I've stripped this down to it's bare minimum in order to try and get this working with no luck. Hopefully someone on here will be able to point me in the right direction.

I have a Vigor 3300V (latest firmware)

WAN1 is the only connection (WAN2 and 3 were connected, but in trying to troubleshoot my issue I disconnected them and reset the config on the router)

I have set up a simple web server on VLAN1.

Browsing to the web server (external IP) from the outside world works just fine.

Browsing the external IP from inside VLAN1 fails - times out.

I can successfully ping the external IP from inside VLAN1.

Any help appreciated before I go totally mad.

Thanks,

Alex.