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General discussion

8/27/05 Routers, switches, and hubs, oh my!

Aug 24, 2005 5:03AM PDT

Members, thank you for your participation in this week's topic. And a huge thank you goes out to those who took the time out to write out some really extensive explanation for Andrew on routers, switches, and hubs !

While many advice from our members do somewhat overlap, please don't undermine another person's explanation because they are all great, so I encourage you to read through them all. As always, if you have more questions to ask about the topic or have any additional advice to offer, please by all means participate and add to this week's thread.

Take care and thanks again everyone!

-Lee Koo
CNET Community


Question:

I'm trying to connect three PCs in my home in order to share
my DSL Internet access. In my research, I keep reading about
routers, switches, and hubs. I can't make heads or tails out
of it. What's the difference? Do I need all of them? Don't
some of them have firewalls built in, or do I need one for
each computer? The machines are running Windows XP. Thanks.

Submitted by: Andrew C. of Lawrence, Kansas

(Winning answers and other submitted answers found below)

Discussion is locked

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Other way to share connection...
Aug 26, 2005 2:09AM PDT

Hi!

I looked around a little.. but didn't see the "third" way to share a connection. If you allready have three computers, one switch and a broadband connection, then you only have to buy one more NIC (Network Interface Card) and install it into that computer allready connected to Internet. That way you have two cards in that computer, one connected to Internet, the other one you simply connect to the switch. Then you share the internet connection the same way as described in the case with dialup connection.. This would be the cheapest way to share a conn. if you allready have a switch... NIC's are virtually for free now adays ;o)
No router needed... but remember to have a good software firewall installed on each computer... and offcourse antivirus software... NOD32 is a good one, that doesn't "lag" your computer the same way Norton, F-Secure and others do.

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DSL and routers
Aug 26, 2005 2:34AM PDT

I didnt read the est of the replies, so, this may have been said already.

I think it has alot to do with your DSL provider.

SBC - the 2wire Home portal is excellent. I use it and have 3 PCs hooked up, and run a game server off it.

I believe some providers use PPPoE and some dont. That would be a deciding factor.

If they dont. I believe any router will do.

The modem has a lot to do with it.

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Windows XP Firewall
Aug 26, 2005 5:32AM PDT

Most of the aforementioned info in the answers above is direct, concise, and spot on. But a recurring bit of advice seen in many of those answers is not. In a DSL/Cable full time connected &/or networked environment both a Hardware Firewall as provided by most routers AND A SIMPLE FREE SOFTWARE FIREWALL should be installed for even basic security to hold up against the simplest of attacks from outside (not to mention possibly inside), your network. The XP Firewall is a simple 1 way software firewall (once configured correctly it protects only from attacks from the outside). This is not, I repeat NOT SUFFICIENT protection in my opinion.

With the constant attack of those (all) computers connected to the world wide web (the internet), on a full time connection such as DSL/Cable by viruses, worms, spyware, malware, foistware, browser hijackers, etc., a simple 2 way software firewall is necessary for even the most basic of security....Once a malicious program is installed on your computer, is running in background, and collecting data (the most common crapware is programmed to dial/call/contact home or simply search the local network or www. for other vulnerable computers to infect). The XP firewall does not even come close to protecting against that outgoing stream of data by my understanding and proof I have seen w/ my own eyes in logging of both incoming & outgoing connection attemps after installing and properly configuring another free software firewall.

This security move is simple, many are free (I use Zone Alarm Free myself as do most of my customers, though some prefer the Pro Edition), quite easy to configure since you determine (and can see the port/program activity), what traffic wil be allowed in or out, by a few simple clicks - 1 program at a time.

I spend most of my life cleaning up the messes these malicious programs make in customers boxes who connect to the internet without the simplest of basic protection a 3rd party free software firewall provides. It provides me w/ a decent living, but I'd much rather be building my customer's that next great custom dream system they always really wanted w/ that money I have to charge them for cleaning services. I get much more out of building them right, fast, & configuring them properly the first time than just cleaning a real dirty house.

Cglrcng

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Some additional things you may consider with a wired network
Aug 26, 2005 4:01AM PDT

I am a great believer in wired networks but they are a lot of work. Here are some additional things you should be aware of if you are going to install a wired network in your house.

1. select a central location for the modem, router and hub. Put it somewhere up high away form the kids and dogs. And where you can see the lights.

2. plan on having data outlets in just about each room of the house, and at least two in the big rooms (I have 12 outlets so far in my house). Another word about data outlets. Use a double power box. The reason I say this is because as long as you are pulling cat5, you may just as well pull coax and phone wire. There are companies that make a full assortment of jacks for phone, coax and cat5 (visit home depot for starters). Use a double box. The double box gives you lots of room to wire.

3. Learn how to push down and crimp cat5. Crimping takes some practice. Get a good crimper ($15 on ebay). I messed up my first 3 times. Then I learned how to crimp so I set up a web page about it.

4. Get a one port router and an eight port hub. Believe me you will run out of ports real fast.

5. Test things one at a time so you can isolate problems, and believe me, you will have problems. Test each component separately. I will explain how to do this once I get my page updated. My page is about four years old and grossly out of date.

6. One installation test deals with just the local network.. This involves wiring each computer to the hub and trying to communicate. This is mostly a test of the cat5 wire. Get the local network working before you try to uplink.

7. Another installation test is connecting directly to the modem. The SP gives you a modem and installation software. Get that all working from a single computer connected directly to the modem before uplinking the router.

8. Use the modem that your SP provides. Let them own it. It then gets upgraded by the SP. But you have to upgrade your own router software.

I will try to get my web page up to date but these are just a few things that came to mind. My network has been working well for about 4 years now. I went from DSL to cable without a snag.

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Executive summary - the quick and simple answer
Aug 26, 2005 4:30AM PDT

See the other messages for details, but here's the executive summary:

1. Your MODEM acts as a translator between the DSL or Cable line and your PC or network.

2. A ROUTER allows that single modem to communicate with more than one PC. It "routes" the data to/from each PC in/out from that single modem. Once you connect a ROUTER, you have a local NETWORK.

3. A FIREWALL, either as a separate unit or integrated into the ROUTER, blocks outside data and users from getting into your local NETWORK unless they have a specific, approved reason for being there.

4. Each PORT on the ROUTER lets you plug another PC into the local network.

5. If you want wireless capabilites, a router may include WIRELESS access via an extra port (hidden, but it's essentially a port via the antenna).

That's all you really need, UNLESS you need more ports than those which came with the router.

6. A HUB lets you take one of those ports and break it out into multiple additional ports. But HUBS are old technology and not very efficient.

7. A SWITCH does the same as a hub, but it is smarter and more efficient.

8. A WIRELESS ACCESS POINT plugs into any physical port on a router, hub, or switch, and creates a new "hidden" (antenna) connection for a wireless laptop, etc. (If your router has a wireless port, it's essentially including a single wireless access point for you.)

9. A PRINT SERVER is a box that connects to a network port (or via a wireless access point) and lets you share printers over the network.

Frankly, you are right, they make it all so much more complicated than it needs to be. And even the manufacturers do a poor job of explaining what you REALLY need.

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a new twist: hybrid networks (Mac/PC)
Aug 26, 2005 12:49PM PDT

any suggestions on methods/hardware for sharing broadband internet among both PC and Mac OS systems? (old OS's on both as well: OS X and Win98SE, to be frank)
I've been shopping and researching since before Lee Koo posted the answers, but the more I read the more I'm mystified by the protocol and new technologies, e.g. 802.11a, b, g, pre-N; and Power-Line Networking (http://www.cnet.com/4520-7390_1-6274537-1.html?tag=side)

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Mac/PC internet sharing is easy, file sharing is not!
Aug 30, 2005 11:34AM PDT

Macs (system 7 and up) and PC's os 98 and up can share internet connections without problems.

Simply connect a gateway-router to to the incoming broadband and connect ethernet wires from the router to each machine (wireless will work on most operating systems just as well) follow the various internet setup wizards according to your OS and the systems will pick up their network addresses from the router. The MAC's may need you to turn on TCP/IP in the control panel - this will usually turn off appletalk and make it impossible for you to use an appletalk printer without a "ethertalk bridge" The MACs usually communicate among themselves using ethertalk (TCP/IP) just as good, or better than with appletalk.

You will be unable to share files with the PC's without using one of the software or hardware products specifically designed to allow that.

Have Fun!!

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hookup through switch.
Aug 27, 2005 1:21AM PDT

I am having trouble connecting my computers through an SMC 6405tx switch. I can only get 1 at a time to connect. A friend of mine told me to disconnect everything and connect it all from the computers back to the modem. Power up the switch and then the modem. It finally acknowledged the other machine but then the main one showed, page can not be displayed.

Do I need a router with internal switch? As far as I know the switch should do it alone.

Do I need to set up for network connection?

Thanks.

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Hooking up is the easy part
Aug 27, 2005 4:52PM PDT

>"I am having trouble connecting my computers through an SMC 6405tx switch. I can only get 1 at a time to connect. A friend of mine told me to disconnect everything and connect it all from the computers back to the modem. Power up the switch and then the modem. It finally acknowledged the other machine but then the main one showed, page can not be displayed...Do I need a router with internal switch? As far as I know the switch should do it alone....Do I need to set up for network connection?

A switch will allow two (or more) computers to communicate (e.g. share files) with each other, assuming you have set up everything else (Workgroups, computer names, users, network protocols) correctly.

It will NOT let you share an internet connection without either a router or a software solution. Windoze 98, ME, 2000, and XP, all have ICS (Internet Connection Sharing) built in, and you can also download a free third-party ICS solution from Sygate.

For speed, and less problems, a router with a built-in switch is preferable. But, you already have a switch, so you may as well use ICS for now. The following link provides step-by-step instructions, virtually fool-proof if you bother to read and follow them:

http://www.practicallynetworked.com/sharing/

Note: Generally, when you first boot-up after installing a network card, Windoze will set up your network protocols correctly for (inefficient) intra-computer communications. You still have to handle the workgroup, computername, and users issue --- and eventually fine-tune the protocols for efficient and enhanced security.

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set up wizard
Aug 29, 2005 6:21AM PDT

I have followed all the steps for setting up a home network a number of times. Now I get a message saying windows can not finish set up wizard on the client machine. In Lan and high speed internet connections it shows that it is connected and gives an IP address. It also says auto private address enabled IPv6.

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Save the headache
Aug 30, 2005 11:39AM PDT

Get a router, eBay the switch. It's possible to get complete the setup using a switch, but all you are doing is inviting a hacker into your network and adding to the headache. A broadband router will be worth the $50 in headache medicine saved.