Do I have a router's LAN IP and my modem's LAN IP?
Do I have a router's LAN IP and my modem's LAN IP?
I am trying to set my LAN IP to be in the range of 192.168.5.0/24 while my Centurylink modem (ZyXEL 2100Z) LAN IP is 192.168.0.1. The reason is for added security, maybe there is a better way? I have a Linksys WRT 32X behind the modem and another router, the ASUS RT N16 connected by ethernet in the garage. I can't get the modem to recognize the Linksys router either in bridged mode or not. I had this working with two Linksys WRT 54g routers in the past. It feels like I'm missing something simple. Am I barking up the wrong tree? Thanks
I'm not sure what you mean when you say "big picture" about this post. In general, the way your whole network connects usually looks like this: your internet connection comes from one place (like coax or fiber), goes through a modem, then to a router with a WAN port. From there, it splits into two main parts: the wired part that goes to computers and other gear, and a wireless part for phones and laptops. Sometimes people put the modem and router on the same box. I'd love to update my picture of your network if you tell me more about what you have.
Basically, just one device (either the modem/router or just the router) needs to turn on and give out IP addresses so everyone else can connect. You shouldn't leave other routers turned on because they would mess up things. I understand that you might want separate groups for different parts of your network, like making sure devices in Group A don't talk to devices in Group B. That sounds right to me? If you want, just change my diagram to fit your actual setup and needs.
That doesn't matter to me because I think it won't affect our safety at all.
It's a DSL line and the modem has DHCP turned off so the router behind it will give out IP addresses. When I set that router to 192.168.5.0, nothing works. The second router doesn't have to do this; all devices in the LAN should just be using 192.168.5.0/24 and can talk to each other. The issue is that the modem doesn't know about the router or the router doesn't see the modem, not sure why. Anyway, the router can't reach the internet.
Which subnet mask or masks are you using? What about trying to use them? If I know what those IP addresses mean then 192.168.5.0 probably isn't in use yet. Or will need a special kind of mask like 255.255.0.0 to work. Please send me a picture showing the modem, all routers, and their IP addresses with the right subnet masks attached. Or a simple drawing of your network that you can put on Imgur (www.imgur.com). Let me know which router is used for giving out internet access. Also, are you trying to add security by splitting them into separate groups? Each group gets its own internet but they cannot see each other?
As talked about before, you need to prove that you have this cable set up correctly and show exactly where the IP addresses are assigned from. Usually, you cannot just turn off the DHCP server on a router and let another "consumer" grade router handle it. The built-in DHCP features in consumer routers often can't assign the gateway (like your internet connection) to point at another device. If you mean you're running a DSL router in bridge mode, things get complicated. Many DSL setups need special settings for the WAN port of the new router. Typically, this involves PPPoE, but it might require specific configurations that you should check on your ISP website or call them to learn about.
So, what are you trying to set the IP address for the Router? Routers send traffic between different parts of their network, like interfaces. In this case, one part (WAN) connects to a modem and should get an internet connection from your ISP via DHCP. The other part (LAN) connects to your internal switch and provides services for your home network. Usually, you set the LAN interface to something like 192.168.1.0/24 so that local devices can talk to each other and get their own internet through the router's built-in DHCP service. It sounds like you want to change the LAN subnet from 192.168.1.0/24 to 192.168.5.0/24, which is doable as long as you find where it is set and just change the number one to a five. Just don't try putting a static IP on the WAN interface; if you do that, your router won't be able to talk to the ISP properly.
Thanks for getting back to me. Sorry it took so long, because of some unexpected medical tests and procedures that kept me busy. Edit: Oops! I forgot to answer your question about my intentions with subnets. My goal and what I thought (Thinkgeek said the same thing) was to change my LAN IP to something like 192.168.5.0 and block random pings from other computers. This makes my boxes look like they aren't there to outsiders. So, I guess that's a subnetb I'm using for sure. Here is how things are set up. ---> shows the ethernet connections Formatting got messed up when I posted this originally. The Linksys router connects to the unmanaged switch via ethernet, and the ASUS also gets connected by ethernet. Both NAS units sit on the switch, which in turn connects through ethernet to the ASUS router that feeds the two computers and all the wireless stuff in the garage. modem LAN port--->Linksys router LAN port--->unmanaged switch --> Asus router LAN port---->computer 1 " -------->NAS #1 "--------> computer two "--------> NAS #2 " ------>various wireless devices Both routers use a subnet mask of 255.255.255.0 - I haven't tried anything else yet. As you can see, I turned off DHCP on the phone company's modem and it's now enabled on the Linksys router. Also, DHCP is turned off on the ASUS router; I guess that only acts as a switch and a wireless access point right now. The computers don't need to talk to each other except for the two connected to the ASUS unit. My belief is that having different LAN IPs on my devices helps keep my house network safe from outside people or detection. Maybe I'm wrong, though, because 192.168.0.1/24 seems just as secure for everyone in the house.
The IP range from 192.168.0.0 up to 192.168.255.255 doesn't go anywhere else, so it's safe and not a problem for security. Just don't try to use it on your router or outside that network.
My internet cable goes from my phone to the router, which then connects to my home network. The setup looks like this:
Modem LAN port -> Linksys router's LAN port. I expect the modem's other side (WAN Port) to connect to the router, and the router uses its LAN ports for everything else.