Hi Wikipedian:

I believe that is the RangeMax wireless router. Good product, IMO.

The strongest encryption which should be supported is WPA2-AES (create a unique long password!)

Contact Netgear directly for the firewall information.

Personally, I would just use NIS 2010 on each system (isn't that why you are here? ).

SPI is Stateful Packet Inspection and NAT is Network Address Translation (leave those turned on).

Here is a decent link that explains the differences.

Cheers!

P.S. Check with Netgear to see if you need a Firmware upgrade (download) for the router to support the latest specs. WPA2-AES may or may not be supported.