Hi Tony,

Very easy - I switched it off!

There is a way to set up the firewall so that it remains in tact whilst letting your MC200 do it's stuff, and this is something I will sort out at a later date, but at the time I just wanted to see whether it worked... and it does. This answered the question of what was causing the trouble in my system, all I need to do now is learn how to reconfigure my BT HomeHub firewall settings.

Hope this helps,
Henry

MC200, MS600, Densen B-250/B-330, Focal 1028Be