VPN error 720 when connecting to remote server

I just took over a Small Business Server 2003 Premium Edition. The server is
configured with two NICs. Both being used. One connected with ISP and the
other connected to LAN.
There is ISA installed and used To Do list to reconfigure the remote access
. I downloaded the connection manager to my computer and tried to connect
using it. I get the following error information from the connection manager:

A connection to the remote computer could not be established. You might
need to change the network settings for this connection. For further
assistance, click More Info or search Help and Support Center for this error
number. (Error 720) For customized troubleshooting information for this
connection, click Help.

I have logged to the SBS server via RWW and used the ISA Best Practice
Analyzer and it shows the following:

The VPN connection failure warning was signaled 78 times:

Events that triggered the alert:

5/12/2008 4:54:55 PM - The VPN connection attempt by user wmontgomery from
VPN client IP address 192.168.16.15 could not be established.
The failure is due to error: 0xc004000c

I need to get this server up and running. what would be the best
troubleshooting steps.

--
Jairo F McNally

Larry
Wed May 14 19:47:06 PDT 2008

One has to ask what you intend to use the VPN for? It is a possible
security leak and RWW is intended to replace it.


Having said that, I would start with the SBSBPA and fix whatever it finds.

www.sbsbpa.com

Then verify that the router will pass 1723 to the external nic, and that it
is passing GRE 47

Also, you want to make sure that the ip numbers on the remote and the lan
are in different subnets, that is:

192.168.16.x = internal SBS
192.168.10.x = external SBS and router LAN side
172.168.12.x = remote network subnet.

As long as the first three numbers are not all the same, the subnets are
different.

Is there any chance that the ISP is blocking?

Any errors in the event logs in addition to the one in the ISA log?

--
Larry

Please post the resolution to
your issue so that all can benefit.


"JMcNally" <JMcNally@discussions.microsoft.com> wrote in message
news:9498AC27-A0B2-46FA-96B9-DC4C18EC9EBF@microsoft.com...
>I just took over a Small Business Server 2003 Premium Edition. The server
>is
> configured with two NICs. Both being used. One connected with ISP and
> the
> other connected to LAN.
> There is ISA installed and used To Do list to reconfigure the remote
> access
> . I downloaded the connection manager to my computer and tried to connect
> using it. I get the following error information from the connection
> manager:
>
> A connection to the remote computer could not be established. You might
> need to change the network settings for this connection. For further
> assistance, click More Info or search Help and Support Center for this
> error
> number. (Error 720) For customized troubleshooting information for this
> connection, click Help.
>
> I have logged to the SBS server via RWW and used the ISA Best Practice
> Analyzer and it shows the following:
>
> The VPN connection failure warning was signaled 78 times:
>
> Events that triggered the alert:
>
> 5/12/2008 4:54:55 PM - The VPN connection attempt by user wmontgomery from
> VPN client IP address 192.168.16.15 could not be established.
> The failure is due to error: 0xc004000c
>
> I need to get this server up and running. what would be the best
> troubleshooting steps.
>
> --
> Jairo F McNally
>

JMcNally
Thu May 15 02:26:02 PDT 2008

Larry,

Thank you for the response but it has been already fixed. The issue was
related to not having the RADIUS enabled.
--
Jairo F McNally



"Larry Struckmeyer [SBS-MVP]" wrote:

> One has to ask what you intend to use the VPN for? It is a possible
> security leak and RWW is intended to replace it.
>
>
> Having said that, I would start with the SBSBPA and fix whatever it finds.
>
> www.sbsbpa.com
>
> Then verify that the router will pass 1723 to the external nic, and that it
> is passing GRE 47
>
> Also, you want to make sure that the ip numbers on the remote and the lan
> are in different subnets, that is:
>
> 192.168.16.x = internal SBS
> 192.168.10.x = external SBS and router LAN side
> 172.168.12.x = remote network subnet.
>
> As long as the first three numbers are not all the same, the subnets are
> different.
>
> Is there any chance that the ISP is blocking?
>
> Any errors in the event logs in addition to the one in the ISA log?
>
> --
> Larry
>
> Please post the resolution to
> your issue so that all can benefit.
>
>
> "JMcNally" <JMcNally@discussions.microsoft.com> wrote in message
> news:9498AC27-A0B2-46FA-96B9-DC4C18EC9EBF@microsoft.com...
> >I just took over a Small Business Server 2003 Premium Edition. The server
> >is
> > configured with two NICs. Both being used. One connected with ISP and
> > the
> > other connected to LAN.
> > There is ISA installed and used To Do list to reconfigure the remote
> > access
> > . I downloaded the connection manager to my computer and tried to connect
> > using it. I get the following error information from the connection
> > manager:
> >
> > A connection to the remote computer could not be established. You might
> > need to change the network settings for this connection. For further
> > assistance, click More Info or search Help and Support Center for this
> > error
> > number. (Error 720) For customized troubleshooting information for this
> > connection, click Help.
> >
> > I have logged to the SBS server via RWW and used the ISA Best Practice
> > Analyzer and it shows the following:
> >
> > The VPN connection failure warning was signaled 78 times:
> >
> > Events that triggered the alert:
> >
> > 5/12/2008 4:54:55 PM - The VPN connection attempt by user wmontgomery from
> > VPN client IP address 192.168.16.15 could not be established.
> > The failure is due to error: 0xc004000c
> >
> > I need to get this server up and running. what would be the best
> > troubleshooting steps.
> >
> > --
> > Jairo F McNally
> >
>
>
>