RE: VPN Error 800
- From: v-edtian@xxxxxxxxxxxxxxxxxxxx (Edward Tian)
- Date: Fri, 21 Oct 2005 07:27:27 GMT
Dear Adalberto:
Thank you for posting here.
>From the description, I understand that the remote clients can not
establish the VPN connection to the SBS Server and you received an error
800 message. If I have misunderstood your concern, please do let me know.
You mentioned that "when I tried to connect the VPN I've got and error 800.
the same with or without firewall." What do you mean by "firewall", can I
assume it's the ISA Server 2000/2004 or the hardware router? Please kindly
correct me if my understanding is wrong.
Before we go any further, I would like to suggest you re-configure the VPN
connection.
First, please re-run the CEICW Wizard, open Server Management console,
navigate to 'To Do List' and click 'Connect to the internet' in the right
panel. The wizard will help us automatically configure the internet
connection. You may refer to this step-by-step article to complete the
setup:
825763 How to configure Internet access in Windows Small Business Server
2003
http://support.microsoft.com/?id=825763
Then, please run the "Remote Access Wizard" to enable the VPN Server
feature:
1. On the SBS server, click To Do List in the left pane of the Server
Management console.
2. Under Network Tasks, click Configure Remote Access.
3. Click Next, click Enable Remote Access, click to select the VPN Access
check box, and then click Next.
4. Type the fully qualified public domain name (FQDN) of your server, click
Next, and then click Finish. (If you don't have a public FQDN, please
replace it with your public IP address)
5. When the wizard is completed, click Close.
After doing that, go to an internal client and establish the VPN connection
to the SBS Server, you can refer to this KB article for more information:
How to configure a VPN connection to your corporate network in Windows XP
Professional
http://support.microsoft.com/default.aspx?scid=KB;EN-US;305550
Will you be able to establish the VPN connection to the SBS Server
successfully? If the VPN is working fine, it appears that the problem
doesn't reside at the SBS side. We may need to perform a further
investigation.
Based on my experience, error 800 is caused by a router that has outdated
firmware in some cases. Please check this KB article to see if your
hardware router has applied the latest firmware. You may contact the vendor
of the hardware router for more detailed information.
Error Message: VPN Connection Error 800: Unable to Establish Connection
http://support.microsoft.com/default.aspx?scid=kb;EN-US;Q319108
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.
Provide me with the output for reference.
NOTE: PPTP Ping tools (Pptpclnt and Pptpsrv) exist in Windows XP support
tools. For your convenience, I have attached the file within this reply.
NOTE: You should stop the Routing and Remote Access service on the RRAS
(VPN) server so that PPTPSRV can bind to port 1723
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.
In addition, I would like to ask some additional questions:
1. Does this problem occur on all the remote clients?
2. When did the problem occur? Did the VPN connection ever work before? If
so, what changes have been made to the SBS Server?
3. Have you installed ISA on the SBS Server? If so, which version is the
ISA Server?
4. How many NIC does your SBS Server have?
Hope the above information helps. Please feel free to let me know if there
is anything I can do for you.
Have a nice weekend! :)
Best Regards
Edward Tian(MSFT)
Microsoft CSS Online Newsgroup Support
Get Secure! - www.microsoft.com/security
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--------------------
| From: "Adalberto Cañadas Jr" <adal@xxxxxxxxxxx>
| Subject: VPN Error 800
| Date: Fri, 21 Oct 2005 01:54:44 +0200
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| Hi, I've got an SBS 2003 SP1, with RRAS and remote acces enabled, but
when I
| tried to connect the VPN I've got and error 800.
| the same with or without firewall.
|
| ¿?
|
| Thanks in advance...
| Adalberto Cañadas
|
|
|
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