Ubuntu Networking :: PPTP VPN Connection Is Failed After A While?
Mar 12, 2010
I setup a PPTP VPN connection in ubuntu 9.10 (x86_64) using NetworkManager. After enabling the VPN connection, I can browse web pages (it's perfect) but after a while the vpn connection is terminated! The following is my syslog after connecting and terminating:
Code:
Mar 12 22:10:10 amir-desktop NetworkManager: <info> Starting VPN service 'org.freedesktop.NetworkManager.pptp'...
Mar 12 22:10:10 amir-desktop NetworkManager: <info> VPN service 'org.freedesktop.NetworkManager.pptp' started (org.freedesktop.NetworkManager.pptp), PID 2204
I thought configuring a vpn would be a piece of cake, but it seems I'm missing something.
I'm attempting to create a vpn (pptp) using the networkmanager (0.7.1). I enter the gateway (I assume thats the server I'm trying to connect to) and my login information. What is the NT Domain?
When I try to connect it only tells me after a while that it failed to do so. How can I find the information on what went wrong in the process?
I tried to configure my vpn connection using pptp from the shell following following tutorial: [URL] now, if i use Code: pppd call novax to connect to my vpn i see following appearing in /var/log/messages:
Code: Feb 10 21:11:57 reg-laptop pppd[2655]: pppd 2.4.5 started by root, uid 0 Feb 10 21:11:57 reg-laptop pppd[2655]: Using interface ppp0 Feb 10 21:11:57 reg-laptop pppd[2655]: Connect: ppp0 <--> /dev/pts/0 Feb 10 21:11:58 reg-laptop pppd[2655]: CHAP authentication succeeded Feb 10 21:11:59 reg-laptop pppd[2655]: MPPE 128-bit stateless compression enabled Feb 10 21:12:00 reg-laptop pppd[2655]: local IP address 10.243.249.22 Feb 10 21:12:00 reg-laptop pppd[2655]: remote IP address 10.243.249.20
verifying with ifconfig, my ppp0 ip is correctly set to 10.243.249.22 - i can also ping this ip but i tried to ping other ips in our network and i can't reach any of them - did i mess up the route maybe? Content of my /etc/ppp/ip-up.d/route-traffic:
I'm using Kubuntu 9.10, my pppd version is 2.4.5 and pptp is 1.7.2 I'm trying to connect to the iPredator VPN service, but I keep running into problems with LCP. I've tried using knetworkmanager, nm-applet, kvpnc and plain old text-based configuration to no avail. Here's a snippet of pppd's output:
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(I've got "defaultroute" in my /etc/ppp/peers/ipred config file.) Any ideas what could be causing this? Could it even be my router? It claims to support PPTP, but considering it claims a lot of other things which aren't true, I wouldn't be surprised if it was the culprit.
I am using relakks.com VPN Service and set it up with gnome's default nm-manager interface. Everything is just perfect when I'm browsing the web. I can do it for hours and nothing happens. On the other hand, when I open up a torrent client - after 15 seconds to 2 minutes - I get a nice kick off the VPN.
I managed to set up a PPTP VPN connection in Ubuntu 10.04, and it worked first time.This was about 3 months ago. It was working yesterday (Oct 05 2010), but when I came to log in to the VPN today it doesn't work. I tried the same VPN connection on my wife's laptop which runs Vista and it works. I have tried re-entering the details, even deleting and setting up from scratch via network manager. And yes I have the correct VPN plugins. what I should do. Is there a log file so I can have a look at it to see what the problem is. If there is where is it located. The computer is able to connect to the internet without any problems, just can't connect to the VPN. The only thing I can think of is that the update manager popped up this morning so a few things have got updated today. maybe something in there broke the VPN connection.
I am unable to make my VPN connection to my university work correctly. Before, it would work some of the time without changing any settings. Now it never works. Unfortunately my institution does not provide support to linux users (outrageous!) so I'm on my own. Here is a link to the configuration instructions for windows and mac users, I've tried to configure mine based on this information but I have not been able to do it.
I have just managed to setup a small server were I run rtorrent through och VPN tunnel pptp based. When I start up my server without starting the tunnel it looks like this.
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I guess that something happen with the VPN connection, assigned a new ip number maybe and that that made the change.
Here's my setup: Slackware 13.1 External IFace = eth0 / DHCP (assigned from comcast) Internal IFace = eth1 / 192.168.0.0/24 I've made it connect/authenticate, but I can't get anything to route through it..
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Really wanting to try and get this setup to where all computers on my lan are forced through the VPN, i've tried most of all things I've googled, and no real luck.
I have updated the system this morning and the vpn stopped working!It gives me an error: invalid secrets.I use network manager to connect to a pptp vpn connection, I use fedora 12.Does anyone know the problem?
recently i rent a xen vps intended to setup a PPTPD vpn server for me and my friends. so we can by-pass the great firewall in china and get back on ....., facebook and stuff. i have already setup the server and i can connect to it without any problem. but i still want to do some further configuration the server:
1. i want to limit the bandwidth to 400k/s per connection. 2. i also want to limit the max connection per user a/c
i have some thoughts on the 2nd requirement. in the user configuration file of /etc/ppp/chap-secret, you can specify the range of ip the user can get, does it limit the max connection per user a/c? or they can connect anyway, just every now and then a box pop up says conflict in IP address?
eth0: 62.2.2.x (public on the internet) GW: 62.2.2.1 (cisco router)
i want to configure my ppptp server to allow users access internet with their own public ips of class 62.2.3.0 62.2.4.0 62.2.5.0
every time i configure my server all users can get thier IPs but they only go out with my server IP same as NAT not routing.
can you show me the proper configuration to make my users connect with public IP and have internet access. use specific DNS ( i did this but some users can not brows by DNS)
is there any way to specify an expired date for each pptp user.
I'm trying to connect to a Microsoft ISA PPTP server from my Linux box. The box I'm connecting from is itself a router. I have no problem connecting a Windows XP machine to the VPN via this machine. This is fine, but I would rather connect via the Linux machine, giving me far more advanced routing options (i.e. no to send every packet from the XP box completely unnecessarily via the PPTP tunnel). The Linux router is running Debian Lenny.
I've checked iptables. There were initially some issues. I've fixed those.
Invoking pppd from the console, I can see that authentication succeeds, but then some negotiation goes wrong and the server terminates the connection. Here's the output from pppd, with the more sensitive stuff removed:
Code: <hostname>:~# pppd call <peer> nodetach debug using channel 19 Using interface ppp0 Connect: ppp0 <--> /dev/pts/2 sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0xe3e45f75> <pcomp> <accomp>] code....
I have set up an ubuntu server running PPTP Server for VPN connections. I can successfully connect from a laptop within the LAN, but taking that same machine to an internet connection and trying to connect back in does not work. The only difference is that when I connect from within the network, I am obviously using the server's LAN (non-routable) address, and when I am connecting from outside the network (from Verizon Business DSL ), I am using the Comcast connection's static IP address.
I have a static IP address on a Comcast Business Class internet connection. Router is set to forward pptp and GRE ports.
Works: VPN Server <- Laptop iPhone -> Internet -> Router -> VPN Server
Does not work: Laptop -> Internet -> Router -> VPN Server
Here is the weird thing. I have an iPhone that connects flawlessly every time through it's AT&T data connection. The laptop however, gets to "verifying username and password", and then returns error 619. It seems that there is an issue only when going through the router using the PPTP client built into MS windows.
I got this error for two days.back then I googled this error and i got some information about log file in /var/log/syslog but i couldn't find it in google at all. this is all i got from syslog . look at the red paragraph
I recently installed Kubuntu 10.10 on my machine, and I configured the PPTP VPN connection through which I connect to the internet. I can successfully connect, but it works really slowly. Slower than it does on Windows 7 on the same computer, with the same settings for the PPTP dialer. In about 20 minutes after I connect, the connection fails and even the modem restarts itself. I tried setting the MTU for the pptp connection to 1400 (I checked, and 1372 is the maximum value before the packets start to fragment + 28 bytes for the IP/ICMP headers), but nothing seems to help.
I'm unable to connect to a windows vpn connection using pptp this was working yesterday but for some strange reason it stopped working. My other vpn tunnels to cisco and so on are working great. I have the following log:
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Nov 26 17:05:15 falx NetworkManager[1319]: <info> VPN service 'pptp' disappeared I have the latest updates, so that means that selinux was updated today. My selinux policy was enforcing but I changed it to disable and allready rebooted. Iḿ using Fedora 14 (I already regret for making the upgrade from 13, also have a problem with display drivers or something, but thats another story) does anyone encounter a problem like mine with pptp? can you share the solution if there is one?
Alexandre. Update: At the moment after connecting by Ethernet cable to my home network the connection wold be established but no address would work to the remote network, I've disconnected the cable and resumed using my wifi connection and the VPN connection is working again!! I don't have a clue about what just happened.. since itś working I need to get some work done and will provide more info on this matter if I found something new.
Since I completely switched to Opensuse11.3 From MS-Windows OS. The Problem I had is a PPTP VPN connection in windows, Which I used to connect Via a connection, The VPN provider gave me. Since these connection are for MS-Windows , I can't create a connection manually in Opensuse. I used , KDE control module/Network connection/VPN/add -> PPTP then I entered the host ip in NT DOMAIN field , my username, and password, and left all other options (including Gateway) the way it was. After that, every time I try to connect to this connection, NOTHING happens.
everything works fine, clients can connect to the vpn server with no problems and they can ping local machines! but no internet access through the vpn connection unless i uncheck the default gateway option on my client machine which is not what i want. I want my clients to get my server's ip address. my server is behind a router (router's ip : 192.168.0.1 | server's local ip: 192.168.0.100) so i used localip 192.168.0.100 & remoteip 192.168.0.234-238 in pptpd.conf. it think there is something wrong with routing or firewall rules, because it seems that the DNS resolution works .. when i try to browse a website my browser says "Waiting for xxxxx.com..." and it stays on that stage forever ! the funny part is that google.com works fine (don't know how).
p.s : * I have already opened the port in on my router. I even tried it locally to make sure that the router is not the problem here. * already added ms-dns 208.67.222.222 / ms-dns 208.67.220.220 to pptpd-options. (found another guide that suggested to do this, before adding these two lines even dns resolution was not working.)
I tried since yesterday to get a VPN-connection but it seems that until now I'm not able to reach the Company-network. Our company use the pptp connection. I tried many different setup's but without sucess. I use Ubuntu 9.10 and installed the pptp-manager.
Following settings: Gateway (set) Username (set) MSCHAPv2 (check) Point to point (check) Stateful (check) BSD (check) Deflate (check) TCP (check)
Below you find the result from the syslog, what can I do now? Code: Mar 14 13:03:58 snofla-desktop pptp[2767]: nm-pptp-service-2756 log[ctrlp_disp:pptp_ctrl.c:950]: PPTP_SET_LINK_INFO received from peer_callid 0 Mar 14 13:03:58 snofla-desktop pptp[2767]: nm-pptp-service-2756 log[ctrlp_disp:pptp_ctrl.c:953]: send_accm is FFFFFFFF, recv_accm is FFFFFFFF Mar 14 13:03:58 snofla-desktop pptp[2767]: nm-pptp-service-2756 warn[ctrlp_disp:pptp_ctrl.c:956]: Non-zero Async Control Character Maps are not supported! Mar 14 13:03:58 snofla-desktop pppd[2759]: Connection terminated. Mar 14 13:03:58 snofla-desktop NetworkManager: <info> VPN plugin failed: 1 ......
I've been using network-manager-pptp to create a PPTP VPN connection in my Ubuntu virtual machine for a while now, but I have constant problems with random disconnects. I don't know what the cause of the problem is, but I suspect that network-manager-pptp is not the most well-written piece of software around...
Is there another way of instantiating PPTP connections in a more robust manner? The same PPTP server works reasonably OK with Windows 7 (some disconnects, fewer than in Ubuntu, and Windows has an auto-reconnect feature).
I read some guides on using the pptp command, but they all seemed pretty low-level, messing around with ppp. I never found the time to figure out how it all was supposed to fit together. Has anyone accomplished what I'm trying and is willing to share the knowledge?
EDIT: Tried kvpnc, and it seems the stability is more or less the same as network-manager-pptp. The error message is "Modem hangup".
To clarify, I understand that the connection can go down, but I want to be able to reconnect automatically when disconnected.
I recently setup ubuntu 9.10 in my desktop..I don't know whether the connection is dialup or not. I used the connection with cable connection. I have got the following information from my ISP:
User name: n372_asad_go@brisksys.net service name: brisknb password: 16251521
A while ago i attempted to use ubuntu as my default operating system and it failed, i could not get the shares to work properly and i gave up. Yes i know, may be i should have kept going.
Any way, my problem is, Im attempting to use ubuntu 11.04 now, and this time i am realy keen on going through with this, however... for some reason when i connect my wired connection cable ubuntu keeps failing to connect. this is with the auto eth0.
Can any one help me with this problem? This is one of the major things that i will need to do if i want to switch over to ubuntu.
So I got Ubuntu 9.10 on my laptop working really neat and wanted to upgrade my desktop to 9.10 as well. So I reinstalled Ubuntu there and now I can't connect to my network anymore....
I have a usb wireless adapter (currently Sitecom as I bought a new one today to hopefully fix it, but ended up at exactly the same problem as with my old adapter). The network manager I'm using now is Wicd since some topics I was looking through were about malfunctioning GNOME network-manager (which I removed) and suggested to try this. The GNOME network-manager kept prompting to insert my WEP network key which was a correct one. When I removed all security from the network it didn't prompt anything anymore but just failed to connect. The Wicd network manager is so nice to tell me that it cannot obtain the IP address however, so I suspect that this is my main issue... but I have no idea what I can do about this? Tried using a static IP and then I get the message "Connection failed: Could not contact the wireless access point."
I feel powerless as my knowledge here is just lacking..
