Re: VPN & ADSL

  • From: "Wendell W. Pinegar" <Wendell@xxxxxxxxxxxxxxx>
  • To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
  • Date: Tue, 18 Dec 2001 20:56:49 -0600

Have you tried disabling routing and remote access and re-enable it?
  ----- Original Message ----- 
  From: Belinda Metcalf 
  To: [ISAserver.org Discussion List] 
  Sent: Tuesday, December 18, 2001 6:19 PM
  Subject: [isalist] Re: VPN & ADSL


  http://www.ISAserver.org


  Yes I have previously had a VPN connection working on this server but using a 
56k modem instead of the ADSL.

  It has the Allow L2TP and PPTP protocols setup using the ISA VPN Wizard.

   

  Belinda

   

  -----Original Message-----
  From: Wendell W. Pinegar [mailto:Wendell@xxxxxxxxxxxxxxx] 
  Sent: Wednesday, 19 December 2001 11:16 AM
  To: [ISAserver.org Discussion List]
  Subject: [isalist] Re: VPN & ADSL

   

  http://www.ISAserver.org

  Did you use the Local ISA Server VPN Wizard to setup ALLOW packet filters for 
the L2TP and PPTP protocols?  Sounds like packet filtering is preventing the 
VPN connection from going through.

    ----- Original Message ----- 

    From: Belinda Metcalf 

    To: [ISAserver.org Discussion List] 

    Sent: Tuesday, December 18, 2001 4:40 PM

    Subject: [isalist] VPN & ADSL

     

    http://www.ISAserver.org

    I have the following issues with a VPN & ADSL connection..

     

    I have setup a DLINK ADSL Router Modem on our main network. We have 
internet and email access without problems.

    The DLINK ADSL Router is connected directly to the network switch.

    Previously we were using a 56k modem and were able to use a VPN connection 
to the network.

     

    The VPN client which requires network access from a 2nd location has a 
Alcatel Home Modem setup and has internet access.

     

    When I attempt to make the VPN connection to the server via it's external 
Ip address I got an error saying no machine certificate was available.

     

    So.. I installed CS and a user certificate on the client

     

    Tried the connection again and then got as far as the Verifying Username 
and Password part, the connection then drops and says The destination computer 
is not responding.


    So.. upon advice from the ISA server newsgroup on the Microsoft website I 
enabled "Enable PPTP through the Firewall" and "Enable IP routing" packet 
filters.

    I also noticed that in the Server Publishing Rules on the ISA Management 
console the "External IP address" is still set as our previous permanent IP 
being used with the 56k modem. I attempted to change this to our new IP address 
but it said The Ip address is not in the external IP address array.

     

    Does anyone have any ideas on this apart from installing a second network 
adapter on the ISA server and using via the network adapter (Microsoft 
Technical Recommendation)??

     

    Help would be really appreciated.

     

    Regards,

    Belinda

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