Setting up two separate networks on one modem?

[S_F]

I want to setup two separate networks on one modem. I understand that the modem will be connected to router 1's WAN port, and router 2's WAN port will be connected to one of the LAN ports on router 1.

Router 1 will be setup on 192.168.0.1 and router 2 will be setup on 192.168.1.1.

I wanted to know if router 2 will have any settings disabled because router 1 has those settings disabled? For example, if router 1 has upnp off and router 2 has it on, will router 2 not be able to use upnp because it's disabled on router 1?

Essentially I want two separate networks connected on the same modem using two separate routers. I want both networks to have their own settings and not have anything conflicting, such as port forwarding, dns servers, or any other settings.

 

[kanewolf]

If your device has more than one ethernet port is it not just a modem. It is a modem router.

 

[USAFRet]

1. Why? What problem are you trying to solve?

2. Does Router #1 have a guest network? Many do.

 

[jsmithepa]

I
Essentially I want two separate networks connected on the same modem using two separate routers. I want both networks to have their own settings and not have anything conflicting, such as port forwarding, dns servers, or any other settings.

Fine. It will work.

Those settings are configured on the DHCP and each of your routers will have its own DHCP.

The only thing is, subnet1 and subnet2 won't talk to each other.

 

[S_F]

I need two separate networks because I need a separate network configuration than the one that is set up with router 1. I can't change router 1's configuration because a server is running off of it and I need a different configuration, which will prevent the server from working properly. I need router 2 so I can have a separate network with its own settings that won't interfere with any settings on router 1.

 

[bill001g]

You picked the one that you almost can not get to work router behind router....UPnP. Even if you configure it on both routers you will have major problems.

The port forwarding is also controlled on the first router. If it has no ports forward nothing will pass into the network. It would have to be configured to forward the traffic to your second router.

The DNS though you can change but I suspect you want the other feature more which will not work.

You could solve this with vpn but that is a lot of effort and you will have to pay a service for best results.

 

[USAFRet]

I need two separate networks because I need a separate network configuration than the one that is set up with router 1. I can't change router 1's configuration because a server is running off of it and I need a different configuration, which will prevent the server from working properly. I need router 2 so I can have a separate network with its own settings that won't interfere with any settings on router 1.

OK.
Your proposed config should work.

 

[S_F]

You picked the one that you almost can not get to work router behind router....UPnP. Even if you configure it on both routers you will have major problems.

The port forwarding is also controlled on the first router. If it has no ports forward nothing will pass into the network. It would have to be configured to forward the traffic to your second router.

The DNS though you can change but I suspect you want the other feature more which will not work.

You could solve this with vpn but that is a lot of effort and you will have to pay a service for best results.

I simply want router 2 to function as if it's directly connected to the modem. I want to be able to adjust all settings without router 1 limiting router 2's functionality. I already have a vpn that I pay for, but it will complicate things and impact the internet speed; so that's not a good option. Would setting DMZ for router 2 allow me to configure router 2 the way I want? Also, is there any possible solutions without setting up router 2 through DMZ and still getting the results I want? Otherwise, what are some other options I should consider?

Some basic things I want to set up differently than router 1 are:

• 
  ■ DNS (which I know will work regardless)
  ■ Port Forwarding
  ■ UPNP
  ■ Firewall Settings
  ■ Etc.

 

[USAFRet]

Modem->Router 1->Router 2.....

Router 2 is dependent on Router 1.
Port forwarding? It MUST be set on Router 1 to pass through to the rest of the network.
Firewall? A more permissive firewall on Router 2 is still subservient to firewall settings on Router 1.

 

[S_F]

Modem->Router 1->Router 2.....

Router 2 is dependent on Router 1.
Port forwarding? It MUST be set on Router 1 to pass through to the rest of the network.
Firewall? A more permissive firewall on Router 2 is still subservient to firewall settings on Router 1.

Would you know of any other way to setup router 2 to achieve the functionality I want? Thank you.

 

[USAFRet]

Modem->Router 1->Router 2.....

Router 2 is dependent on Router 1.
Port forwarding? It MUST be set on Router 1 to pass through to the rest of the network.
Firewall? A more permissive firewall on Router 2 is still subservient to firewall settings on Router 1.

Would you know of any other way to setup router 2 to achieve the functionality I want? Thank you.

Besides the server on Router 1, what else is running on that?
Is there a DMZ function on that router? If so, put that server in the DMZ, and run everything else off the rest of the router 1.

 

[S_F]

Besides the server on Router 1, what else is running on that?
Is there a DMZ function on that router? If so, put that server in the DMZ, and run everything else off the rest of the router 1.

There is a company server and another server running off router 1. Also, router 1 is being used by too many devices that it slows down sometimes. I wanted to setup router 2 for personal use and have a different configuration on it. Router 1 supports DMZ.

 

[USAFRet]

Well...now this has gotten a LOT more complex.

 

[S_F]

What would you suggest I do?

 

[Brenden3010]

Some ISPs will output two or more WAN IPs from a single modem. Its worth a phone call to find that out. IF they do include atleast two IPs, then plug a switch into the modem, then plug each router into a different port on the switch. Two separate networks, two separate routers with their own rules, two separate outside IPs.

 

[S_F]

Some ISPs will output two or more WAN IPs from a single modem. Its worth a phone call to find that out. IF they do include atleast two IPs, then plug a switch into the modem, then plug each router into a different port on the switch. Two separate networks, two separate routers with their own rules, two separate outside IPs.

That was one solution that I thought I might try, but I'll have to contact Comcast and ask them if they would provide me a second IP with my current package.

Any other ideas? Thanks for the suggestions guys!

EDIT:

After contacting Comcast customer service, I found out that I would need to change my service to a business account that to acquire two ip addresses. Not the ideal option, but may help someone else who is wondering about this.