Problems with stunnel and router???

I have an ADSL router forwarding traffic from the internet to my local 
machine 192.168.0.2 and on this machine I am running stunnel and apache 
2.0.48 (I want this so I can run subversion version control and could 
only find ssl for apache 1.x). Also I want to tunnel other services.

My stunnel.conf is as below. I have made client and server certificates 
and want to certify clients when they connect. I have installed the .p12 
into my browser (mozilla), however, I seem unable to connect to the 
tunnel through the router. If I browse https://192.168.0.2 it all works 
fine. However, if I use my external IP of my router or its dyndns.org 
entry it doesn't. My other services seem to work ok. Have I messed 
something up? I am running Apache listening on 192.168.0.2 and have not 
forwarded it at the router to prevent unauthorized access. But stunnel 
doesn't show any access attempts from external IPs, and refuses to allow 
connections from outside the internal net.

Does anyone know what could be wrong here???

Many Thanks.

Jon Wilson

CAfile = ca/ca_cert.pem
Cert = server_cert.pem
output = server.log
verify = 2
client = no
debug = debug
[stunnel]
accept=443
connect=80