> My main question is, does having the unsecured wireless router
> connected to my secured wireless router compromise the security?
Security of what? Your house network? The other wifi network? Your
bandwidth? It's not just one question there.
> If so is there a way to isolate the linksys so that it doesn't compromise
> security but can still access the internet?
One idea would be to make sure the BEFW (piece of crap, BTW) is setup as a
router, with it's own NAT translation and DHCP. This way any clients on it
are not going to be 'directly' connected to the rest of the network. All
regular (web, email, etc) services will work fine.
I don't know if that Netgear is smart enough to allow setting up a VLAN or
other routing to isolate the BEFW network from the rest. It may not be.
You'd need that to completely prevent the BEFW devices from even getting a
route into the internal network.
> BTW, it's of no importance for any services like port forwarding or
> anything to successfully work on the unsecured linksys router, just web
> access.
That does make it easier, one less set of thing to configure.
If you 'needed to allow BEFW-connected devices to access your internal
network then you'd be able to do it with a VPN.
-Bill Kearney