"Darleen" <dkimbrell@sbcglobal.net> wrote in message
news:784a952b-6d92-41e6-b66d-63a491fd50f3@59g2000hsb.googlegroups.com...
>I have a Desktop at my office connected to the Internet via DSL with a
> Static IP address. The modem is connected to a wireless router. We
> have several laptops in the office and they all connect wirelessly to
> this desktop in order to use it's hard drive space, printers, etc...
> This office network is configured using Windows Workgroups and it
> works fine.
>
> I am trying to now connect to our office's network remotely (ie from
> home) and I want to use the Windows XP VPN feature. I've configured
> an Incoming Connection on the desktop according to all the tutorials,
> and setup the usernames and passwords I want to allow in. Then on my
> laptop I've configured a VPN connection to login to the desktop.
>
> Everytime I try to login I get Error 800: unable to establish the VPN
> connection. I temporarily disable every firewall on every connection
> during setup attempts. Norton has been removed. I've even tried
> wiring the laptop directly into the modem to see if the problem was in
> the router, and it still didn't work. I can't figure out what is
> wrong! Can anyone suggest things for me to troubleshoot? I'm a
> novice at IP addresses and this type of networking, so I don't really
> know where to start.
>
> Here are my settings:
>
> Remote connection computers (laptops):
> HP laptops with Windows XP that connect to various ISP's when on the
> road and always with dynamic ISPs
>
> Desktop at office to connect into:
> Windows XP Professional
> Router is Linksys WRT54GS and the Internet type on the router's web
> interface is set to Static IP
> Modem is DSL (cavtel.net, brand Zhone)
> Local IP Address is 192.168.1.1
> Internet IP address is 76.160.85.164 (static IP from our ISP)
> Internet default gateway is 76.160.85.129
> DNS 1 is 64.83.0.10 (have no idea what this is used for)
> DNS 2 is 64.118.139.49 (have no idea what this is used for)
>
>
> My VPN connection on the desktop is set to connect to:
> 76.160.85.129. Is this right? Do we use the gateway IP address here
> or the Internet IP address here? I've tried both actually, neither
> works. And under properties for this VPN connection - I've accepted
> most defaults, including letting TCP/IP obtain IP & DNS
> automatically. Is this right?
>
> I've verified that the password and usernames match between the
> Incoming Connection users specified on the desktop and my laptop VPN
> connection.
>
> Can anyone steer me in the right direction?
>
> Thanks
> Darleen
This may be a problem with port forwarding on the office Linksys router. You
need both TCP Port 1723 (PPTP) and GRE Protocol 47 traffic to pass through
the router. Linksys generally calls that "PPTP Pass Through". Look in the
router config pages. You can test this by running the test detailed in the
"PPTP Ping" and "VPN Traffic" sections on this page...
http://technet.microsoft.com/en-us/l.../bb877965.aspx
If the router does not pass GRE Protocol 47 traffic your options include (in
no particular order)...
* Update the router firmware from the manufacturer to see if that fixes the
issue.
* Replace the router with a router that is known to pass GRE Protocol 47
traffic.
* Flash the router with third-party firmware like DD-WRT that supports PPTP
VPN.
* Purchase a VPN end-point type router that supports PPTP, IPsec/L2TP or SSL
VPN types.
* Use an alternative VPN like OpenVPN, SSL-Explorer or a Secure Shell (SSH)
connection.
To call the VPN server from home, and assuming port forwarding is working
correctly you use the public IP of the router.
--
Al Jarvi (MS-MVP Windows - Desktop User Experience)
Please post *ALL* questions and replies to the news group for the
mutual benefit of all of us...
The MS-MVP Program -
http://mvp.support.microsoft.com
This posting is provided "AS IS" with no warranties, and confers no
rights...
How to ask a question
http://support.microsoft.com/KB/555375
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