Re: URGENT PLEASE RRAS PROBLEM

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Yes, it probably is a GRE problem. The data travelling across a pptp
connection is encrypted and then encapsulated. The encapsulation header is a
modified GRE header. If anything in the path blocks GRE, no data can pass
and the connection fails.

Check the DSL router info for a way to enable GRE. If there is nothing
by name or by protocol number look for things like pptp pass-through or even
vpn pass-through mode.

JMS wrote:
> Hello everyone
> I'm seting up a Windows2003 Sever to allow vpn connections.
> inside my network everything works fine i tested from some pcs and
> they can conect to my server...
> the problem is when i try to connect from internet ...
> when the connection is verifying username and password... after
> several seconds give me the error 721.
> I think the problem is on the router (DSL - AlcatelSpeedtouch 500
> series).
> I have the 1723 port open pointing to my server Ip address
>
> to test proposes I opened the ports 80 and 3389 (web server and
> terminal server) and this services are working fine, i can see the
> web site and I can connect to the server via T.S.
>
> I search on the web and it seams that there is a problem with the
> Protocol - 47 Generic Routing Encapsulation (GRE), I'm a newbie in
> vpn and i don't know how to solve this problem....
>
> My router configuration Ip is 192.168.2.2
> My server configuration Ip is 192.168.2.254 (Only have one nic on the
> server)
>
> I have the ports 1723,80,3389 open on the router pointing to
> 192.168.2.254. The web service and T.S are working fine but vpn isn't.
>
> Another thing in other sites that we have I have linksys routers
> (cable internet) with similar configuration and everything works fine
> I just open the ports 1723 and vpn is working (after the Rras
> configuration on server of course...)
>
> Can anyone help me with this .....
> My Boss wants to kill me I need to make this work...
> Thanks in advance....


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Relevant Pages

  • RE: VPN issue on SBS2003
    ... I understand that you encountered VPN connection issue when you use VPN to ... Internet clients or VPN to external VPN Server from SBS Client computers? ... Configure E-mail and Internet Connection Wizard ... Total GRE packets sent = 1 ...
    (microsoft.public.windows.server.sbs)
  • RE: PPTP VPN connection problems
    ... The problem is that the VPN does not disconnect. ... However after some idle period I can not send packets across the connection. ... A ping to the server would result in "Request timed out". ... If I connect with the VPN client locally to the internet ...
    (microsoft.public.windows.server.sbs)
  • Re: VPN Ports to Open
    ... the VPN connection after you change the firewall before SBS. ... On the server, please stop the Routing and Remote Access service. ... Total GRE packets sent = 1 ...
    (microsoft.public.windows.server.sbs)
  • Re: Windows 2003 VPN Default Gateway Issues
    ... Ethernet adapter Local Area Connection: ... If the VPN server is configured to use a static IP address ... the default gateway on the client is not the problem. ...
    (microsoft.public.windows.server.networking)
  • RE: VPN Connectivity issues through LAN
    ... I understand that you cannot ping SBS after ... you can establish VPN connection from the remote LAN. ... You have to rerun the CEICW to make sure your SBS 2003 server have right ...
    (microsoft.public.windows.server.sbs)