This is the part that is not clear. How exactly are the off-the-shelf
devices connected, and what does the routing table look like?
I want to add wireless capability to my existing (wired) LAN. I
already have an off-the-shelf firewall/router (Linksys RV082) which,
of course, is connected to my cable modem. In case it matters, I
should point out that this router has a DMZ port on it.
Now, how to I add to this existing network, something like a Linksys
WRT54G wireless router, or can I? If so,
o How do I physically connect the two routers together, and which
one should be connected to the cable modem? That is, assuming I
leave my existing LAN as is, should the WLAN be attached to one
of the LAN router's ports, or to its DMZ port?
o Do both routers have to be on different subnets? Right now, the LAN
network is at 192.168.7.0. Can the WLAN exist on that network, or
should it be at something like 192.168.8.0? Or...?
o Do I need to set up custom routing tables on one or both routers?
If possible, I would like to be able to get from the WLAN to the
LAN, provided it can be secured. But as long as I can SSH from the
WLAN to the LAN (and vice versa), that's acceptable also.
So, the big question is, can LAN and WLAN broadband routers exist in
the same network topology, and if so, what does that topology look
like? Or, do I need a (more expensive) Access Point instead?
You need to decide if you want your LAN and WLAN on seperate networks or
the same network.
If you want the same network, consider a WAP (Wireless Access Point),
such as the Linksys WAP54G:
http://www.newegg.com/Product/Product.asp?Item=N82E16833124012
Then hook up the devices like this:
BROADBAND <----> Existing Broadband Router <----> PC's
|------> WAP <----> Wireless
connected PC's
Under this configuration, the wireless PC's use the same network
segment, 192.168.7.x, even from DHCP from the wired router.
If you want seperate networks, consider a Wireless Router, such as the
Linksys WRT54G or WRT54GS:
http://www.newegg.com/Product/Product.asp?Item=N82E16833124136
Then hook up the devices like this:
BROADBAND <----> Existing Broadband Router <----> PC's (192.168.7.x)
|------> WRT <----> Wireless
connected PC's (192.168.8.x)
Under this configuration, the wireless PC's use a seperate network
segment, such as 192.168.8.x.
Or you can also run the WLAN with NAT to hide wireless nic addresses.
I don't recommend that.
Also, you do NOT need to use the DMZ port, setup custom routes, etc.
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