Sophos Web Appliance connection in bridge (Inline) mode

This is the kind of network plan i want to achieve.

The WAN port of the SWA(2) is connected to the perimeter firewall (3) and the LAN port of the SWA(2) is connected to the LAN switch (5).

How do i  bridge or direct all traffic coming from the LAN port of the SWA to the WAN port of the SWA or what configuration should i do to achieve this..

Also, apart from the config port, i want to be able to monitor and configure the SWA from my desk (LAN). How do i configure that.

NB:

The LAN IP range is 192.168.10.0/24 

My computer IP is 192.168.10.10/24

The WAN IP is 10.10.0.0/30 -------- The WAN interface IP is 10.10.0.2/24

Awaiting kind responses.