How to setup 2 different networks and routers from one router

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TechFreak2516

TechFreak2516

Honorable
Nov 2, 2013
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So I have comcast and their modem and router combination with one cable to my router (btw it's a big house hence the reason to have multiple networks) and then another wire to my brothers and I changed the subnet from his to 192.168.2.1 and mine to 192.168.5.1 and he main one to 192.168.7.1 and so now I would like to setup my router with a vpn.So the plan...(I do NOT wanna setup another vpn as mine is from my friend and it's awesome which uses on the PC) so anyway,from the main router to instead of my router to my pc.then vpn shared to other network port (I have two) and that one to my router.Whats the correct way to do this without collision or interference?Btw my computer i'd use is windows 7 and a desktop and dedicated to just this then I have all my devices of my own on the vpn.Please respond thanks.Please no suggestions I really would do it like this but better to have the way to do it correct on the pc.So please...no "you'd be better off..." or "you should...."Thanks :)
 
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You don't need multiple networks in one house, you only need multiple access points.
You also do not need a VPN to go from one router to another in the same house. You only need VPN to go across the internet to someone elses network.

An access point is an extension of a router. An access point is on the same subnet as the primary router and the primary router then handles all DHCP, DNS, and outbound/inbound from internet. A router is configured as an access point by disabling DHCP and SPI firewalls, assigning it an IP address that is NOT within the DHCP pool of the primary router, and it to primary router via the LAN port and not the WAN port

Having multiple routers as routers means that you have NAT working at every level and thus...
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boosted1g

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Jun 12, 2013
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You don't need multiple networks in one house, you only need multiple access points.
You also do not need a VPN to go from one router to another in the same house. You only need VPN to go across the internet to someone elses network.

An access point is an extension of a router. An access point is on the same subnet as the primary router and the primary router then handles all DHCP, DNS, and outbound/inbound from internet. A router is configured as an access point by disabling DHCP and SPI firewalls, assigning it an IP address that is NOT within the DHCP pool of the primary router, and it to primary router via the LAN port and not the WAN port

Having multiple routers as routers means that you have NAT working at every level and thus if you have router C connected to router B connected to router A then in order to send VPN or any port forwarded data to router C, you have to configure to allow the traffic at both router B and router A.

Proper Topology:
1) Modem
2) Primary Router
3) Switch (not necessary if the 4 ports on your primary router is sufficient)
4) Ethernet Connected computers and secondary routers (configured as access points)
5) Wireless devices connected to rotuer/access points.

It would be best to either ditch your modem/router and get a separate box or put the modem/router into modem only mode.
The reason for this is because your Comcast router/modem is likely slower and less capable then the rest of the routers you have.
 
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