There are a couple of different ways that you can connect these routers.  
But the primary additional security in layering a second device is to have 
some chance of covering you against unintended defects -- and with both made 
by LinkSys, there's a reasonably good chace that a defect in one will also 
apply to the other.  So no additional security worth mentioning.

  There are two basic ways to install your new router:  as a router, or as a 
switch.  The former involves some configuration complexity -- both LinkSys 
routers probably expect to use the same subnet addresses for their WAN 
sides, and you'd need to change at least one of them.
  The switch option is much simpler.  Hook into your new router's 
configuration page, configure its WAN port to get an address via DHCP, and 
disable this router's DHCP service, enable remote configuration, and change 
the LAN address to some bogus value (you won't need that LAN address, since 
if you need to revisit the configuration you can use the DHCP address issued 
to the WAN port).  Hook a Cat5/6 cable from the WAN port to one of the LAN 
ports, and a crossover from another LAN port to a LAN port on the broadband 
router.
  (I've done this very successfully with NetGear 614s.  I tried it with an 
AirLink, but the DHCP service wouldn't turn off.  It should work fine with 
LinkSys gear.)

David Gillett


On 16 Feb 2007 at 12:15, Dean Kukral wrote:

> My current home network has a Wildblue satellite internet service connected 
> to a Linksys Broadband Firewall Router.  There are ethernet connections from 
> it to our two computers (XP and XP Pro) and two dvr's.
> 
> I recently bought an HP dv9260 notebook with an internal wireless G, running 
> Vista Ultimate.  I want to connect this to my network wirelessly, so I 
> purchased a Linksys Wireless - N broadband router.  I also bought a USB card 
> (G) to connect to the dvr and will get another card if the first one will 
> work, thereby eliminating two long cables in the basement.
> 
> I expect this all to work without problem.  :)
> 
> What I am wondering is: if I piggyback my new wireless router on top of the 
> old "firewall" router, will that give any added security to my network?  The 
> satellite internet, while much faster than dialup, is still only 1.5Mbs, 
> which should not be affected by the additional router, I would think.
> 
> 
> TIA,
> 
> Dean Kukral
> 
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