Accessing AS400 Through Port Redirection

I have a model 150 running v4r5 at home which is connected to my home network.  
I also have a cable broadband connection to my network with a static IP address 
and a Draytek Vigor 2104p router peforming NAT and Port Redirection.

I want to be able to access the AS/400 over the internet, and have set up Port 
Redirection to map a specific port to the AS/400 (for example Port 4000 being 
redirected to the AS/400's port 80).  However, when I try to connect from 
outside of the network I get no response from the AS/400.  Looking at the 
router, I can see that the Port Redirection has generated the correct address 
and port, but the AS/400 doesn't pick it up.

Is there anything that needs to be configured on the AS/400 that I may have 
missed?  I can see web pages from within the network, but not from the outside.

Any suggestions would be most appreciated.

Thanks

Jonathan


Jonathan Mason
www.astradyne-uk.com