[Wiltshire] Is firewall working?

[Lugo Teehalt]

Have just signed on to virginmedia broadband.  Have put in the wireless router myself and switched off wireless - at least the 'radio beakon' icon on the front has gone out.

The router manufactures say: 'By default, the firewall allows any outbound traffic and prohibits any inbound traffic except for
responses to your outbound traffic.'  This is the firewall in the router.

But cannot work out if the firewall is switched on.  Though it seems likely it is on by default.

Anybody know how to check if it is switched on?