Point-To-Point Tunnelling Protocol is a networking protocol which exposes a layer 2 tunnel. It uses a TCP connection for control communications, and a GRE tunnel for the actual data. It is typically used to create VPNs.

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Windows Server 2008 PPTP connection disconnects at random times and will not reconnect

I'm running into an issue with a VPN over a PPTP (WAN Miniport) connection. There are two significant issues: The connection will not stay active if we log off the machine. Currently we login via ...
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Making to the DNS on two different VPNs play nice

Setup: I have two separate networks I need to connect to at the same time. VPN 1 PPTP IP : 192.168.2.0/24 DNS : 192.168.2.32; 192.168.2.34 (Windows 2003) Domain : old.com Forwarder : ...
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How do I set up routing for PPTP VPN on Windows Server 2008 R2?

I am trying to set up a remote access VPN server to enable our employees to connect to the office network and access resources on it. In addition, several of our production servers (not located at the ...
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Trying to get an ubuntu headless server to call home

I would like to install PPTP on my remote ubuntu server, so that it will connect back to the main office, so that backups, and and also data transfer can take place. Can anyone suggest a good guide ...
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603 views

pptp cannot connect

I have a pptp server on ubuntu behind a router. From inside the network I can connect to pptp server, but from the internet I can not. 1723, 1792 port are forwarded in router. Here is a full log: ...
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Which is the best OS for PPTP?

I installed PPTPD on both Redhat and ubuntu, and I found that the ubuntu is more slow than Redhat by testing, that is to say, Need I do some network optimization with Ubuntu?
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Routing a PPTP client and VMware Server instance running on the same box

I have a Windows 2003 SBS box. It has 2 physical NIC's: WAN and LAN. The WAN is a public IP. The LAN is a simple 192.168.2.x subnet with Microsoft DHCP Server. Microsoft Routing and Remote Access ...
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160 views

Protocol Security With PPTP

I find these words in pptp client source : Summary by Peter Mueller PPTP is known to be a faulty protocol. The designers of the ...
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Is it possible to setup PPTP Client in AP?

I want to do some development with AP and make pptp client run in AP, then other PC can connect the AP and use the VPN traffic, is this possible?
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How to setup a fast VPN server

I am trying to set up a VPN that has a fast download speed. The server I have is a linux server and from there I can download 2 megabytes a second. At home I can also download with 2 megabytes a ...
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What is difference between L2TP and PPTP?

I need a high performance VPN server, who can tell me the difference between L2TP and PPTP ?
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How to improve PPTP speed?

I want to supply PPTP(vpn) service to users, and I plan to supply one server for 30 users and give at lease 10M bandwidth per user. Of courseļ¼Œ my server has enough bandwidth. I want to ask is my ...
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How to raise speed with PPTP?

I am using pptp to access internet, I find that, the speed is about 200k/s if use pptp, the speed is 1M/s without pptp. so how to raise the pptp speed? thanks!
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How to make an OpenVPN connection over pptp connection in ubuntu

I need to connect to my ISP's server using pptp. And then I need to connect to the private network at my office using OpenVPN. OS: Ubuntu 10.10 How can I make such connection? Thank you.
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492 views

Debian firewall: Shorewall - VPN2VPN policy doesn't work

I have a problem with my shorewall policy. There are 4 zones configured in shorewall but the policy vpn2vpn:accept doesn't work. I want to establish connections between PPTP clients. They are dropped ...
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694 views

How to disable encryption for the remote vpn clients in PPTP?

I find there is one compress PPP packet in GRE packet, so how to get the PPP packet without encryption and compression ? thanks
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170 views

How to get vpn pptp client ip in GRE packets?

I hava captured some packets for pptp client, but how to get the virtual ip of pptp client? thanks
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What is difference between OpenVPN and PPTP?

I know PPTP is based PPP, so what is the openVPN based on ? can the packets of openVPN be routed by ubuntu server ? thanks!
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180 views

How to capture packets of VPN

I hava 2 VPN servers, one is pptp, one is openVPN, I need to capture the VPN response packets for the VPN client, and later I need to forward these packets to vpn clients by another linux server. I ...
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Can I route packets between PPTP clients?

I hava one pptp gateway(192.168.1.1), and one pptp linux client(192.168.1.2), and one pptp windows client(192.168.1.3), When gateway receives response packets of 192.168.1.3 , can i forward these ...
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what is simplest VPN type approach to use with home network when travelling? [closed]

I'm going travelling and would like to be able to VPN from a internet cafe to home so I can do internet banking more securely. Any advice re what would be the best VPN technology/approach to use ...
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Can't ping through PPTP when Shorewall is active

I have a pptpd server and Shorewall running on the same server. The server has two ethernet connections (eth0 -> WAN, eth1 -> LAN) and its IP on the LAN is 10.11.100.201 I can establish a VPN-tunnel ...
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Slow connections across VPN

I have a few databases located on a VPN. Whenever I establish a new connection to these databases across the VPN, it takes along time (3-4 seconds). Once established, everything seems to run ...
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PPTP Clients Connect But Do Not Have Network Access

I have clients that connect to a Window Server 2008 R2 box via PPTP. They are able to successfully negotiate a connection and receive a local IP address, but are unable to access any internal network ...
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Mac OS X PPTP VPN issue ping: sendto: No buffer space available

The VPN connects successfully but after some time the connection is unusable (VPN is used as primary gateway). Ping would reveal: ping: sendto: No buffer space available This looks like the same ...
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Rewrapping PPPoE to PPTP

It is my understanding that PPPoE is just PPP wrapped in Ethernet packets. PPTP is PPP tunneled over GRE/IP. So, my question is, is it possible to take incoming PPPoE packets and easily rewrap the ...
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Requiring authentication for Internet access on an open network

If I have an open mesh wireless network (or, really, any open access network) and I want to keep the network open access: that is, anyone with the right hardware should be able to connect and talk to ...
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420 views

Can radius interact with pptp beyond authentication?

I've managed to setup pptp to use Radius authentication - making it much easier to manage users in an sql database than the default password file. However, ideally I'd like to be able to get the ...
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pptp vpn - Kill User Connection

I'd like to be able to terminate a user's connection to my pptp server from the server itself without interrupting anyone else's connection. Problem is - I have no idea how and have found no useful ...
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Client VPN works, but only from certain locations (ISA/TMG)

I've done something very simple. Or so I thought... I have setup VPN client access in TMG (or ISA, they're pretty alike). I created a group called VPN in AD, added that as allowed VPN users in TMG, ...
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941 views

Intermittently failing PPTP VPN connections

I'm two weeks in as the System Administrator at a midsize manufacturing company with executives and sales staff who make heavy use of remote access. From almost the day I arrived, I started getting ...
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3answers
1k views

Can't connect to PPTP server outside of network

I'm trying to configure my Cisco 881 running IOS 15 to allow pptp connections to servers outside of the network. I know the PPTP server is configured correctly, because a)it's a clients VPN, and b) ...
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Debian server + PPTP VPN - connection not working

I set up a Seagate DockStar with Debian Squeeze as a litte server in my home network. I'd like to access it from outside my own network now, so I need a VPN connection. BTW, I don't have a router with ...
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VPN Error 778: It was not possible to verify the identity of the server

We have a Windows 2003 server with Routing and Remote Access configured to support PPTP VPN. We recently migrated the server infrastructure to a new location, although all public and private IP ...
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Error 619 PPTP VPN on Windows 7

I have spent 3 hours trying to work this out but I'm all out of ideas. I have a 3G internet connection via a USB dongle and a Windows 7 laptop, I cannot connect to a PPTP VPN while connected to the ...
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Linux VPN Client with SecurID/RSA Tokens?

I'm setting up a VPN that needs to have clients on Linux, Windows, and Mac. I was planning to sue a PPTP client, with RADIUS to the SecurID RSA install, but I can't find any way to set up a linux ...
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349 views

PPTP + Ubuntu + Windows XP: Cant ping Router

I have an ubuntu server with 2 network cards: eth0, with a samba server and eth1 bridged to a Virtual Box Machine running windows xp. When I connect to the network using VPN from another winxp ...
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What's the advantage of OpenVPN over SSTP?

If considering Windows only environment, what's the advantage of introducing OpenVPN as the company VPN service, instead of Windows built-in protocols? Especially the new SSTP protocol already ...
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361 views

PPTP-Gateway routes icmp but no http

got a very strange behaviour with a Gentoo-based PPTP-Gateway here. I configured the VPN and the default routes - from the Gateway itself, the connections out to the VPN work great. But from the ...
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Using PFSense to securely connect two networks

At our local office we have a WAN connection which we break off into two VLANs using a Cisco RVS4000 Router: Our main gigabit ethernet wired network 10.1.0.0/24 and a wireless network 172.16.1.0/24. ...
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PPTP/GRE Multi-forwarding NAT IPTables Example

Google is showing me some returns on PPTP/GRE NAT through iptables/netfilter that will allow multiple connections. However, I am not finding an example of using this pptp helper module that allows ...
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Once connected to RRAS VPN in Windows 7 can't access local domain resources

I'm connected to our remote data center via RRAS VPN which is running as a Domain Controller. The client I'm connecting with is on our local domain. Once I'm connected to the remote domain using my ...
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693 views

Linux PPTP VPN server using local account passwords?

Is there a way to configure the PPTP server under Ubuntu 10.04 to allow users to log in with their username/password from the local machine (the Ubuntu server, that is, not where they are connecting ...
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Ubuntu Server IPtables to Allow PPTP VPN Traffic

I am trying to setup a "simple" VPN server for my network so I can easily connect remotely to a few boxes in my network. I can access the VPN and register on the network. I get an IP but can not ping ...
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Linux PPTP client problems

I recently reinstalled my server from Debian Lenny to Squeeze and ever since the reinstall I'm unable to establish a PPTP connection to a remote site. The remote site is running Windows RRAS PPTP ...
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Export or Batch script Windows VPN Network Connection

We use a Windows PPTP VPN connection to get onto our network's VPN. Is there a way I can write a batch script or export my settings to add this VPN connection to another person's computer. I also ...
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489 views

Can't RDP Into Windows Server After Windows Server Establishes VPN Session

I've setup a Windows 2008 Server in a Cloud Environment. I am able to RDP to this Windows Server ("aka CloudServer") in the Cloud Environment. When I establish PPTP VPN connection from the ...
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pptp server 2003 hands out gateway from nic not dhcp server

I have created a pptp RRAS server for a handful of clients to connect to. I would like them to use the servers default gateway (.1) for internet access. They are able to successfully connect (& ...
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DD-WRT VPN error 800?

I have set up a router with DD-WRT Mega on my Asus WL-500gP V2, and I can't connect to the VPN service. I have set it up according to the configuration on the DD-WRT wiki, so the server IP is set to ...
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DNS Server Order Incorrect on Windows 7 via PPTP VPN to Windows 2003 Server

When I connect a Windows XP laptop via PPTP vpn to our Windows 2003 Server, the DNS Server order is correct: 192.168.8.3 208.67.222.222 208.67.220.220 But when I connect a Windows 7 laptop via PPTP ...