From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: Re: VPN connection from Windows 2000 guest to remote server. Date: Thu, 25 Sep 2008 11:46:48 +0300 Message-ID: <48DB4FF8.6050809@redhat.com> References: <200809251051.41680.calie@look.ca> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: kvm@vger.kernel.org To: Colin Alie Return-path: Received: from mx2.redhat.com ([66.187.237.31]:34754 "EHLO mx2.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751652AbYIYIoj (ORCPT ); Thu, 25 Sep 2008 04:44:39 -0400 In-Reply-To: <200809251051.41680.calie@look.ca> Sender: kvm-owner@vger.kernel.org List-ID: Colin Alie wrote: > Good morning, > > Is it possible to establish a PPTP connection from a guest running Windows > 2000 Professional SP4 to a remote machine running Windows Server 2003 using > user-mode networking? > > It appears to me that the problem is that GRE protocol packets are not being > successfully transmitted. I can create a PPTP connection to the VPN server > from the host machine and, using iptraf on the external interface, I see GRE > packets being transmitted. However, when I initiate the connection from the > guest machine, using iptraf, I see the initial connection using TCP to port > 1723 on the server but no GRE protocol packets are detected. > > GRE is not supported by user mode networking. Try bridging or VDE. -- Do not meddle in the internals of kernels, for they are subtle and quick to panic.