I've recently installed a Draytek 2820n router and am trying to set up a 
VPN connection. In fact I *have* set one up but there is one little 
problem, a firewall problem.

My home network consists of a couple of printers, an NAS and three 
computers running XP. I have two roving computers, one is a laptop 
running Vista and the other is a netbook running XP. The Vista laptop 
can dial in (using 3G) to the VPN with no problem at all. It all works. 
I can access all the computers on the LAN

The problem is with the netbook running XP. I can get the Draytek to 
assign an IP address on the local network. I can ping all the computers. 
I can access web-based pages on the printers and the NAS. What I cannot 
do is to access the XP computers on the LAN *unless* I take the firewall 
down on the netbook. I've tried to discover if it's a port on the 
netbook XP blocking  communication without success. I set up the VPN 
connection using the XP wizard which should have taken care of 
everything.

The mysterious thing is that the Vista laptop works *with* the firewall 
active. The XP netbook works only with the firewall de-activated. I've 
googled for help but no-one else seems to have had this problem. Does 
anyone here know what I should look for?

Thanks in advance, David

-- 
David Rance        writing from Caversham, Reading, UK
http://rance.org.uk