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Additional, you can establish the VPN connection from internal client, that means the configuration on SBS is mostly correct. I think the cause of this issue may relate to the ADSL router. As the Joe's input, we have to enable TPC 1723 and GRE 47 on the router. I suggestion you replace the ADSL router with another one, and test this issue.
Thank you for kind update.
Hope these steps will give you some help.
According to your description, I understand that your VPN connection to your SBS 2003 will disconnect after a while of idle. If I have misunderstood the problem, please don't hesitate to let me know.
Thanks and have a nice day!
Windows XP Service Pack 2 Support Tools http://www.microsoft.com/downloads/details.aspx?amp;displaylang=en&... >49ae8576-9bb9-4126-9761-ba8011fabf38&displaylang=en.
When opening a new thread via the web interface, we recommend you check the "Notify me of replies" box to receive e-mail notifications when there are any updates in your thread. When responding to posts via your newsreader, please "Reply to Group" so that others may learn and benefit from your issue.
Here are the details over my configuration. - The server has 2 NICs; one connects to a SpeedTouch 608W DSL router (internet gateway) and the other one takes care of the office LAN (additional workstations). The 608W is a business DSL router and has the correct port mappings and firewall disabled. The server has the basic firewall enabled with the necessary exceptions. All the setup of the server is done using the built in wizards of SBS. - The client computer is a XP SP2 connected to the internet via another SpeedTouch 608W DSL router with firewall disabled and no port mappings.
This posting is provided "AS IS" with no warranties, and confers no rights.
Thanks and have a nice day!
Since you want to contact your local MS support for help, I would be appreciate and think it is a more effective ways. To obtain the phone numbers for specific technology request please take a look at the web site listed below.
Pptpclnt download.
Microsoft engineers can only focus on one issue per thread. Although we provide other information for your reference, we recommend you post different incidents in different threads to keep the thread clean. In doing so, it will ensure your issues are resolved in a timely manner.
I am struggling with this problem for 3-4 mounts since I installed the server and I could not find any helpful information on the web. I’ve done some experiments and I saw that if I keep pinging continuously the server from the client the connection is more stable.
Microsoft engineers can only focus on one issue per thread. Although we provide other information for your reference, we recommend you post different incidents in different threads to keep the thread clean. In doing so, it will ensure your issues are resolved in a timely manner.
For urgent issues, you may want to contact Microsoft CSS directly. Please check http://support.microsoft.com for regional support phone numbers.
Suggestion 2: Both internet connections are ADSL subscriptions for residential, but the one for the server has a fix IP. I've contacted the ISP and they see no stability issues on the ADSL connection.
3. Does the OWA connection from your home have the same instability issue?
2. If the disconnection issue doesn't occur internally, please plug a simple hub to the external interface and plug a laptop to the hub, perform the same test which bypasses the router. Will the problem be reproduced?
How to configure Internet access in Windows Small Business Server 2003 http://support.microsoft.com/kb/825763/en-us.
Basically, we will use PPTP Ping utility to determine whether any hardware router or firewall is blocking GRE Protocol 47. The router must be able to pass Generic Route Encapsulation (GRE) protocol 47 for PPTP traffic to connect correctly to use VPN. When a cable/DSL router cannot map GRE protocol 47 to the Routing and Remote Access server, you cannot connect to the server from the Internet.
Based on my research, I suggest we try the following steps to see if we can resolve this issue:
To check if the VPN is blocked by the hardware router, we always use the PPTP Ping to test if 1723 port and GRE protocol are allowed to pass through. To do so: a. Please run Pptpsrv.exe on the server side. b. Run Pptpclnt.exe [ServerNameorIPaddress] on remote client. c. When prompted by Pptpclnt.exe, type some text to send to Pptpsrv.exe, and then click Enter. d. You will see the text received at the host running Pptpsrv.exe. Then you will see five GRE packets sent from Pptpclnt.exe and received at Pptpsrv.exe.
Hello Joe and Liu,
2. Right click the VPN connection, select properties,
OWA does have a timeout, this is not a fault. If you say you are using a private computer, I believe it is twice that for a 'public' connection. I think both values are tweakable in the registry.
Get Secure! - www.microsoft.com/security.
Then you can check the output.
2. Run Remote Access wizard.
I can connect without issues but after a while I cannot communicate with the server although the connection is still alive on both ends. The problem I have is that after 1-2-10 min of idle I do not receive any packets over the VPN connection. I see packets going but nothing is received.
-------------------- | Thread-Topic: PPTP VPN connection problems | thread-index: AcekdN4sKIaBTJOzT5uDL+Fm/jMTcg== | X-WBNR-Posting-Host: 207.46.192.207 | From: =?Utf-8?B?aXVsaWFu?= | Subject: PPTP VPN connection problems | Date: Fri, 1 Jun 2007 10:47:05 -0700 | Lines: 28 | Message-ID: | MIME-Version: 1.0 | Content-Type: text/plain; | charset="Utf-8" | Content-Transfer-Encoding: 8bit | X-Newsreader: Microsoft CDO for Windows 2000 | Content-Class: urn:content-classes:message | Importance: normal | Priority: normal | X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.2826 | Newsgroups: microsoft.public.windows.server.sbs | Path: TK2MSFTNGHUB02.phx.gbl | Xref: TK2MSFTNGHUB02.phx.gbl microsoft.public.windows.server.sbs:41006 | NNTP-Posting-Host: tk2msftibfm01.phx.gbl 10.40.244.149 | X-Tomcat-NG: microsoft.public.windows.server.sbs | | I am connecting to the SBS 2003 R2 server (my office) using PPTP VPN from Win | XP (my home PC). | | I can connect without issues but after a while I cannot communicate with the | server although the connection is still alive on both ends. | The problem I have is that after 1-2-10 min of idle I do not receive any | packets over the VPN connection. I see packets going but nothing is received. | | Here are the details over my configuration. | - The server has 2 NICs; one connects to a SpeedTouch 608W DSL router | (internet gateway) and the other one takes care of the office LAN (additional | workstations). The 608W is a business DSL router and has the correct port | mappings and firewall disabled. The server has the basic firewall enabled | with the necessary exceptions. All the setup of the server is done using the | built in wizards of SBS. | - The client computer is a XP SP2 connected to the internet via another | SpeedTouch 608W DSL router with firewall disabled and no port mappings. | | I am struggling with this problem for 3-4 mounts since I installed the | server and I could not find any helpful information on the web. | I’ve done some experiments and I saw that if I keep pinging continuously the | server from the client the connection is more stable. | | I appreciate any advice and tools to help investigate this problem. | | Thank you, | Iulian | |
http://support.microsoft.com/default.aspx?sc > If you are outside the US please see http://support.microsoft.com for regional support phone numbers.
Microsoft CSS Online Newsgroup Support.
Microsoft engineers can only focus on one issue per thread. Although we provide other information for your reference, we recommend you post different incidents in different threads to keep the thread clean. In doing so, it will ensure your issues are resolved in a timely manner.
The Network Monitor program on SBS may help: http://support.microsoft.com/kb/148942/EN-US/ You can start a capture and then open the VPN, and close the capture after the VPN has stopped responding. If you filter the data captured asking for the PPTP and GRE protocols, you should get some idea of which end has stopped sending. The router may also have useful logging, which you can presumably enable at both ends. RWW should not be affected by VPN issues, so you can sit at the remote end and see what's going on at both ends.
Suggestion 3: I'd like to confirm how to setup the VPN settings on SBS and client with you.
3. Then you can access RWW to download Connection Manager or copy the file from SBS server c:\ ClientApps\Connection Manager\SBSPackage.exe. Please save the sbspackage.exe file in VPN client computer. Then double-click SBSPackage.exe to run it. After this file run the "connect to small business server" will be created and you can use it to connect VPN to your SBS server.
The instability Internet connection will relate to this issue. Please contact your ISP of your office and home, to check the Internet connection stability. You can also try to connect your SBS VPN from another client, does it work fine?
Microsoft CSS Online Newsgroup Support.
But I do not think it is in the ADSL router itself. The SpeedTouch 608 I am using is a router for business market and I verified with the support engineers that it properly implements the GRE 47.
d) Type the fully qualified public domain name (your public DNS name) of your server, click Next, and then click Finish.
We have a tool called PPTPping, it may help you to narrow down the GRE 47 connection issue:
===================================================== This newsgroup only focuses on SBS technical issues. If you have issues regarding other Microsoft products, you'd better post in the corresponding newsgroups so that they can be resolved in an efficient and timely manner. You can locate the newsgroup here: http://www.microsoft.com/communities/newsgroups/en-us/default.aspx.
I appreciate any advice and tools to help investigate this problem.
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Get Secure! - www.microsoft.com/security.
Thank you for posting here.
Thanks and have a nice day!
1. On the XP client computer, open Network Connections.
a) On the Small Business Server 2003-based server, click To Do List in the left pane of the Server Management console.
b) Under Network Tasks, click Configure Remote Access.
If we can not resolve the issue after we perform the above steps, please kindly help me collect some information for further investigation:
Do you get any error messages ? Why have you disabled the firewall on your router ? Are you using Premium with ISA ? Even if you are, it's still a good idea to enable your router firewall (you can never have too much security). Are you using the VPN to administer the server or to access files etc ? Does this issue occur if you connect via RWW ?
Any input or comments in this thread are highly appreciated. =====================================================
Hope these steps will give you some help.
You have to rerun the CEICW to make sure your SBS 2003 server have right network configuration. Go through the follow KB and Rerun CEICW again carefully.
I would like to contact the local MS support (Belgium) if posible. I have this SBS2003 server (Dell PowerEdge 380) since last November; it should be under support from MS.
NOTE: You should stop the Routing and Remote Access service on the RRAS (VPN) server so that PPTPSRV can bind to port 1723.
Note: The VPN server IP is the external IP address of the SBS Server.
Suggestion 4: If I connect with the VPN client locally to the internet gateway (the SpeedTouch 608W) and setup a local VPN connection (the IP of the external connection of the server) as you suggested I see no problems. The VPN is stable for hours (I did not check more).
3. Select Options tab, in the Idle time before hanging up box, select never, and tick the option Redial if line is dropped (if you have this option)
5. Do you get any error when the VPN connection disconnect? Please capture screenshots on the error messages and send the pictures to me at v-***@microsoft.com.
4. Click Ok to finish.
c) Click Next, click Enable Remote Access, click to select the VPN Access check box, and then click Next.
Suggestion 2: Check the Internet network connection stability.
===================================================== This newsgroup only focuses on SBS technical issues. If you have issues regarding other Microsoft products, you'd better post in the corresponding newsgroups so that they can be resolved in an efficient and timely manner. You can locate the newsgroup here: http://www.microsoft.com/communities/newsgroups/en-us/default.aspx.
For urgent issues, you may want to contact Microsoft CSS directly. Please check http://support.microsoft.com for regional support phone numbers.
What I want is to prove them they have a problem. So far the ISP support engineers rejected any problem on their network. I will take this problem with local support from MS and try to prove to the ISP that they have a problem.
Suggestion 3: Yes I used the CEICW on the SBS and I checked the KB and confirm that the VPN is configured properly.
This posting is provided "AS IS" with no warranties, and confers no rights.
Get Secure! - www.microsoft.com/security.
I could be wrong, but the VPN problem does not sound like a Microsoft issue. The implicit question is 'do they often do this?', and the answer is 'no'. A VPN to SBS should stay open for many hours, in use or not.
Microsoft CSS Online Newsgroup Support.
A VPN connection is logged in the System Event log, both when it is opened and closed. Presumably you get no error messages when the connection is lost, but do you get an information message when you actually close the VPN after that?
What I think is happening is that the ISP itself has a problem with GRE 47 on their routers. They do not say it but maybe they prohibit VPN connections for certain types of subscriptions. I am using and ADSL Plus + Business Option (their DHCP always allocates a fix IP for my connection – PPPoE/PPPoA) subscription at belgacom in Belgium for my office connection.
I am connecting to the SBS 2003 R2 server (my office) using PPTP VPN from Win XP (my home PC).
Suggestion 1: Check the VPN client settings.
The VPN consists of two channels, the control channel on TCP port 1723 and the data tunnel using GRE, Generic Routing Encapsulation. It is possible that your TCP channel is staying open, and the GRE path is not. Suspicion in this type of case falls on the router(s). There is a hint or two that Google finds about VPN trouble with this model, but then that's probably true of every router. But a router must keep records which link the two channels together, since it is not actually involved in the PPTP negotiations, and it should close any firewall openings which are not in use. It is possible for a firmware error to close the GRE path after a period of inactivity, without checking whether the TCP/1723 closing handshake has happened. It is even possible that this timeout is deliberate, but that the programmer has left the time delay too short. Again, a firewall hole should not be left open indefinitely if one end of a connection has broken down without being closed properly.
This posting is provided "AS IS" with no warranties, and confers no rights.
For urgent issues, you may want to contact Microsoft CSS directly. Please check http://support.microsoft.com for regional support phone numbers.
Suggestion 1: I checked and the idle time is set to "never"
Manually create a VPN connection on the internal client through the following KB article: How to configure a VPN connection to your corporate network in Windows XP Professional http://support.microsoft.com/? > Note: The VPN server IP is the internal IP address of the SBS Server.
Suggestion 4: If the issue persists, please do the following test to narrow down this issue.
Conclusion: - 1 - I am using SBS2003 standard (no ISA server). - 2 - I have an fix IP address for the office internet connection. - 3 - I use the OWA from multiple locations (PCs) and looks more stable. However I saw that I need to logon again after a greater idle period (15-30 min); and I do not know if this is an internal timeout of OWA for security reason (public PC access). - 4 - I have this issue on multiple PC (all of them XP SP2). - 5 - As I said the VPN does not disconnect. It is just that the communication with the server blocks after some idle period. If I do a continuous ping to the server (ping -t sbs001) the problem disappears.
1. Do you install ISA server 2004 on SBS? Please apply the hotfix KB904825 (http://support.microsoft.com/? > 2. Do you have static IP on your office Internet connection?
Any input or comments in this thread are highly appreciated. =====================================================
1. Run CEICW on SBS.
===================================================== This newsgroup only focuses on SBS technical issues. If you have issues regarding other Microsoft products, you'd better post in the corresponding newsgroups so that they can be resolved in an efficient and timely manner. You can locate the newsgroup here: http://www.microsoft.com/communities/newsgroups/en-us/default.aspx.
Hope these steps will give you some help.
Many thanks for your feedback. Indeed I also suspect the protocol 47 not being properly routed.
The problem is that the VPN does not disconnect. Both ends (client and server) show the connection active. However after some idle period I can not send packets across the connection. A ping to the server would result in "Request timed out".

e) When the wizard is completed, click Close.
Thank you for kind update.
Any input or comments in this thread are highly appreciated. =====================================================
When opening a new thread via the web interface, we recommend you check the "Notify me of replies" box to receive e-mail notifications when there are any updates in your thread. When responding to posts via your newsreader, please "Reply to Group" so that others may learn and benefit from your issue.
NOTE: PPTP Ping tools (Pptpclnt and Pptpsrv) exist in Windows XP support tools.
1. Test the VPN connection from inside of the SBS network, will the problem be reproduced?
4. Does the VPN connection issue happen on all VPN clients?
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