Re: VPN Problem Ereignis 20209

Hallo Gernot,

die Infos zu deinem Fehler sind zwar ziemlich duenn, aber vielleicht hilft
das ja schon.
Pruefe doch mal deine Firewall, ob die Generic Routing Encapsulation (GRE)
packets (protocol 47) blockt.
Laeuft bei dir eine Blackberry oder sowas?

Event ID: 20209 BlackBerry Dispatcher

A connection between the VPN server and the VPN client <ip> has been
established, but the VPN connection cannot be completed. The most common
cause for this is that a firewall or router between the VPN server and the
VPN client is not configured to allow Generic Routing Encapsulation (GRE)
packets (protocol 47). Verify that the firewalls and routers between your
VPN server and the Internet allow GRE packets. Make sure the firewalls and
routers on the user's network are also configured to allow GRE packets. If
the problem persists, have the user contact the Internet service provider
(ISP) to determine whether the ISP might be blocking GRE packets.

Beste Grüsse

BaMu


.

Relevant Pages

  • Re: VPN issues
    ... "PPTP Passthru" is the same as allowing GRE. ... packets. ... Merely exiting the GUI will not disable the firewall engine. ...
    (microsoft.public.windowsxp.work_remotely)
  • Re: Routing And Remote Access Server
    ... GRE is protocol 47, not port 47. ... A connection between the VPN server and the VPN client Our (Firewall ... VPN server and the VPN client is not configured to allow Generic Routing ...
    (microsoft.public.windows.server.sbs)
  • RE: VPN
    ... Can you telnet to port 1723 on your server from outside the firewall? ... passthrough and will route GRE 47 packets fine, ... Small Business Server ...
    (microsoft.public.windows.server.sbs)
  • Re: Ports required for remote hosts wishing to establish PPTP VPN.
    ... encrypted data uses a packet with a GRE header. ... > 47 has to be enabled for my VPN server's IP on the remote site's firewall ... > out) needs to be allowed on their firewall to my VPN server? ...
    (microsoft.public.win2000.ras_routing)
  • Re: Can Windows Firewall be Configured to Allow Protocol 47 (GRE)?
    ... If these packets were being dropped they'd show up in the log, ... > Using the Add Connection wizard I am allowing incoming VPN connections ... > The VPN connection works as expected when firewall is off ... > through but the GRE packets are not. ...
    (microsoft.public.security)