Multiple Routers on Broadband modem

[FireTec]

First, I want to thank all who participate on this web-site. You insight is imeasurable.
I have a site that consist of 2 routers connected to 1 broadband connection. I need to access a video machine from wan that sits on one of the routers. I have port forwarding on the router pointing to the lan ip. How do I set-up the broadband modem to allow the wan access to this port and router? Thank you..

 

[SYQUEST]

Well to start, the broadband device should be completely transparent to all transmissions, unless the ISP or service provider is blocking some items. Since you did not specify any of the hardware you are using, I will generalize.

Depending on who "owns" or "controls" the broadband/DSL device would be one factor in who can set restrictions on your connection or not.

Next, do you have static or dymanic IP address assignments? The WAN side of both routers need their own IP addresses assigned. Besides the requisite port assignments to access the hardware on the LAN side, the capabilities of the routers will be another factor in how this is configured. Some routers have NAT, ACL, RIP, DMZ, and other programmable functions to allow or deny traffic thru the gateway of each router. So at this point you have some fact finding to do and some decisions to make, and/or questions to ask your ISP.

Not all routers are created equal! Usually the more they cost the more features and "stuff" you get.

Hope this helps!

....JIM....

 

[FireTec]

I have 2 Linksys wrt54gs Routers, 1-Speadstream 4200 modem configured as a gateway. The first router is configured as ppoe and retreaves a static from isp. It has 3 ports opened to internal address of 1.2 for wan access to a video recorder. I need to add wireless capabilities for the lobby customers but not allow them to access the first routers lan addresses. Thank you for your responce...John

 

[FireTec]

have 2 Linksys wrt54gs Routers, 1-Speadstream 4200 modem configured as a bridge. The first router is configured as ppoe and retreaves a static from isp. It has 3 ports opened to internal address of 1.2 for wan access to a video recorder. I need to add wireless capabilities for the lobby customers but not allow them to access the first routers lan addresses. Thank you for your responce...John

 

[SYQUEST]

One way to set up the network and keep the "lobby customers" separate would be as follows:

Since the 4200 has only a LAN jack, you need a switch to connect both the WRT54G routers. One router would be config'd for the lobby and the other for your office. The WAN sides of the routers go to the switch and the switch to the 4200. Each router would then handle its respective LAN subnet. As far as IP addressing goes for the WAN - LAN, that would depend on what functions you have setup on the 4200; static or DHCP for its LAN side.

Hope that helps!

....JIM....

 

[FireTec]

I have 1 static ip, tried to use the 4200 to allow access to video, with no sucess. Therefor I put it in bridge mode and used the linksys to get in. What would the IP scheme be then? John

 

[kwing112000]

i dont think you can do it the way SYQUEST told you. You would need more IP's. I am not sure you can do what you want. You need a device that can handle VLANs or something. Or see if you Wireless AP can handle multiple subnets or something.

 

[SYQUEST]

In order to use my design, the 4200 needs to function as DHCP server to the Linksys routers, unless you get more static IPs from the ISP.

What is the video machine? Does it need a firewall?

....JIM....

 

[FireTec]

The video system needs ports 80,554,& 1600 open. I tried using the 4200 but had no success. It seems every time I have that senerio I need to install another router. Thank you!

 

[kwing112000]

Maybe what you could do is use the 4200 as your router. Then put you other 2 devices behind it. THen staticly assign IP's to the routers. Inside IP's. On your 4200 port forward the ports you need to go to each one. Then turn NAT off on the 2 boxes behind the 4200. I think what is happening is you are trying to NAT twice which wont work. Dont use the wan ports on the other 2 devices just use the lan ports. THen you can get the wireless working and still keep them separate from each other. This is all untested but maybe worth a try.

 

[msdonb]

Okay, thanks guys for your insight. This should be simple, but I'm having a brainfart. I have a network currently configured to 192.168.43.xxx with a DHCP server @ 192.168.43.254. I have installed a Linksys WRT54G wireless router and it resides @ 192.168.1.1. I can get internet access using the wired ports, but the wireless users cannot access the internet. Do I need to change the gateway to the 192.168.43.254 DHCP server? Or is there some type of port forwarding/NAT settings that need to be configured? Additionally, is it even POSSIBLE to set up two different subnets to communicate using the same internet connection? I tried disabling the DHCP server on the Linksys (192.168.1.1) router, but the 192.168.43.254 DHCP server won't assign any computers on the 192.168.1.1 subnet an IP address. Help!?!?