Networking :: PPTP Client Fails To Connect To Microsoft ISA PPTP Server?
Sep 17, 2009
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....
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Jan 7, 2011
I am trying to connect to a PPTP VPN at work, and I cannot accomplish that. Both server and client are using Ubuntu 10.10.
Code:
Jan 7 11:32:26 multicore-dev03 NetworkManager: <info> Starting VPN service 'org.freedesktop.NetworkManager.pptp'...
[code]....
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Mar 13, 2010
i have a VPN server PPTPD on Centos 5.3
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.
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May 8, 2010
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:
Quote:
May 8 16:37:05 li99-23 pppd[2113]: 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[2112]: 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
[Code].....
Ive checked that the name,passwords all match, which they do. Has anybody seen this before ?
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Dec 30, 2010
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.
Code:
CTRL: I wrote 32 bytes to the client.
Dec 29 23:27:48 frankenstein pptpd[9402]: CTRL: Sent packet to client
Dec 29 23:27:48 frankenstein pptpd[9403]: CTRL (PPPD Launcher): program binary = /usr/sbin/pppd
[code]....
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.
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May 10, 2010
I am trying to connect to a windows 2000 VPN server at work, with my current settings in DOES connect to the VPN and i can ping the domain server which is 10.1.1.2 but the first issue is i cannot ping the other computers on the network(via hostnames) can't remember the ip address of the other machines . second issue is when the connection is established and i RDP into 10.1.1.2 ok great i am connected to the server but any interaction in the RDP session even moving the mouse on the screen kills the session and the VPN connection fails.
Running Ubuntu 10.04 LTS 64Bit
Image of current settings in network manager:
Syslog:
Code:
May 11 12:08:04 oliver-desktop NetworkManager: <info> Starting VPN service 'org.freedesktop.NetworkManager.pptp'...
May 11 12:08:04 oliver-desktop NetworkManager: <info> VPN service 'org.freedesktop.NetworkManager.pptp' started
[Code].....
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Jun 29, 2011
I am trying to connect my pptp client Linux to a pptp Linux server using modem but no success. I can only tweak ppp linux side Observing the following log I found it�s due to MPPE Support configuration mismatch in pppd, pppd (linux client) is refusing to accept MPPE encryption.
pppd[24545]: pppd 2.4.5 started by root, uid 0
chat[24547]: abort on (NO CARRIER)
chat[24547]: abort on (NO DIALTONE)
chat[24547]: abort on (ERROR)
chat[24547]: abort on (NO ANSWER)
chat[24547]: abort on (BUSY)
[Code]....
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Sep 2, 2009
im centos 5.3 At first, I used pptp-1.7.2-3.rhel5.i386.rpm from [URL]. But it didn't appear any process of install without a warning about the key problem, and I can't use rpm -e to uninstall it, I just uninstall it from xwindow. Then, I download the pptp-1.7.2-3.tar.gz from [URL] After make and make install, it appeared a problem when i do # pptpsetup --create tunnelname --server xxx.xxx.xxx.xxx --username somebody --password sercet。It told me "./pptpsetup: couldn't find MPPE support in kernel."
But im centos 5.3,and uanme -a: Linux localhost.localdomain 2.6.18-128.el5 #1 SMP Wed Jan 21 10:44:23 EST 2009 i686 i686 i386 GNU/Linux The kernal is support MPPE, and I have reinstalled the ppp-2.4.4.2-el5.rf.i386.
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Feb 1, 2011
I'm trying to setup IPv6 in a PPTP client configuration on Maverick, but in network manager only IPv4 is available.
On LAN and WLAN IPv6 is working fine but I want to avoid when using a VPN all IPv6 connection are bypassing the VPN which compromises the VPN to a certain extent ..
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Sep 24, 2010
i have installed Linux i.e ubuntu 10.04 on my PC in which i have installed pptp client and able to connect it successfully but problem is that it unable to browse internet. in windows it works fine.
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Jun 13, 2011
I have got pptpd linux server and pptp linux client which connects successfully. Now I want setup idle time (inactive) in pptp linux client so that if the pptp tunnel is inactive say for example 5 minutes it will be automatically disconnected. how can do that, is there any built in feature on pptp client?
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Sep 20, 2010
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.
It goes like this:
Code:
Sep 20 08:25:11 NPC pptp[3496]: nm-pptp-service-3490 warn[decaps_gre:pptp_gre.c:426]: discarding bogus packet 94236 (expecting 93663)
Sep 20 08:25:11 NPC pptp[3496]: nm-pptp-service-3490 warn[decaps_gre:pptp_gre.c:426]: discarding bogus packet 94237 (expecting 93663)
[Code].....
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Oct 31, 2010
1st, i managed to make a VPN connection to my server and after a reboot i get this:I've tried everything that google gives me with "ubuntu vpn service failed to start pptp" search terms.2nd, I've got a DSL connection (PPPoE) to the internet. When i connect it, eth0 looses it's ipv4 ip (I've disabled ipv6). How can I keep it?
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Jun 16, 2010
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?
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Oct 25, 2010
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:
[Code]....
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Jan 18, 2011
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
[Code]...
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Dec 5, 2009
I've followed the information on fedoraguide.info for configuring PPTP but I'm still unable to connect to my windows VPN
This is what I'm getting in /var/log/messages code...
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Oct 27, 2010
I've searched the forums (250 thread limit) for a fix on this, but all the questions seem unanswered or unrelated. My situation is this: I'm running Ubuntu x64 10.10 'Maverick'. I have a cablemodem connection for my Internet access. I have home network running on DD-WRT with the dreadful Linksys WRT54G series router.
My DD-WRT router is 192.168.1.1, subnet 255.255.255.0.
My Linux box is 192.168.1.61, subnet 255.255.255.0.
I have a VyprVPN connection set up successfully on Linux. Mostly everything works great, speed's fine, latency is what I expect it to be. Except... I also run an SSH server to remotely admin the box at port 22, an Apache server running over SSL at port 7001, and a Transmission web client at port 7002 (only secured by basic HTTP realms auth). All of these things worked before I got the VPN working, I'm of course using NAT at the DD-WRT router.
The endresult I am looking for, is to have the security and protection of the VPN (even if it's only perceived) for everything I do on this machine -- EXCEPT on Apache, the Transmission web panel, and the SSH server, which I want to access from the outside world. I have no firewalls running or configured, not even iptables, not even the SPI firewall on DD-WRT. All connections to the aforementioned services from the outside world timeout coming in to the Linux box. They all work from inside my home network (182.168.1.0/24). In case it's needed, he's my routing:
[Code]....
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Jun 11, 2009
I just installed F11 and can't make VPN connection to PPTP server using NetworkManager.
This is what I get:
** (nm-applet:8092): WARNING **: Error in getting active connection 'Vpn' property: (19) Method "Get" with signature "ss" on interface "org.freedesktop.DBus.Properties" doesn't exist
** (nm-applet:8092): WARNING **: _nm_object_array_demarshal: couldn't create object for /org/freedesktop/NetworkManager/ActiveConnection/3
I can connect to this server from Fedora 10 using identical settings.
VPNC tunnels work fine.
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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
Here's what I have done so far code...
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Jan 7, 2011
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.
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Mar 14, 2009
I used VPN before in Windows only.
How can I connect to VPN network by PPTP protocol in a simple way ?
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Feb 25, 2010
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?
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Mar 24, 2010
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?
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Nov 25, 2008
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.
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Sep 15, 2010
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
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Jul 26, 2011
I installed Fedora Linux and I am using GNOME. I've created a vpn connection and is connected to the server without problem (Please see attached photos); But after being connected, Upon opening the site ,Vpn will automatically disconnect.
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Apr 16, 2010
I'm trying to use a vpn server which uses pptp. I've set up pptp as per the Debian Howto and it seems to be working, but I'm not actually acessing the net via the server.Not sure what info would be useful but here are route -n and ifconfig.Can anyone suggest what is wrong here, and how to test if the vpn link is actually working?
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Feb 25, 2010
Updated occurred yesterday and installed new ppp on my F12 box. my previously working, stored PPTP profiles under network manager failed to connect claming some thing about security credentials wrong.) downgraded (yum downgrade ppp) , rebooted and its working again. Im not sure where the real problem is, can "the gods above" or below either forward this to the apporpriate bug tracker (packager, testing, redhat, who owns ppp? network manager?) so this is fixed or downgraded in the next F12 update cycle?
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May 9, 2010
Tried to install pptp vpn server via webmin, and I tried connecting remotely from my laptop, but it keeps failing on the verify username and password - I get a error 778 it was not possible to verify the identity of the server. Not sure what could be wrong with the config..
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