I need to find a hardware firewall that is as small as possible.
The firewall must do NAT.  
It should be smaller than a fist (about 8 cubic inches I suppose). 
Obviously it must be remotely managed (from the inside).


I remember a brochure from a Canadian company about an "inline" device
(it had one upstream port & one downstream port; you plugged it in 
between the computer and the ethernet jack) which had an additional
feature - after n minutes of inactivity, it performed an automatic
hardware disconnect. I don't remember if it met all the requirements
above.

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Clarification of Question by mcwalla-ga on 17 Jun 2004 14:15 PDT

NAT is a requirement. THe Linksys firewall does not appear to do NAT.
The Iappliance looks possible.
Cost is not a problem.

However thank you both.

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Request for Question Clarification by aht-ga on 11 Jul 2004 13:07 PDT

mcwalla-ga:

The device you recall reading about was probably the Alphashield NAAS-01:

http://www.alphashield.com/

http://www.futureshop.ca/catalog/proddetail.asp?logon=&langid=EN&dept=2&WLBS=fsweb7&sku_id=0665000FS10032904&catid=&newdeptid=2

However, it does not support NAT:

http://www.alphashield.com/faqtechnical.htm#Q21

Will the device be used to protect a single IP device, or are you
looking for the NAT to support multiple local devices over a single
external address? In which case, would the device also need to be your
DHCP server?

Regard,

aht-ga
Google Answers Researcher

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Request for Question Clarification by aht-ga on 11 Jul 2004 13:09 PDT

As well, can you say whether the device must support a wired device,
or are wireless routers like the one mentioned in the comments
acceptable?

Regards,

aht-ga
Google Answers Researcher

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Clarification of Question by mcwalla-ga on 11 Jul 2004 15:32 PDT

The firewall must support wired.

I found a reference to what you may want, but I don't think you'll
like the price (~$429+), if you can get it...
http://www.iapplianceweb.com/appreview/security_appliances_32.htm
http://www.innominate.com/pro_mguard_gateway.html

Its dims are 0.8 x 2.4 x 4 inches, which, frankly, I'm pretty sure
isn't easily going to be beat.

Google Search: world's smallest firewall

I am not a Google Answers Researcher.

linksys part number usbvpn1

0.59 x 2.52 x 4.72

http://www.linksys.com/products/product.asp?grid=34&scid=30&prid=543

has statefull inspection, basic content filtering and vpn and draws power from usb

it cost about $100

Netgear has a new "pocket router" available that is smaller than a fist.

http://www.netgear.com/products/prod_details.php?prodID=257&view=