’ the Day said:

    April 29th, 2008 at 11:39 pm

    [...] UPDATE – for VPN on Hardy Heron, see my new post here [...]

  2. lefty.crupps said:

    April 30th, 2008 at 7:41 am

    I’d love to see how this is done in KDE, especially with Debian Testing or even Kubuntu 8.04. I’ve been able to get the VPN to *say* that it is connected, but I’ve never been able to work with it.

  3. ya ya said:

    May 1st, 2008 at 2:30 am

    Your guide gets it saying that it connects, but it seems like it’s on a timer to disconnect if it doesn’t get any action, as about ten seconds later, the spiffy flying lock icon disappears, as does the VPN connection. I’m never able to connect to the windows network through places before the connection has been lost, and the only way to try again is to logout/restart. this sucks. Any ideas?

  4. gopo said:

    May 1st, 2008 at 7:37 am

    Well, I did exactly as above, but all I’m getting is this message:
    Could not start the VPN connection ‘Sdu’ due to a connection error.
    VPN Connection failed!

    Any ideas?

  5. mshade said:

    May 1st, 2008 at 7:57 am

    Ya Ya, I’m not sure what that issue could be. My VPN stays connected without an issue. I’ll poke around and update the post if I find anything.

    Gopo, check your firewall/router’s settings — you may need to activate VPN pass-through in a menu option in its admin interface.

    Both of you should check the output of /var/log/debug and /var/log/messages when you connect to the VPN — NetworkManager sends its console output there so that is a good place to start.

  6. gopo said:

    May 1st, 2008 at 12:39 pm

    Firts off, I think I forgot to say thank you, for the post and for trying to help. It’s something we are not very good at. So, thank you very much.

    I can connect to vpn from a windows with no problems, so I don’t think it’s the router.

    As about the logs. In the debug, nothing, but in messages, I get this:
    May 1 19:34:44 gopo-desktop pppd[6332]: Plugin nm-pppd-plugin.so loaded.
    May 1 19:34:44 gopo-desktop pppd[6332]: nm-pppd-plugin: plugin initialized.
    May 1 19:34:44 gopo-desktop pppd[6334]: pppd 2.4.4 started by root, uid 0
    May 1 19:34:44 gopo-desktop pppd[6334]: Using interface ppp0
    May 1 19:34:44 gopo-desktop pppd[6334]: Connect: ppp0 /dev/pts/0
    May 1 19:34:45 gopo-desktop pppd[6334]: nm-pppd-plugin: CHAP check hook.
    May 1 19:34:55 gopo-desktop pppd[6334]: Terminating on signal 15
    May 1 19:34:55 gopo-desktop pppd[6334]: Child process /usr/sbin/pptp 130.225.231.66 –nolaunchpppd (pid 6335) terminated with signal 15
    May 1 19:34:55 gopo-desktop pppd[6334]: Modem hangup
    May 1 19:34:55 gopo-desktop pppd[6334]: Connection terminated.
    May 1 19:34:56 gopo-desktop pppd[6334]: Exit.

  7. mshade said:

    May 1st, 2008 at 12:43 pm

    Gopo, no problem.

    Here are what my logs look like:


    May 1 08:51:43 gobot pppd[22258]: Plugin nm-pppd-plugin.so loaded.
    May 1 08:51:43 gobot pppd[22258]: nm-pppd-plugin: plugin initialized.
    May 1 08:51:43 gobot pppd[22259]: pppd 2.4.4 started by root, uid 0
    May 1 08:51:43 gobot pppd[22259]: Using interface ppp0
    May 1 08:51:43 gobot pppd[22259]: Connect: ppp0 < --> /dev/pts/2
    May 1 08:51:44 gobot pppd[22259]: nm-pppd-plugin: CHAP check hook.
    May 1 08:51:45 gobot pppd[22259]: nm-pppd-plugin: CHAP credentials requested.
    May 1 08:51:45 gobot pppd[22259]: CHAP authentication succeeded
    May 1 08:51:47 gobot pppd[22259]: MPPE 128-bit stateless compression enabled
    May 1 08:51:48 gobot pppd[22259]: local IP address 192.168.11.62
    May 1 08:51:48 gobot pppd[22259]: remote IP address 192.168.11.58
    May 1 09:09:54 gobot pppd[22259]: Terminating on signal 15
    May 1 09:09:54 gobot pppd[22259]: Connect time 18.1 minutes.
    May 1 09:09:54 gobot pppd[22259]: Sent 3316 bytes, received 2900 bytes.
    May 1 09:09:54 gobot pppd[22259]: Child process /usr/sbin/pptp 67.153.108.10 --nolaunchpppd (pid 22261) terminated with signal 15
    May 1 09:09:54 gobot pppd[22259]: Modem hangup
    May 1 09:09:54 gobot pppd[22259]: Connection terminated.
    May 1 09:09:54 gobot pppd[22259]: Exit.

    I see that the Credentials never get requested and you don’t authenticate… Are you sure you checked the ‘Refuse CHAP’ option in the config? You want to leave ‘Refuse MS CHAP’ unchecked — that’s the default method used to connect to MS VPNs.

  8. gopo said:

    May 1st, 2008 at 2:13 pm

    .Refuse EAP and CHAP are both checked. I’ve tried to “play” a bit with those settings, but the result is the same. I think I’ll have to wait for 9.04 to be able to get connected to a ms vpn. And this is a show-stopper, as I need to connect. Oh…

  9. Dave said:

    May 8th, 2008 at 1:20 am

    Logging out is super lame, just do this:

    sudo /etc/dbus-1/event.d/25NetworkManager restart
    sudo /etc/dbus-1/event.d/26NetworkManagerDispatcher restart

  10. hab said:

    June 11th, 2008 at 7:59 am

    Hi!
    Ich have exactly the same problem as gopo, and the same output in /var/log/messages.

    Please help!

  11. Chuck said:

    June 18th, 2008 at 3:38 pm

    I just upgraded to 8.04 running XFCE under Xubuntu. The network manager doesn’t give me an option for VPN connections. Is there something I am missing?

    I am relatively new to linux, so I would appreciate any help in sorting this out.

  12. Dave from Albury said:

    June 23rd, 2008 at 7:16 pm

    I’m having a similar problem to you Chuck, although I’m running 8.04 Ubuntu with Gnome.

  13. entplex said:

    June 25th, 2008 at 1:08 am

    Me as well… was something changed with the network manager recently?.. I’m fairly familiar w/ ubuntu and I’m not finding it anywhere, maybe I”l just not have to be lazy and do it through the term. On the other hand it would be nice to get the gui working for this as I know many people rely on the gui if they aren’t familiar to linux, especially ms centric folks who might be using such a type of vpn.

  14. entplex said:

    June 25th, 2008 at 1:10 am

    oh yeah… I’m running plain old Ubuntu Hardy 8.04 Desktop…

  15. Rob said:

    June 29th, 2008 at 3:57 pm

    I got it working in Ubuntu 7.10 Gnome. It is very important to find out what type of VPN you use. XP uses chap version 1, Vista can’t use that version and uses chap v2. I do not know if Ubuntu can handle version 2.

    In windows XP sp2 I connected to Cisco Pix with it’s standard VPN, this did not work with Vista, where the Cisco software was needed (and change in Pix). Ubuntu network manager VPN still works for me in Ubuntu 8.04. My settings:
    - Switch to the Authentication tab and select only “Refuse CHAP” and “Refuse EAP”.
    - Switch to the Compression & encryption tab and select “only Require 128bit MPPC encryption” and Enable “statefull MPPE”.
    - Switch to the PPP options tab and select “Use peer DNS” and “Exclusive device access”

    Maybe are not all settings needed but it works for me. :-)

    Hope my reseach to get it work helps for at least some of you…

  16. ramon said:

    July 1st, 2008 at 6:56 pm

    hello!
    I am trying to connect remotely from home to my computer in my work network but there is no way to make the Terminal Server Client to connect to my work’s computer. To connect to my work network we use a VPN and a RSA Securid token. I can log in. But after that, when I try to reach the Desktop of my computer using Terminal Server Client, or Rdesktop It says connection refused. I use Ubuntu Hardy at home and Windows XP Pro at work. Any help on that?

  17. jeramy said:

    July 3rd, 2008 at 8:01 pm

    I can’t even get that far. BTW, it connects just great in Windows.

    Here’s my results from /var/log/messages:

    Jul 3 20:57:18 jester pppd[8764]: Plugin nm-pppd-plugin.so loaded.
    Jul 3 20:57:18 jester pppd[8764]: nm-pppd-plugin: plugin initialized.
    Jul 3 20:57:18 jester pppd[8765]: pppd 2.4.4 started by root, uid 0
    Jul 3 20:57:18 jester pppd[8765]: Using interface ppp0
    Jul 3 20:57:18 jester pppd[8765]: Connect: ppp0 /dev/pts/1
    Jul 3 20:57:19 jester pppd[8765]: nm-pppd-plugin: CHAP check hook.
    Jul 3 20:57:29 jester pppd[8765]: Terminating on signal 15
    Jul 3 20:57:29 jester pppd[8765]: Child process /usr/sbin/pptp 142.46.199.66 –nolaunchpppd (pid 8766) terminated with signal 15
    Jul 3 20:57:29 jester pppd[8765]: Modem hangup
    Jul 3 20:57:29 jester pppd[8765]: Connection terminated.
    Jul 3 20:57:29 jester pppd[8765]: Exit.

    If I get desperate, I’ll be sniffing the packets with Wireshark to see the difference between the Windows connection and the Ubuntu one.

  18. Cronaca di un’avventura formativa » links for 2008-07-07 said:

    July 7th, 2008 at 3:33 am

    [...] Connect to Windows VPN Server (pptp) with Ubuntu Hardy Heron | Tip o’ the Day (tags: vpn linux ubuntu) [...]

  19. Karl Rudnick said:

    July 11th, 2008 at 2:03 am

    This is great info. I followed all the advice and I still cannot connect to a Windows PPTP VPN (I have both a 32-bit and 64-bit ubuntu 8.04 install on 2 comnputers). My /var/log/messages reads:

    Jul 10 23:54:37 hplaptop pppd[6785]: Plugin nm-pppd-plugin.so loaded.
    Jul 10 23:54:37 hplaptop pppd[6785]: nm-pppd-plugin: plugin initialized.
    Jul 10 23:54:37 hplaptop pppd[6786]: pppd 2.4.4 started by root, uid 0
    Jul 10 23:54:37 hplaptop pppd[6786]: Using interface ppp0
    Jul 10 23:54:37 hplaptop pppd[6786]: Connect: ppp0 /dev/pts/1
    Jul 10 23:54:38 hplaptop pppd[6786]: nm-pppd-plugin: CHAP check hook.
    Jul 10 23:54:38 hplaptop pppd[6786]: nm-pppd-plugin: CHAP credentials requested.
    Jul 10 23:54:38 hplaptop pppd[6786]: Connection terminated.
    Jul 10 23:54:38 hplaptop pppd[6786]: Exit.

  20. Karl Rudnick said:

    July 12th, 2008 at 12:59 am

    I got this to work. Keys were syntax for specifying domain and username: DOMAIN\username
    The authentication settings which worked for me are:
    1. UNCHECK Authenticate peer
    2. CHECK Refuse EAP
    3. CHECK Refuse CHAP
    4. CHECK Refuse MSCHAP
    (I concludied this is a vpn-pptp connection using MSCHAPv2)

    fwiw, my /var/log/syslog reads:
    Jul 11 22:25:47 hplaptop pppd[29125]: Plugin nm-pppd-plugin.so loaded.
    Jul 11 22:25:47 hplaptop pppd[29125]: nm-pppd-plugin: plugin initialized.
    Jul 11 22:25:47 hplaptop pppd[29126]: pppd 2.4.4 started by root, uid 0
    Jul 11 22:25:47 hplaptop pptp[29128]: anon log[main:pptp.c:267]: The synchronous pptp option is NOT activated
    Jul 11 22:25:47 hplaptop pppd[29126]: Using interface ppp0
    Jul 11 22:25:47 hplaptop NetworkManager: VPN Activation (ibis) Stage 3 of 4 (Connect) reply received.
    Jul 11 22:25:47 hplaptop NetworkManager: VPN Activation (ibis) Stage 4 of 4 (IP Config Get) timeout scheduled…
    Jul 11 22:25:47 hplaptop NetworkManager: VPN Activation (ibis) Stage 3 of 4 (Connect) complete, waiting for IP configuration…
    Jul 11 22:25:47 hplaptop pppd[29126]: Connect: ppp0 /dev/pts/1
    Jul 11 22:25:47 hplaptop pptp[29132]: anon log[ctrlp_rep:pptp_ctrl.c:251]: Sent control packet type is 1 ‘Start-Control-Connection-Request’
    Jul 11 22:25:48 hplaptop pptp[29132]: anon log[ctrlp_disp:pptp_ctrl.c:738]: Received Start Control Connection Reply
    Jul 11 22:25:48 hplaptop pptp[29132]: anon log[ctrlp_disp:pptp_ctrl.c:772]: Client connection established.
    Jul 11 22:25:48 hplaptop pppd[29126]: nm-pppd-plugin: CHAP check hook.
    Jul 11 22:25:48 hplaptop pptp[29132]: anon log[ctrlp_rep:pptp_ctrl.c:251]: Sent control packet type is 7 ‘Outgoing-Call-Request’
    Jul 11 22:25:49 hplaptop pptp[29132]: anon log[ctrlp_disp:pptp_ctrl.c:857]: Received Outgoing Call Reply.
    Jul 11 22:25:49 hplaptop pptp[29132]: anon log[ctrlp_disp:pptp_ctrl.c:896]: Outgoing call established (call ID 0, peer’s call ID 25942).
    Jul 11 22:25:49 hplaptop pptp[29132]: anon log[ctrlp_disp:pptp_ctrl.c:949]: PPTP_SET_LINK_INFO received from peer_callid 0
    Jul 11 22:25:49 hplaptop pptp[29132]: anon log[ctrlp_disp:pptp_ctrl.c:952]: send_accm is 00000000, recv_accm is FFFFFFFF
    Jul 11 22:25:49 hplaptop pptp[29132]: anon warn[ctrlp_disp:pptp_ctrl.c:955]: Non-zero Async Control Character Maps are not supported!
    Jul 11 22:25:49 hplaptop pppd[29126]: nm-pppd-plugin: CHAP credentials requested.
    Jul 11 22:25:49 hplaptop pppd[29126]: CHAP authentication succeeded
    Jul 11 22:25:50 hplaptop kernel: [25045.580471] padlock: VIA PadLock Hash Engine not detected.
    Jul 11 22:25:50 hplaptop modprobe: WARNING: Error inserting padlock_sha (/lib/modules/2.6.24-19-generic/kernel/drivers/crypto/padlock-sha.ko): No such device
    Jul 11 22:25:50 hplaptop kernel: [25045.597435] PPP MPPE Compression module registered
    Jul 11 22:25:50 hplaptop pppd[29126]: MPPE 128-bit stateless compression enabled
    Jul 11 22:25:51 hplaptop pppd[29126]: Cannot determine ethernet address for proxy ARP
    Jul 11 22:25:51 hplaptop pppd[29126]: local IP address 10.1.19.10
    Jul 11 22:25:51 hplaptop pppd[29126]: remote IP address 10.1.19.1
    Jul 11 22:25:51 hplaptop pppd[29126]: primary DNS address 10.1.1.180
    Jul 11 22:25:51 hplaptop pppd[29126]: secondary DNS address 10.1.1.181
    Jul 11 22:25:51 hplaptop NetworkManager: VPN Activation (ibis) Stage 4 of 4 (IP Config Get) reply received.
    Jul 11 22:25:52 hplaptop NetworkManager: Clearing nscd hosts cache.
    Jul 11 22:25:52 hplaptop NetworkManager: nm_spawn_process(): nm_spawn_process(‘/usr/sbin/nscd -i hosts’): could not spawn process. (Failed to execute child process “/usr/sbin/nscd” (No such file or directory))
    Jul 11 22:25:52 hplaptop NetworkManager: VPN Activation (ibis) Stage 4 of 4 (IP Config Get) complete.
    Jul 11 22:25:52 hplaptop NetworkManager: VPN Activation (ibis) successful.
    J

  21. Connect to Windows VPN Server with Ubuntu 8.04 Hardy Heron said:

    July 12th, 2008 at 9:43 am

    [...] I have never managed to connect successfully to Windows VPN server.  Recently I stumbled across this article they outlines the all important options to select.  Check it out, it [...]

  22. karlos said:

    July 12th, 2008 at 5:03 pm

    A few of the comments above indicate they cannot even see the VPN Connections line when they click on an their Network Manager icon (upper right toolbar). Note that ubuntu (7.10 and 8.04) enables vpn with plug-ins which are not installed by the default install. So, use apt-get or synaptic to install these packages (dependent packages will also be installed):
    network-manager-pptp
    network-manager-openvpn
    network-manager-vpnc
    Simplest way to have VPN Connections appear on the menu is to just reboot, unless you know the set of services to be restarted.

  23. ktlb06 said:

    July 27th, 2008 at 1:43 am

    To get the VPN connections selection to appear,
    In network manager you have to enable roaming mode for eth0 setup. That means you have to be using DHCP, and not a static IP address. This is a known bug.
    See https://bugs.launchpad.net/ubuntu/+source/network-manager-applet/+bug/145107

  24. gxbacher said:

    August 14th, 2008 at 3:53 pm

    I can confirm ktlb06′s post, and further, the same is true in KUbuntu 8.04. It is even more confusing, because it says it is connected to the VPN, but it doesn’t work. If I configure the interface for DHCP, then the VPN works. It’s a bit of a hassle, but it is a workaround (provided you have a DHCP server).

  25. sea2dca said:

    September 19th, 2008 at 10:32 am

    Just want to chime in here. I was able to connect after reading the comment by karlos. Some of the following packages had not been installed:

    network-manager-pptp
    network-manager-openvpn
    network-manager-vpnc

    After installing, rebooting and ensuring that my vpn settings were as described above with the additional clarification of the following authentication settings:

    Authenticate Peer NOT Checked
    Refuse EAP Checked
    Refuse CHAP Checked
    Refuse MS Chap Checked

    it connected fine.

  26. cantinnr said:

    September 23rd, 2008 at 4:28 pm

    I’m running KDE4 on kubuntu Hardy.
    I installed NetworkManager that i supposed to work under kde. It doesn’t appear in the task bar. I tried to turn off knetworkmanager thinking of some kind of exclusion between the two of them. didn’t change anything.
    Does somebody have a clue on how to get a menu from NetworkManager in kde4, in order to configure the vpn and then go back to knetworkmanager ?

  27. slvr.srfr said:

    October 1st, 2008 at 9:39 pm

    If you get an error like this:
    “VPN Connect Failure
    Could not start the VPN connection ‘Work VPN’ due to a connection error.
    VPN Connection failed”

    Try changing the MRU to 1500 as well as the settings by Karl and sea2dca above.

    It worked for me. (answer found from http://www.irongeek.com/i.php?page=security/ubuntu-pptp-vpn-and-cisco-vpn-3000-concentrator)

  28. Paca said:

    October 9th, 2008 at 11:49 pm

    thankyou slvr.srfr, your trick of MRU = 1500 worked for me and I had the exact same log outputs as gopo and others. Cheers

  29. cantinnr said:

    October 12th, 2008 at 4:00 pm

    Thanks to this link, I was able to make knetworkmanager working.
    But like many others, it says it’s connected but with a ifconfig I can see that there’s no tunnel interface.
    I am in DHCP (by the way, in kubuntu where can I choose a fix IP ?).
    In PPTP VPN configuration (knetworkmanager) I don’t have a authenticate tab, I only have “required information” and “optional information” tabs, so I don’t know if I have “Refuse EAP” Checked, “Refuse CHAP” Checked, “Refuse MS Chap” Checked.

    anyway, if anyone have a clue, here’s my log messages :
    Oct 12 22:38:35 laptop-vince pppd[16622]: Plugin nm-pppd-plugin.so loaded.
    Oct 12 22:38:35 laptop-vince pppd[16622]: nm-pppd-plugin: plugin initialized.
    Oct 12 22:38:35 laptop-vince pppd[16623]: pppd 2.4.4 started by root, uid 0
    Oct 12 22:38:35 laptop-vince pppd[16623]: Using interface ppp0
    Oct 12 22:38:35 laptop-vince pppd[16623]: Connect: ppp0 /dev/pts/3
    Oct 12 22:38:36 laptop-vince pppd[16623]: nm-pppd-plugin: CHAP check hook.
    Oct 12 22:38:36 laptop-vince pppd[16623]: nm-pppd-plugin: CHAP credentials requested.
    Oct 12 22:38:36 laptop-vince pppd[16623]: CHAP authentication succeeded
    Oct 12 22:38:36 laptop-vince pppd[16623]: local IP address 172.16.7.251
    Oct 12 22:38:36 laptop-vince pppd[16623]: remote IP address 172.16.7.254
    Oct 12 22:38:37 laptop-vince pppd[16623]: CCP terminated by peer
    Oct 12 22:38:37 laptop-vince pppd[16623]: Compression disabled by peer.
    Oct 12 22:38:37 laptop-vince pppd[16623]: LCP terminated by peer
    Oct 12 22:38:37 laptop-vince pppd[16623]: Connect time 0.1 minutes.
    Oct 12 22:38:37 laptop-vince pppd[16623]: Sent 4 bytes, received 4 bytes.
    Oct 12 22:38:37 laptop-vince pppd[16623]: Modem hangup
    Oct 12 22:38:37 laptop-vince pppd[16623]: Connection terminated.
    Oct 12 22:38:37 laptop-vince pppd[16623]: Exit.

  30. Mike said:

    October 20th, 2008 at 7:14 pm

    Anyone have tips on getting this working in intrepid? I keep on getting “VPN failed because there was no valid VPN secret”

    Thanks!

  31. johndoe said:

    November 1st, 2008 at 8:19 am

    It also depends on how your workplace has configured the VPN.
    In the end I found that all the default settings worked with the one exception of setting the MRU value to 1500 on the PPP Options tab.

  32. Alex said:

    November 4th, 2008 at 5:12 pm

    For intrepid make sure you remove the password and manually type it eveytime you want to connect. Seems to be a bug. I however have not gotten past the trying to connect. It keeps saying that is has failed to connect. NOt quite sure what the reason there is yet.

  33. ikar6 said:

    November 8th, 2008 at 1:11 pm

    O.K, I have finally made it possible to connect to a MS VPN server with Ubuntu 8.10. Here are my settings: in the advanced tab you must have checked all the boxes (PAP, CHAP, MSCHAP, MSCHAPv2). You must also check “Use point to point encryption” and “allow strateful encryption”. From the drop down menu select “128 bit encryption”. The rest I left it in the default settings and it did the trick for me. Hope it helps!

  34. ikar6 said:

    November 8th, 2008 at 1:15 pm

    continued from previous post:
    also VERY IMPORTANT: DO NOT store the password. When I did that my connection failed. You have to type the password every time you need to connect. This is definitely a bug and needs to be addressed.

  35. Mark said:

    December 22nd, 2008 at 8:04 pm

    Don’t know if anybody quite had the same from the above, but I had my PPTP VPN connection working fine, installed the latest updates and boom – got the signal 15 error mentioned a few times above. Turned out I had to recreate my vpn connection (with exactly the same settings) and then it worked. Most bizarre and somewhat frustrating…..

    toodle pop
    Mark

  36. Spencer said:

    January 31st, 2009 at 2:20 pm

    Thanks for this tip. It got me headed in the right direction on Ubuntu 8.10. For my situation the most important part was as lkar6 did and checking “Use … (MPPE)” and “Allow stateful encryption”

  37. Larry Lambert said:

    February 4th, 2009 at 9:10 pm

    Thanks for the tip, Mark. This worked for me, too.

  38. Los said:

    February 15th, 2009 at 10:11 pm

    I am able to connect. How do I browse the files on the server?

  39. Alvaro Brange said:

    March 6th, 2009 at 9:38 am

    Thank, It worked in my Ubuntu 8.10, thank to ikar6 comments :) but check “use Point to Point encryptation” was not necessary.

    Regards,
    Alvaro

  40. Henrik Holm Nielsen said:

    May 14th, 2009 at 4:26 am

    Rob,

    I love you for this comment:
    – Switch to the Compression & encryption tab and select “only Require 128bit MPPC encryption” and Enable “statefull MPPE”.

    Many, many thanx – this option cost me about 2 nights of sleep :) )

    Cheers,
    Henrik

  41. thanapong said:

    August 26th, 2009 at 3:46 am

    Thanks for very useful tips (Special thank for Mark, Re-create vpn connection)

    thanapong