I was about to use Cyclone 200 from

But how can this work with BM 3.7 (if at all)?

According to manufacturer http://www.xrio.co.uk/support-int.asp this device
can work with existing Firewalls as per picture
http://www.xrio.co.uk/images/cyclone-firewall1.jpg

But I do not think BM can be setup this way

Can anybody confirm anything?

Seb