01-13-2019 02:47 PM - edited 01-13-2019 02:56 PM
I am fairly new to networking and am currently setting up a lab with a cisco 2611 router and a couple switches. I would like to connect my cisco router to my home router so I can connect my lab network to the internet. I want to go through my home router so in the case that I do take my lab network down I still have internet access through my home router.
I am wondering what my interface configuration should be for the port on my cisco router that will connect to my home router, also if this is even plausible?
01-13-2019 03:18 PM
Hello,
you need to connect your 2611 router to your home router and have the interface on the 2611 get an IP address from the home router via DHCP. You than NAT all your internal networks to that interface. The entire thing would look like this:
interface FastEthernet0/0
description Uplink to Home Router
ip address dhcp
ip nat outside
!
interface FastEthernet0/1
description Local LAN
ip address 192.168.1.1 255.255.255.0
ip nat inside
!
ip nat inside source list 1 interface FastEthernet0/0 overload
!
ip route 0.0.0.0 0.0.0.0 FastEthernet0/0 dhcp
!
access-list 1 permit 192.168.1.0 0.0.0.255
01-13-2019 06:58 PM
07-17-2020 06:34 AM
I just tested this configuration last night ... and with it you can connect directly to your ISPs modem you do not need to connect to your own router if you so choose not to. HOWEVER, this will leave your home network vulnerable so make sure to security harden the router and have a firewall somewhere. Most home routers have a built in firewall. Just FYI for enthusiasts.
11-28-2023 08:01 PM
I recently got to take home a cisco2610 with dual t1 ports. Would this work for me? Could you tell me where to start reading? I would score major points with my professor if I could get this to work. I am trying to get it running at my house with my cox router. he swears it's possible I swear he's messing with me.
01-13-2019 11:10 PM
Adding to other post, all work but you only need to change this IP becuase most of the broaband uses 192.168.1.X, this will cause the issue here.
interface FastEthernet0/1
description Local LAN
ip address 192.168.1.1 255.255.255.0 <<-- change to 10.10.1.1 255.255.255.0 network
ip nat inside
!
access-list 1 permit 192.168.1.0 0.0.0.255 << --- change this IP address based on the above config to match 10.10.10.0 0.0.0.255
04-12-2020 07:24 PM - edited 04-14-2020 07:39 PM
I am sharing a great content which will demonstrate step by step process of Connecting Cisco 2851 Router and Cisco 3560 Switch to ISP Home router and Configuring Cisco Router using Putty and finally Accessing Internet from Laptop and Desktop PC through this network.
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