connecting another computer

dakotathunder · Post by **dakotathunder** » Sun Aug 18, 2002 1:46 pm

i have a desktop computer online, and it is on my only available isp connection to the internet, i have a second ethernet card for my desktop. if i buy a laptop, and install the second network card in my destop, can i hook my laptop to my desktop and access the internet with both computers under the same ip address. if so will the slow speed of my desktop affect the access of the laptop and will high internet activity on the laptop affect the desktop in any way

zxc47 · Post by **zxc47** » Sun Aug 18, 2002 10:28 pm

your best bet is to go with a router.and Yes you can do that ,you have to set one up as a proxy server .

dakotathunder · Post by **dakotathunder** » Sun Aug 18, 2002 11:52 pm

i have a router, one connection per person in our apartment, and with our cable company we have purchased three ip addresses and the next step up for ip addresses is too expensive. setting my slow desktop as a proxy server for a fast laptop, how well will that work, i dont want to have a slow connection on the laptop, nor do i want to lag down the desktop.

zxc47 · Post by **zxc47** » Mon Aug 19, 2002 12:16 am

are you running off a router now?IF so just add a switch

dakotathunder · Post by **dakotathunder** » Mon Aug 19, 2002 12:19 am

switch?, sorry for my ignorance, but some of this is new to me, can you send me some more information or point me to a website?

zxc47 · Post by **zxc47** » Mon Aug 19, 2002 12:32 am

http://www.provantage.com/scripts/go.dll/-s/fp_45381
What a router does is gets an ip from the modem then it gives out IP for all computers you plug into it.If you uplink a switch to it the router will give out IP to all the computers you plug in to it. Your cable company can only see the IP the router has.the other computer use a network IP like 192.168.0.1 and so on 192.168.0.2. If the router your on does not have a uplink port just use the uplink port on the switch and use a crossover cable

Post by **YeOldeStonecat** » Mon Aug 19, 2002 2:35 pm

If I'm reading you correctly, it sounds like you don't have a router in place. With a router, you only take a single IP address from your ISP, and share it out to a private network of up to 253 computers. I'm guessing you have a cable connection, with 3 IP's from your ISP.

What you can do is get a broadband router, take a single IP address, and share it out to up to 253 computers.

Or if you just want to share it out to your room, get a router, connect your network cable that goes to the main router, if the building has one, or the modem....take the IP address you were given, and split it up with a router.

Susky · Post by **Susky** » Mon Aug 19, 2002 3:06 pm

Originally posted by YeOldeStonecat
If I'm reading you correctly, it sounds like you don't have a router in place.

I was thinking the same thing. Sounds like you have a small hub, hence the need for different IP addresses. If you set up a router/switch instead, you can drop all but one IP, and maybe recoup a little or the router cost (which really isn't that much these days.

dakotathunder · Post by **dakotathunder** » Mon Aug 19, 2002 5:06 pm

i have a router with four ports. we pay for a connection for up to three computers. if we hook up a fourth computer to the router all service is lost until we unplug the network line for the fourth computer, power cycle the router, and the cable modem. so apparently Cableone can control how many "independent" connections we have, that is why i want to run a laptop through the desktop, so that both of them can have access(even if its not as fast as the other two computers). Now does it make sense!?

Post by **YeOldeStonecat** » Mon Aug 19, 2002 5:16 pm

What is the exact brand/model is this "router" you have. If it's a true NAT router, then your ISP cannot limit wether you have 1, 2, 3, etc computers behind it, since a NAT router...you'll only be using 1x WAN IP address....not 3x.

Solution for you, yes, you can use Windows built in ICS on your computer to a laptop, since your computer has 2x NICs. Or, you can use a router yourself for your room.....the network cable that currently plugs into your computer that has internet access....simply plug that into the WAN port of a router, then your workstation, and laptop, each have a network cable running into one of the LAN switch ports of the router.

dakotathunder · Post by **dakotathunder** » Mon Aug 19, 2002 5:40 pm

1/2 T1 access from cableone.net. motorola surfboard cable modem. 3com home ethernet gateway. cat5 cable. two aopen 10/100 pci ethernet cards installed in a desktop (amdk6-2 450, 256mb ram) and i plan to buy a dell 2ghz laptop

zxc47 · Post by **zxc47** » Tue Aug 20, 2002 6:11 pm

Just add a switch to the router set up will look like this cable modem to router to 2 or 3 computers on the router then a crossover cable to the up link port on a switch then out to other computers

dakotathunder · Post by **dakotathunder** » Wed Aug 21, 2002 2:09 am

and both the computers on the switch would have the same ip address? and could simultaneously?

zxc47 · Post by **zxc47** » Wed Aug 21, 2002 8:14 am

Yes all the computers behind the router will have the same IP. and yes you can use all the computers on line at the same time

Post by **YeOldeStonecat** » Wed Aug 21, 2002 9:09 am

Dakota...do this. On your workstation that currently surfs now, connected to the 3Com router.....run ipconfig or winipcfg and tell us what IP address it gets. If it's a private class C such as 192.168.1.10X....then all you need to do is uplink a switch to the router, like zx suggested. The router will allow many computers to share the single WAN IP connection of your 768 cable pipe. The 3COM router should let up to 253 computers share the same connection, they will all have a unique class C private IP address....but all share the same single WAN IP address.

Scott · Post by **Scott** » Wed Aug 21, 2002 1:12 pm

Yeah, the idea that the cable company can "tell" how many computers are behind the router just seems odd.

I agree with YOSC, you should be able to run several computers off your router just fine, using one single WAN IP address, provided all the computers are getting a private class IP address. And if for some reason you can't do this, then using a second NIC and ICS on your desktop should solve your problems as well, just not the best way to do it.