Ubuntu Networking :: Unable To Connect To My ISP Via VPN / PPTP - Enable It?
Sep 10, 2010
I'm trying to establish a connection to my ISP which uses PPTP protocol and a VPN server. The deivce I got from my ISP is a modem, not a router. The problem is my computer is unable to communicate with the ISP VPN server.
P.S Here are the instructions for Windows XP which work: http://portal.bnet.hr/ZG/windows-xp.htm
I followed (or at least tried to follow) tutorials on doing this. I installed network-manager-pptp and tried to configure network manager to connect to a VPN. In the settings when I select MPPE with 128-bit encryption, after I've selected it and applied it, I check the settings and it's invariably unchecked. I tried using KVpnc after getting frustrated with network manager, and I can't seem to get that working either. I've been trying to search for info on this, and I can't seem to find anything on why I can't select MPPE with 128-bit encryption. That seems like it might be why I'm unable to connect to the VPN?
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 setup an OpenVPN server on my server box, it had been working perfectly until today. It operates on port 1194 which I am now unable to connect to (tried telnet). I have checked all the firewall rules and they still allow the port and I have also checked to ensure that OpenVPN is still listening to the port, which it's not but I have tried restarting the service and the box which dosent make any difference. The only thing that has changed is that yesterday I installed Openfire, could this have broken something?
I'm trying to connect to my corporate VPN using a laptop running Ubuntu 10.04. It's a company laptop but as I have chosen to run Linux rather than "a proper" OS, I'm mostly on-my-own as far as getting these things working. Normally that's OK because I am almost always successful - except this problem has had me stumped for several weeks now.
The problem is that I am unable to access the VPN from my home network. I am using the Gnome Network Manager interface to configure the PPTP connection but no matter what combination of options, domainusername formats, encryption options or authentication methods I select, I get the exact same behaviour, which is essentially a 10-second wait, and then a failure message. I checked /var/log/daemon.log:
Aug 15 22:27:46 pc770-ubu NetworkManager: <info> Starting VPN service 'org.freedesktop.NetworkManager.pptp'... Aug 15 22:27:46 pc770-ubu NetworkManager: <info> VPN service 'org.freedesktop.NetworkManager.pptp' started
the laptop is connecting to the Internet via a WiFi access point (bridge mode), then an ADSL router. PPTP pass-through is enabled on the ADSL router and Access Point. if I connect the laptop to the ADSL with an ethernet cable (to eliminate the WiFi), there is no improvement. another laptop (running Mac OSX) is able to connect to the VPN, via WiFi or cable. another client, Windows7, is able to connect to the VPN via cable. an iPhone is able to connect to the VPN via WiFi. this laptop is able to connect to the VPN from inside the corporate firewall.
So I've got three other devices that are able to connect to the target PPTP VPN, and a laptop that can't, except when I move the laptop inside the target network, it can connect. I've tried methodically selecting various VPN options with no change in result. I've also read several Ubuntu Forum posts suggesting turning off EAP and that doesn't help either. I'm now at a loss how to fix this, and what will happen next is I'll be told by Management "we told you so", drop Linux and switch to a "proper" OS like Windows instead, which I really don't want to do.
I recently installed Ubuntu 9.10 on my Dell Inspiron 1545 64-bit laptop. Before that I used Windows7. In Windows, the internet connection worked perfectly well. But after installing Ubuntu, I am unable to connect to the internet. The network-manager applet finally says that "You are disconnected". When I do the "ifconfig", I got no IP address.
So, I installed Ubuntu 9.04 in the same system. But the problem persists.
I gone through many posts in this forum but nothing was useful.
I'm running ubuntu 9.10 on my desktop.Wireless networks appear on the dropdown menu but when I try to connect to my home network the authentication box appears, after typing my password the box disappears and it continues to connect but nothing happens and after a while the authentication box appears again. So.. no internetz connected.
I have this very weird problem: I'm not able to SSH to 1 specific server on the web. I can access everything, but not that specific server.
When I try to SSH, I get this code...
When I reboot to Windows, I can SSH using Cygwin. I'm using Ubuntu 10.04 Lucid and OpenSSH client 1:5.3p1-3ubuntu6. I tried sniffing the network with Wireshark, but I cannot understand why the TCP connection cannot be set up. I'm sure it's an Ubuntu problem as I'm able to connect to that server on the same machine, but different OS.
I'm trying to connect to [URL] but it will not work no matter what settings. I have ticked MPPE, configured gateway, username, MSCHAP and MSCHAPv2 are ticked, using 128-bit encryption. I have tried to forward port 1723 and 1127 in my router, I have also ticked "enable PPTP PassThrough" in the router. I cannot telnet to vpn.itshidden.com. This is on Ubuntu Lucid. These are my logs from an unsuccessful connection attempt:
I am having trouble connecting back to my vpn at work while I'm at home. Mainly need to get our local svn repos for at home development. I successfully connected to the vpn following this [URL]..I am running Lucid Lynx 64bit and I followed the 9.10 section of the tutorial on setting up PPTP connection.
It worked fine. Then I walked away from my computer and it was disconnected when I came back 2 hours later. I was unable to connect back to it. I used my laptop which is running windows 7 and it connected just fine. So, now I am unable to connect to it and have no idea why. I viewed my system log and don't know what to do with the information. Could someone help me out on this.
Jan 18 18:51:43 david-desktop NetworkManager: <info> Starting VPN service 'org.freedesktop.NetworkManager.pptp'... Jan 18 18:51:43 david-desktop NetworkManager: <info> VPN service 'org.freedesktop.NetworkManager.pptp' started (org.freedesktop.NetworkManager.pptp), PID 5532 Jan 18 18:51:43 david-desktop NetworkManager: <info> VPN service 'org.freedesktop.NetworkManager.pptp' just appeared, activating connections
This questions is a little complex but here goes.at a central HQ I have a windows server 2008 R2 machine running routing and remote access. At my home office i have a class C lan with a Fedora 13 machine. I can get fedora 13 to connect using pptp no problem. I have my router running tomato set to redirect all traffic to teh 10.0.0.0 network to my linux server. My questions is how to I make the fedora 13 machine pass all the traffic from my network with destination 10.0.0.0 over the vpn tunnel? so for instance if i ping anything 10.x.x.x from any machine on my network it will find it and reply?
I've got a FC PPTP server up and running but can't connect to it using VPN. I'm using NetworkManager but the connection fails each time. On the server, I'm seeing the following in the /var/log/messages:
May 8 16:37:05 li99-23 pppd: Plugin /usr/lib/pptpd/pptpd-logwtmp.so is for pppd version 2.4.3, this is 2.4.4 May 8 16:37:05 li99-23 pptpd: GRE: read(fd=6,buffer=8059780,len=8196) from PTY failed: status = -1 error = Input/output error, usually caused by unexpected termination of pppd, check option syntax and pppd logs
Ive checked that the name,passwords all match, which they do. Has anybody seen this before ?
I'm trying to get a pptp server up and running. The server starts just fine, but encounters errors when a client tries to connect.
CTRL: I wrote 32 bytes to the client. Dec 29 23:27:48 frankenstein pptpd: CTRL: Sent packet to client Dec 29 23:27:48 frankenstein pptpd: CTRL (PPPD Launcher): program binary = /usr/sbin/pppd
I assume the failed read line is the culprit. I am currently running on a test machine. There is no firewall. I read on this error points to a firewall misconfiguration, but there isn't one.
I have started a newly started a VPN-service with some friends and are offering both OpenVPN and PPTP-vpn.The OpenVPN works perfectly, but we have some problem with the PPTP.It is possible to connect to the VPN, but once connected you can't get any type of access to the outside world ( the interner ).I've googled (Ok, not I, but the tech-guy has) and havn't found any solution so therefor we try here.We are running Debian 5.0 on a XEN VPS.On the machines we've tested OpenVPN works like a charm.
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?
I have servers in remote locations where I have no control over the network routers or firewalls. I need to have a VPN connection to my servers.Is there a way to create a PPTP VPN connection automatically? I don't want to initiate it, I just want it to phone home, and keep phoning home if the connection is dropped.
I successfully installed openvpn and networkmanager openvpn plugin. Then I successfully added a PPTP vpn connection by networkmanager vpn tab which name is "vpn1". But now I don't know how to connect to this PPTP vpn connection. I tried bellow command but no luck. openvpn --config vpn1.config