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Cannot connect via a VPN

By andy ·
I cannot connect clients to the network through a VPN setup. Here are the details of the network configuration:

HP Netserver (standard equipment) running NT 4.0 with SP6a. It is the PDC. It has one NIC (Intel); Class C IP address(192.168.254.1); running IP & NetBUEI protocols. RAS installed and configured to answer only. PPTP set up with 5 connections.

There are 4 WIN95 PC's on the network. IP addresses are assigned by DHCP server (see below).

Everything is connected thru a standard unmanaged 8 port hub.

The DSL Router is a FlowPoint 255 connected to the hub and the Internet; External IP is fixed and internal IP is 192.168.254.254. It is set up as the DHCP server and clients on the network function properly (and successfully connect to the internet).

The router is configured to pass packets that match the profile Protocol TCP port 1732 or Protocol #47 (GRE) on all ports, thru the router to the internal IP address of the NT server.

The remote client (a WIN98 PC) is trying to conn

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Cannot connect via a VPN

by tysonmathews In reply to Cannot connect via a VPN

If I am not mistaken, Service pack 6a is in lacking of encryptiion and therefore not allowing the log in. I encourage you to re download the correct version of service pack. Check the details on the SP6 download before installing. Be sure it is capable of the encyption need to run PPTP.

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Cannot connect via a VPN

by andy In reply to Cannot connect via a VPN

From all I've read and everyone I've talked to, SP6a is a clean SP.

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Cannot connect via a VPN

by gbainbridge In reply to Cannot connect via a VPN

Try downloading the update to RAS, RRAS (Routing and Remote Access Service). It's a free download from Microsoft, and is easy to install and configure.

I can't guarantee it will solve your problem, but it helps to be running the most current software.

Hope this helps.

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Cannot connect via a VPN

by andy In reply to Cannot connect via a VPN

Tried it. Did nothing.

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Cannot connect via a VPN

by tkitchen In reply to Cannot connect via a VPN

Hi! Microsoft's VPN technology is frustrating, but I have a few suggestions:

1. When your VPN client connects, it must get an IP via DHCP from the NTServer, not the Flow point. You can use the Flowpoint's DHCP for internal systems, but not for the VPN Clients. You must either run DHCP service on your HPNetserver, or use fixed IP's on your VPN clients.
2. Make sure that your client is running the same encryption as the server (40 or 128 bit.)
3. Make sure that the client machine is not logged into any other domain before connecting. [Client shouldn't log into any domain or Microsoft network until VPN connection is established]
4. Enable NetBEUI on the client and NTbox, as the VPN can encapsulate this, eliminating problems related to IP address assignment on the VPN connection.
5. Isolate the problem to transport or applications layer. Can the remote client ping your 192.168.254.254? Can it ping 192.168.254.1? [Ping only works before VPN connection is established.] If so, transport layer is working,

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Cannot connect via a VPN

by andy In reply to Cannot connect via a VPN

Did all these, but still didn't do the trick. I suspect the router isn't configured properly. Need to go back to the router mfr.

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Cannot connect via a VPN

by andy In reply to Cannot connect via a VPN

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