Re: Another VPN Issue...Say it aint so...

KG wrote:
[RESPONSE] So let me get this straight...I go into "Routing and Remote Access" go to "NAT/Basic Firewall", right click on the NIC involved with PPTP, click on "Services and Ports." Right now I do not see GRE, therefore I have added GRE with a protocol of 47. Now that I have done that, pptpsrv does not work. Can you be a little more clearer.[END RESPONSE]


You don't *ever* need to mess about with protocols to get PPTP working on SBS.

Is your remote client using a network address different from that of the SBS LAN? At the moment, that looks a good thing to check. If they are not different, then the web-based features of SBS will work but not anything involving routing, such as VPN, which sounds very much like what is happening.

To create a VPN link, TCP/IP routing for port 1723 must be working properly. If it isn't, it can't set up the GRE tunnel.
.

Relevant Pages

  • Re: VPN error 721
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  • Re: Pass GRE (protocol 47) through a Symantec appliance to an SBS server
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    ... Les Connor [SBS MVP] ... Has anyone ever heard of a 'protocol' called GRE that needs to be open as well as all the ports? ... It's not a 'port' but a a 'protocol' that's needed for VPN access. ... I am wondering is there any particular KNOWN issue where RWW won't work with a single NIC installation??? ...
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  • Re: PPTP for SBS 2003
    ... remember specifically where I had to enable GRE. ... client and check whether the network address is the same as the SBS ... I'd suggest making a VPN configuration file on the ... but may not be with Vista. ...
    (microsoft.public.windows.server.sbs)
  • Re: Lan to Lan VPN question
    ... With most Cisco systems its as simple as adding an allow gre statement. ... >> routes are set up linked to these demand-dial interfaces. ... >> VPN link acts as a simple IP router between the two LANs. ...
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