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Network IP configuration question

D

dxkj

Lifer
I have a cable modem hooked up to a 10 port hub. I then have 3 computers hooked up to the hub. They each get their own IP address.

*step forward*

I now have the same cable modem hooked up to a Wireless MR814 Netgear router, and then those 3 computers connected through it. Now these computers all have "fake" IP addresses such as 192.18.0.etc.


How do I get these computers to have an IP address again? I know I can route packets through the Router which has an IP address, but I want these to each have their own IP addy. Or is that impossible with using a router?

Thanks
 
Originally posted by: dxkj:

I have a cable modem hooked up to a 10 port hub. I then have 3 computers hooked up to the hub. They each get their own IP address.
Click to expand...
  • i.e. You're paying your ISP for three separate addresses?
  • You did realize that you were effectively networked with all the other cable modem subscribers in your neighborhood?
I now have the same cable modem hooked up to a Wireless MR814 Netgear router, and then those 3 computers connected through it. Now these computers all have "fake" IP addresses such as 192.18.0.etc.

How do I get these computers to have an IP address again?
Click to expand...
  • Disable the DHCP Server function in the Router.
  • Plug the cable modem into a LAN port; not the WAN port.
  • You'll effectively have what you had before - 3 PCs on a hub/switch with no firewall
OR
  • Enable the DHCP Server function in the Router.
  • Plug the cable modem into the WAN port; not a LAN port.
  • Call your cable company and cancel 2 IPs (and save some money)
  • Surf on (with up to 253 PCs) on 1 IP behind the Router's firewall
Thanks
Click to expand...
You're welcome... 😉

 
Originally posted by: ClearToLand
Originally posted by: dxkj:

I have a cable modem hooked up to a 10 port hub. I then have 3 computers hooked up to the hub. They each get their own IP address.
Click to expand...
  • i.e. You're paying your ISP for three separate addresses?
  • ----Nope, but they are assigning them to me arent they?
  • You did realize that you were effectively networked with all the other cable modem subscribers in your neighborhood?
  • -----Can you explain "effectively networked with all the other cable modem subscribers in neighborhood?
I now have the same cable modem hooked up to a Wireless MR814 Netgear router, and then those 3 computers connected through it. Now these computers all have "fake" IP addresses such as 192.18.0.etc.

How do I get these computers to have an IP address again?
Click to expand...
  • Disable the DHCP Server function in the Router.
  • Plug the cable modem into a LAN port; not the WAN port.
  • You'll effectively have what you had before - 3 PCs on a hub/switch with no firewall
OR
  • Enable the DHCP Server function in the Router.
  • Plug the cable modem into the WAN port; not a LAN port.
  • Call your cable company and cancel 2 IPs (and save some money)
  • Surf on (with up to 253 PCs) on 1 IP behind the Router's firewall
Thanks
Click to expand...
You're welcome... 😉
Click to expand...



Thanks! you cleared up a bit for me.
 
Originally posted by: dxkj:
  • You did realize that you were effectively networked with all the other cable modem subscribers in your neighborhood?
  • -----Can you explain "effectively networked with all the other cable modem subscribers in neighborhood?
Click to expand...
Imagine a BIG multi-port hub/switch in a cable modem company building "somewhere" nearby. When you connect a PC to a cable modem without a firewall, it's just like plugging directly into that hub/switch alongside the cables from the other cable modem subscribers in your neighborhood. If you enable File or Printer Sharing on your PC, and bind TCP/IP to it, your shares will appear on everyone's Network Neighborhood.
 
turn off the dhcp as mentioned.

that alone might do it.

See if you can turn the wireless router into bridge mode, becasue that seems to be what you want it to do as you dont seem to want any routing done, jsut wireless access.




make sure to put on some software firewall and goot AV programs as you will be exposed on each computer hooked into your network.


unless you actually NEED the unique IPs for each computer, youd be best hiding behind the router with its firewall.
 
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