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Need specific advice on connecting 2 pcs.

Last response: in Networking
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October 28, 2006 6:16:09 PM

I am buying parts for new pc soon and would like to retain the old one in a network with a new one. I have time warner cable service and their generic router with only 1 lan? port I think.. at least there is only one slot for my network cable that goes to my PCs port. Router is RCA and model is DCM245.
Friend told me that router most likely wont support a split connection but I might have misunderstood.

What I want is for both to share internet connection and being able to share files.

I heard from friend that I better off getting a linksys router or something similar with more than 1 lan slots, but does that allow me to share files between pcs? I also thought of getting a crossover cable but I have my doubts. Wont crossover require me to buy a hub or a second network card?

Could anyone please give me some pro advice, would be greatly appriciated.

Oh, old machine is win2k pro, New one will be XP pro.
October 29, 2006 4:35:25 PM

This question first depends on your cable modem. Some cable modems incorporate a router which provides NAT and firewall functionality. We need to find out if yours does. You'd want to have these on the device.

It turns out that your device support this, but whether or not it's enabled depends on your ISP. From the public docs from your ISP, it is not clear whether or not your ISP turns it on. I actually see conflicting information from these sources. Some indications are that NAT is enabled; others are that NAT is disabled; nothing entirely clear one way or the other.

http://www.thomson.net/EN/Home/Press/Press+Details.htm?...
http://www.timewarnercable.com/centralny/customer/inter...
http://www.timewarnercable.com/MediaLibrary/4/68/FAQ/do...

Here's a test:

Find out your public IP from some web site.
E.g. go to: http://www.whatismyip.com/
Then run ipconfig /all from the command prompt, and look at the IP address it provides.

If they're the same, then your public and local (private) IP addresses are the same, and you're on the internet directly, and your ISP has not enabled the NAT / firewall on the modem. In this case, you should either contact your ISP to get them to enable it, or go ahead and buy a router.

If you get a local IP address such as 192.168.x.x, then you have NAT enabled on the device, and can do with just adding a switch. I'd suggest going gigabit to look ahead, as some of these are just about as cheap as the (obsolete) 10/100 ones.

There are other ways to do this, but an add-on hardware router tends to be the best and most convenient generally speaking, and so is generally recommended.

Typical consumer routers also support wireless. These tend to be priced competitively with wired-only routers with a broader and newer selection. However, you should always enable wireless security on the router, or disable the wireless altogether. Otherwise, as out of the box, these routers have a big security hole due to the default-enabled and unsecured wireless.

Some of the Buffalo routers aren't expensive and come well-recommended.

http://www.buffalotech.com/products/product-detail.php?...

The Linksys are similar, but not quite as well-recommended, and are easier to find. The WRT54GL is one of the better ones.

Adding a router, you'll need to go through the steps in its installation manual, but is pretty simple and straightforward for the most part. You need to learn a couple of things about enabling and using file sharing, but guides are easily available online e.g. via Google for doing this.
October 30, 2006 12:00:49 AM

Awesome advice. I appreciate it.
!