Re: Problems Logon on Ras Server
- From: "Bill Grant" <not.available@online>
- Date: Fri, 8 Apr 2005 09:58:07 +1000
Roberto Fabbri wrote:
> Hi
>
> i have a win 2k SP4 server with ras configured as vpn server.
> This server is connected via DSL to the internet and has
> a private address associated with nat on a public ip address.
> The nat is done on the router.
>
> This server correctly responds to ping from outside the lan.
>
> On my firewall ,I have open ports for PPTP and GRE.
>
> The user id I use to try logon is enabled for dial in connection.
>
> When i try to connect a client using a Dial up or another dsl line
> i get an error (721) after trying authentication.
>
> Is there something else that i must check for ?
>
> Thank you
> Roberto
Certainly sounds like a GRE issue. GRE is not a port. It is an IP
protocol (protocol 47). The data is encrypted then encapsulated with a
modified GRE header. If GRE is blocked (by the DSL NAT device or anything
else in the path), no data is transferred across the link and it closes.
.
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