Need help setting up 5 computers with 2 IP's ???

[dvanderkodde]

Hi I currently have the Linksys BEFSR41 - EtherFast 4-Port Cable/DSL Router. I have 5 machines, and what I would like to do is have one of those machines get one Internet IP address, then have the rest of the 4 computers share a different internet IP address. What I would like to know is if this router can do 2 different internet IP addresses at the same time and if i can forward one of the ip addresses to a local ip/computer and the rest will use the second internet IP address. Or would I need to get another switch/hub and do some uplinking tricks to be able to do this. And I can only get 2 extra IP addresses. If you need more information or have a question just ask...

Here is a drawing I made of what i just said
Click Here for Layout

Thanks,
Darren

 

[bex0rs]

The easiest (an cheapeast) way would be plug your modem, the computer you want with its own IP, and the router into a small hub / switch. However, you'll face the issue of having your computers on different networks, which may or may not be a bad thing depending on what you plan to do. Of course, you could always put a second NIC in the computer with the public IP to get it connected to your private LAN as well for file sharing, etc. The other relatively cheap option would be to buy a second Cable / DSL router to use just for the second computer, and then connect the routers.

~bex0rs

 

[bex0rs]

I should probably clarify that last option.

Modem and both routers get plugged into a hub / switch. (You'll need a small hub / switch in either case.)

4 of your computers have their default gateway set to router #1 and the last one has its gateway set to be router #2. If you want, you can have all of your computers on the same subnet so that they can share files, etc. but still have them go through the router of your choice. What I meant by connecting the routers was to run a crossover from an internal port on one to an internal port on the other (as opposed to "cascading" them).

~bex0rs

 

[dvanderkodde]

Is there a way i could find a switch/hub with like 2 uplinks? Then, could I plug the cable modem into the uplink of a switch/hub (in which i could then connect the computer i want to have its own Internet IP address into a port on the switch), and then if the switch/hub has another uplink, patch a cord from the second uplink to the router to get a ip for the router. Would this be possible? or is there a easier way? I dont have the switch/hub but if i could do something like this, id buy one. I need all the computers on the same network..

 

[bex0rs]

Yeah, just use crossover cables instead of straight through ones (or straight through ones instead of crossovers.) I usually have plenty lying around... just try 'em till I get a link.

~bex0rs

 

[dvanderkodde]

They have switches/hubs with 2 uplink ports (I was just guessing they did)? If so would it still give the second IP to the router through the second uplink port? Also if you know of any switches/hubs with dual uplink ports that are 4-8 port gimme a couple please

 

[bex0rs]

What you decribed would work with the right combination of cables, but you'd need 2 NIC's in the computer connected directly to the internet. One would hold an IP from your ISP and would be connected to the hub / switch (along with the router and modem) and the other would hold a private IP on the same subnet as the rest of the computers on your private LAN. Just be sure to use the default gateway provided by your ISP on that particular computer, not the one that your Linksys assigns via DHCP (if you use it).

edit: Also consider installing firewall software on that machine since it will not be proteced by the router (or pick up another router).

~bex0rs

 

[bex0rs]

Uplink ports on switches are really not that different from the other ports, except for the fact that they do the crossover for you. So, a patch cable in an uplink port and a crossover cable in a standard port will have the same effect.

~bex0rs

 

[OrlyTM]

Just testnig something ... sorry that I used this topic ..

bye
OrlyTM