Re: Routing And Remote Access Server

GRE is protocol 47, not port 47. Does your firewall have a setting called
something like "Allow PPTP Pass-through" or anything similar? Opening port
47 won't do it.


"David Parkes" <wibble@xxxxxxxxxx> wrote in message
news:emcJbibfGHA.1520@xxxxxxxxxxxxxxxxxxxxxxx
I am having some difficulty setting VPN access up. It will actually connect
but fail on verifying username and password. It comes up with the error
721. If you look in the event viewer you get this message;



A connection between the VPN server and the VPN client Our (Firewall
Address)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.

I have never had any problems with connecting to other sites it is just
this one. Where this particular RRAS server is. I have forwarded port 1723
to the RRAS Server and also allowed port 47 through the firewall.

Any thoughts? Thanks




.

Relevant Pages

  • Re: Error 720 connecting to server via VPN
    ... Actually I've just tired that firewall rules and it didn't work. ... VPN client is not configured to allow Generic Routing Encapsulation (GRE) ... Should I setup a firewall rules to allow port 47? ... Port 1723 is allowed in my router for any WAN users to the server. ...
    (microsoft.public.windows.server.sbs)
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    ... The problem I have is that I cannot redirect port 500 through my firewall. ... 2-my home client will connect L2TP fine, IF I connect a PPTP tunnel first. ... > This filter allows Internet Key Exchange traffic to the VPN server. ...
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  • Re: VPN Problem Ereignis 20209
    ... Pruefe doch mal deine Firewall, ob die Generic Routing Encapsulation (GRE) ... packets blockt. ... A connection between the VPN server and the VPN client has been ...
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  • Re: Trying to Setup VPN on W2K Server
    ... through the firewall (Linksys Router) is another. ... 47 is a protocol number and not TCP port. ... It'll make a big difference when configuring your firewall or router. ... >> to allow traffic only for pptp or l2tp to enter the VPN server. ...
    (microsoft.public.win2000.networking)
  • Re: VPN wird geblockt
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