[ALUG] BT Home Hub, port forwarding

[This is not strictly Linux, but I guess it's the sort of thing a number of people on -list may have played with] I was playing with the port forwarding on my BTHH the other day, and noticed something odd. If I forward port 80 from the internet to my Linux box running Apache, when I visit whatever non-RIPE address the HH has at that time (from inside the NAT range), it still presents the HH admin interface, not the Apache files - i.e. the calls aren't being forwarded. Is there a way around this other than running on a port other than 80? Anyone know if it works from the internet proper (still waiting for my BT FON to be enabled)? TIA, Greg