2 IPs on one line

zigxter · 12-31-2003, 03:26 PM

how can u separate two IP addresses that exist on one cable line? so that two computers could use internet without a router

Inaris · 12-31-2003, 04:02 PM

takes a special cable modem to do that, I think. I didn't even know that was possible... but then who knows. You need some kind of layer 1 device (hub) to accomodate multiple machine from one connection otherwise
What is it you are trying to do?
if you plug in a firewall/router and turn on DHCP, you have no need for more then 1 IP address anyway. Unless you are buying two lines. Then you would be wanting nic teaming so that you share the two lines, or are just a bit slow and want to pay 2x for the same service...
sorry, rambling... must stop.

mikesgroovin · 12-31-2003, 05:16 PM

You need two cable modems for this type of setup, and your ISP would have to provide an IP address on each of the cable modems.
If you would like to use one cable modem without a router, then you must have 2 NICs in one PC. One of the ethernet connections on this PC would be going straight to the cable modem and the other would be, a crossover cable going to an additional PC or a straight-though cable going to a switch. Then the other PC would also have to be connected to the switch.
Once you have this connected then the machine with the two NICs would act as your gateway. You would have to run some sort of proxy server software on the PC so that it knows that it is the gateway and it can network traffic accordingly. Or you could just buy a small gateway/router/switch combo and then connect the two PCs to it. The router would propagate network traffic more efficiently and faster.

-Mike

Harold III · 12-31-2003, 07:07 PM

not really hard to do. it's very easy if one of your computer is robust enough to be a proxy server for another one. what you need to do is, get a proxy software (Wingate, maybe), and connect these two computers with a switch/hub/whatever that can connect to cable line. you can have whatever IP address for them as long as they are in the same subnet.

mikesgroovin · 01-01-2004, 12:08 AM

I really wish Wingate was that easy to setup. Software proxies have always been a challange to setup for a typical end-user. And a hardware gateway/router are so much easier to manage. When I was trying out Wingate, I got rid of it very quickly and went out and bought a hardware gateway/router. They are easier to manage, you lose a lot of the software conflicts that games and other programs have with proxy servers, you don't have to leave a PC on all the time acting as your gateway and the hardware solution is much faster. In my opinion, I would just buy a gateway/router for about $45.
Not to mention, software proxies such as Wingate and Winroute Firewall go for a minimum of $69. And that is only for a 3-5 user license!
With a hardware/router, you can connect over 200+ computers....

-Mike

zigxter · 01-01-2004, 02:41 AM

man it was more complicated than i thought!
My ISP said i can have another IP address free of charge so i thought i could get a 2nd IP instead of buying a router to connect my 2nd computer to the internet, thats all i wanna do basically, i currently have 1 computer and one IP address, ill be getting a 2nd one soon and i wanted to get that online too

mikesgroovin · 01-01-2004, 02:50 AM

Just buy a gateway/router and plug the cable modem into the WAN or Internet port. Then just connect each PC to this router. You do not need to pay for a sencond IP address.
Hopefully, this diagram can help you out.

http://www.freewebs.com/computer-guides/n_router.htm

-Mike

zigxter · 01-01-2004, 01:09 PM

Quote:

Originally posted by mikesgroovin
Just buy a gateway/router and plug the cable modem into the WAN or Internet port. Then just connect each PC to this router. You do not need to pay for a sencond IP address.
Hopefully, this diagram can help you out.

http://www.freewebs.com/computer-guides/n_router.htm

-Mike

yah but i wanted to do it the cheapest way possible and the 2nd IP is free, but thnx anyways

mikesgroovin · 01-01-2004, 01:19 PM

Wow.....nice ISP to just give you a second IP for free! Out of curiousity, how much are you paying a month?
I am not aware of any cable modem that can manage a second IP at the same time but...maybe your ISP knows of one. Either way, you are going to need another layer3 networking device to manage the two IP address to spit them up.

-Mike

zigxter · 01-02-2004, 02:04 PM

Quote:

Originally posted by mikesgroovin
Wow.....nice ISP to just give you a second IP for free! Out of curiousity, how much are you paying a month?
I am not aware of any cable modem that can manage a second IP at the same time but...maybe your ISP knows of one. Either way, you are going to need another layer3 networking device to manage the two IP address to spit them up.

-Mike

i pay $78/month for cable+internet
would it work if i rent another cable modem?

12-31-2003, 03:26 PM	#1 (permalink)
zigxter Newb Techie Join Date: Oct 2003 Posts: 13	2 IPs on one line how can u separate two IP addresses that exist on one cable line? so that two computers could use internet without a router

12-31-2003, 07:07 PM	#4 (permalink)
Harold III Super Techie Join Date: Dec 2003 Posts: 333	not really hard to do. it's very easy if one of your computer is robust enough to be a proxy server for another one. what you need to do is, get a proxy software (Wingate, maybe), and connect these two computers with a switch/hub/whatever that can connect to cable line. you can have whatever IP address for them as long as they are in the same subnet. __________________ I do this for Aiur. NOT YOU.

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12-31-2003, 04:02 PM	#2 (permalink)
Inaris Master Techie Join Date: Oct 2003 Posts: 2,258	takes a special cable modem to do that, I think. I didn't even know that was possible... but then who knows. You need some kind of layer 1 device (hub) to accomodate multiple machine from one connection otherwise What is it you are trying to do? if you plug in a firewall/router and turn on DHCP, you have no need for more then 1 IP address anyway. Unless you are buying two lines. Then you would be wanting nic teaming so that you share the two lines, or are just a bit slow and want to pay 2x for the same service... sorry, rambling... must stop.

12-31-2003, 05:16 PM	#3 (permalink)
mikesgroovin honk if you route packets Join Date: Sep 2003 Posts: 3,742	You need two cable modems for this type of setup, and your ISP would have to provide an IP address on each of the cable modems. If you would like to use one cable modem without a router, then you must have 2 NICs in one PC. One of the ethernet connections on this PC would be going straight to the cable modem and the other would be, a crossover cable going to an additional PC or a straight-though cable going to a switch. Then the other PC would also have to be connected to the switch. Once you have this connected then the machine with the two NICs would act as your gateway. You would have to run some sort of proxy server software on the PC so that it knows that it is the gateway and it can network traffic accordingly. Or you could just buy a small gateway/router/switch combo and then connect the two PCs to it. The router would propagate network traffic more efficiently and faster. -Mike

01-01-2004, 12:08 AM	#5 (permalink)
mikesgroovin honk if you route packets Join Date: Sep 2003 Posts: 3,742	I really wish Wingate was that easy to setup. Software proxies have always been a challange to setup for a typical end-user. And a hardware gateway/router are so much easier to manage. When I was trying out Wingate, I got rid of it very quickly and went out and bought a hardware gateway/router. They are easier to manage, you lose a lot of the software conflicts that games and other programs have with proxy servers, you don't have to leave a PC on all the time acting as your gateway and the hardware solution is much faster. In my opinion, I would just buy a gateway/router for about $45. Not to mention, software proxies such as Wingate and Winroute Firewall go for a minimum of $69. And that is only for a 3-5 user license! With a hardware/router, you can connect over 200+ computers.... -Mike

01-01-2004, 02:41 AM	#6 (permalink)
zigxter Newb Techie Join Date: Oct 2003 Posts: 13	man it was more complicated than i thought! My ISP said i can have another IP address free of charge so i thought i could get a 2nd IP instead of buying a router to connect my 2nd computer to the internet, thats all i wanna do basically, i currently have 1 computer and one IP address, ill be getting a 2nd one soon and i wanted to get that online too

01-01-2004, 02:50 AM	#7 (permalink)
mikesgroovin honk if you route packets Join Date: Sep 2003 Posts: 3,742	Just buy a gateway/router and plug the cable modem into the WAN or Internet port. Then just connect each PC to this router. You do not need to pay for a sencond IP address. Hopefully, this diagram can help you out. http://www.freewebs.com/computer-guides/n_router.htm -Mike

01-01-2004, 01:19 PM	#9 (permalink)
mikesgroovin honk if you route packets Join Date: Sep 2003 Posts: 3,742	Wow.....nice ISP to just give you a second IP for free! Out of curiousity, how much are you paying a month? I am not aware of any cable modem that can manage a second IP at the same time but...maybe your ISP knows of one. Either way, you are going to need another layer3 networking device to manage the two IP address to spit them up. -Mike