Message-ID: <3A4D4372.78643E4F@knipferspot.com> Date: Fri, 29 Dec 2000 21:07:46 -0500 From: Mark Knipfer X-Mailer: Mozilla 4.75 [en] (Windows NT 5.0; U) X-Accept-Language: en MIME-Version: 1.0 Subject: [Fwd: BUGS: Windows 2000 L2TP protocol, VPN connections] Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Newsgroups: microsoft.public.win2000.general,microsoft.public.win2000.networking NNTP-Posting-Host: 204.252.74.195 Lines: 1 Seeking solutions! -------- Original Message -------- Subject: BUGS: Windows 2000 L2TP protocol, VPN connections Date: Fri, 29 Dec 2000 08:22:09 -0500 From: Mark Knipfer Reply-To: win2000@knipferspot.com To: win2000@knipferspot.com I have been working with a local ISP to provide VPN connections via ADSL. I found Windows 2000 natively supports Layer-2 Tunneling Protocol (L2TP). Connecting to the ISP's VPN server works great via Windows 2000 L2TP, however, there are some bugs and problems: 1. If the L2TP connection breaks, either by user intervention or by other means, you cannot re-connect back to the VPN server. Windows 2000 L2TP sends a keep-alive message to the VPN server every sixty (60) seconds. This prevents the L2TP connection re-establishing the link to the VPN server. 2. Once the L2TP connection disconnects, Windows 2000 will NOT properly shut down. You need to either press the power switch or the restart switch on the computer case to restart Windows 2000. However, constant abnormal Windows 2000 restarts can and may damage or corrupt the Windows 2000 MFT, Indexes, and NTFS. To my knowledge, the only way to correct damaged or corrupted Windows 2000 NTFS indexes (or indicies) and MFT is to cleanly install Windows 2000. 3. By default, the Windows 2000 L2TP connectoid to connect to the designated [ISP's] VPN server has NetBEUI and Printer and File Sharing enabled. In Windows 2000 click Start | Settings | Control Panel | Network and Dial-Up Connections, right click on the L2TP connectoid or 'Local Area Connection [##]' entry and click Properties. In the Properties window click on the Networking tab and unselect 'NetBEUI Protocol' and 'File and Printer Sharing for Microsoft Networks'. 4. If an already active Windows 2000 L2TP session exists on a computer, whether from a third-party program or a Windows 2000 L2TP connection, you cannot connect more than once. This may also cause Windows 2000 to spontaneously reboot when a second connection attempt is made. -- Mark Knipfer The Win2000 Discussion List http://knipferspot.com/win2000.html