What is the reason for big-endian requirement, you will have hard time finding something that could be called "open platform". Did you look into x86 network appliances? Something like these (other embedded vendors have similar offerings):
http://emea.kontron.com/products/systems+and+platforms/communication+rackmount+servers/ip+network+servers/ip+network+server+nsw1u.html
http://www.msi.com/product/server/#/?sk=Security%20Board
http://www.ibase.com.tw/2009/fwa8207.html
http://www.nexcom.com/Products/network-and-communication-solutions/mainstream-appliance/mainstream-appliance/communication-appliance-nsa-5130

Using the Places Maintenance add-on should be more effective and simpler than installing a separate program (one which installs and sets Chrome as your default browser if you are not careful during installation).