pptp connects first time only - error after disconnect try again

From: scott (scottscottland_at_yahoo.com)
Date: 02/09/04 

Date: Mon, 9 Feb 2004 15:12:19 -0000

Hi,

I can establish a PPTP connection from a win2ksp3 clinet to win2ksp3
advanced server first time. Upon disconnecting and attempting a connection
again i get error 721.

(NOTE: both were on SP4 before I rolled them back to SP3 following this
problem).

I applied the registy fix metioned in knowledgebase articles:

271731 PPTP clients cannot connect to a PPTP server that has multiple IP
http://support.microsoft.com/?id=271731

810839 VPN Client Cannot Establish a Connection After You Install a Service
Pack
http://support.microsoft.com/?id=810839

(NOTE: this fix suggested adding the ValidateAddress DWORD value and setting
to "0" which is off)

If I leave the machines for a few days and attempt the connection again its
ok. As suggested above, after disconnecting again and attempting to connect
again i get error 721 (or error 650 on win98se).

I attempted to restart all machine involved but this does not help.

There is a firewall between the clinet and server. When attemping a
connection within the firewall its always ok (from XPsp1)

Can someone please help ? Is this some sort of routing problem with the
firewall ?

PPTP 1723 and GRE protocol 47 (NOT PORT 47) are allowed to pass via the
firewall.

Thanks for any help.
Scott.

Relevant Pages

  • Re: More on Remote Desktop
    ... Chances are good, though, that he's already got VPN capabilities on his ... firewall to do it for $100. ... > server at home...or purchase additional/new hardware... ... >> my firewall makes the PPPoE connection to my ADSL ISP. ...
    (microsoft.public.windowsxp.network_web)
  • Re: More on Remote Desktop
    ... on your firewall to the world, you will almost certainly get hacked. ... between your clients and server on your own LAN. ... your laptop into that LAN server has got to be making these two public IP's ... PPPoE connection to my ADSL ISP. ...
    (microsoft.public.windowsxp.network_web)
  • Re: More on Remote Desktop
    ... Also note that if you use the default listening port for Remote Desktop there is no need to append ... >> point it to the Static IP of the internal server. ... >> firewall to get between your clients and server on your own LAN. ... >> mine setup so that my firewall makes the PPPoE connection to my ADSL ISP. ...
    (microsoft.public.windowsxp.network_web)
  • Re: VPN Disconnects
    ... Microsoft Windows 2000 Advanced Server ... A demand-dial Point-to-Point Tunneling Protocol (PPTP) connection between ... does not match the remote server's Demand-Dial interface. ...
    (microsoft.public.isa.vpn)
  • Re: Defeating Firewalls: Sneaking Into Office Computers From Home
    ... > about security and network policies. ... desktop with a PPTP Connection icon and a Remote Desktop Icon. ... connection, they click the PPTP Icon, enter a user/password that is NOT ... If they authenticate with the firewall properly they double click the RD ...
    (comp.security.firewalls)