Question : Cannot connect to SBS 2003 VPN

I have configured my Small Business Server 2003 server for VPN access.  I can
connect to the Remote Web Workplace, and download the Connection Manager.

When I try to use the SBS connection to connect from my home XP Pro computer to
the server , I get this error:

Error 721.  The remote computer did not respond.

I am using a Linksys BEFVP41 router on the server and have ports 1723 and 47
forwarded to the server, TCP and UDP.  I can look at the incoming log on the
router, and see the requests from my home IP, destination port 1723.  I do not
see any outgoing responses from my server to my home IP address.

I am running ZoneAlarm at home, but shutting it down seems to have no effect.

I am an adminstrator for the domain, and can connect with Remote Desktop fine.
I have permissions to connect (as far as I can tell!).  There are no error
messages logged in the event logs that I have found.

What are my next steps to troubleshoot / resolve this issue?  

Answer : Cannot connect to SBS 2003 VPN

Make double sure that you are using the latest firmware on the linksys.