Re: Help VPN SBS2k3 error 871 & 800
From: Henry Craven (IUnknown_at_Dot.Nyet)
Date: 10/24/04
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Date: Sun, 24 Oct 2004 10:51:37 +1000
Using a Firewall/Router ?
Error Message: VPN Connection Error 800: Unable to Establish Connection
http://support.microsoft.com/?id=319108
--
Henry Craven {SBS-MVP}
Melbourne Australia
"Simon" <no_spam@evelouise.com> wrote in message
news:417a397e$0$38003$ed2e19e4@ptn-nntp-reader04.plus.net...
> Hi All
>
> I am at my wits end........
>
> I have SBS2k3 running ISA2k SP2
>
> we have 3 XP pro SP2 users wanting VPN & 1 Windows2k SP4 user.
>
> I have run RCW & ICW on the server & isued out the VPN connection
setup onto
> the laptops.
>
> All go's well in the office it connects fine over the LAN.
>
> When thay go home the windows 2k gives error 871 & the XP's give
error800.
>
> In connection manager on the XP mic the CSBS states WAN Miniport
(PPTP)
> ***.***.*.*
>
> & on reading the notes on MS support for SBS2k3
>
>
http://www.microsoft.com/technet/prodtechnol/windowsserver2003/technologies/networking/vpndeplr.mspx
>
> PPTP can be used with a variety of Microsoft clients including Windows
> Server 2003, Windows XP, Windows 2000, Windows NT version 4.0, Windows
> Millennium Edition, and Windows 98. PPTP does not require a
certificate
> infrastructure to issue computer certificates
>
> I have even tryed to change the regedit
>
> To change the IPSec NAT-T behavior for a computer that is running
Windows XP
> SP2, you must create and set the
AssumeUDPEncapsulationContextOnSendRule
> registry value.
>
> Note Before you configure this registry value, we recommend that you
contact
> your network administrator or read your corporate security policy.
>
> To create and configure the AssumeUDPEncapsulationContextOnSendRule
registry
> value, follow these steps: 1. Click Start, click Run, type regedit,
and then
> click OK.
> 2. Locate and then click the following registry subkey:
> HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\IPSec
> 3. On the Edit menu, point to New, and then click DWORD Value.
> 4. In the New Value #1 box, type
> AssumeUDPEncapsulationContextOnSendRule, and then press ENTER.
>
> Important This value name is case-sensitive.
> 5. Right-click AssumeUDPEncapsulationContextOnSendRule, and then
click
> Modify.
> 6. In the Value data box, type one of the following values: . 0
> (default)
> A value of 0 (zero) configures Windows so that it cannot
> establish security associations with servers that are located behind
network
> address translators.
> . 1
> A value of 1 configures Windows so that it can establish
> security associations with servers that are located behind network
address
> translators.
> . 2
> A value of 2 configures Windows so that it can establish
> security associations when both the server and the Windows XP
SP2-based
> client computer are behind network address translators.
>
> Note This configuration exists in the original release
version
> of Windows XP and in Windows XP Service Pack 1 (SP1).
>
> 7.
> 8.
>
>
> And still i get the same error 800 ??????
>
> I have looked to see if the windows 2k laptop and looking at the log
file
> this is what i see
>
> "Business Server Tunnel DeviceName = WAN Miniport (L2TP) TunnelAddress
=
> ***.***.**.*"
>
> What am I doing wrong please...
>
> Simon
>
>
- Next message: Kevin Weilbacher [SBS-MVP]: "Re: what is an efficient and effective real time monitoring anti spyware/anti ad program for sbs2K/2003"
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