connecting a cable modem to the hub it does not work

[skywalker[TSG]]

why wont it work when i connect the modem to one comp it works fine but when i connect it to the hub it wont work at all not even on one comp

[Rookie]

I'm not really the best person to answer this but since no one else has offered, I'll give it a shot: as I understand it, cable is an always on type of connection. So, you cant connect it to a hub like you would a modem connection. By that I mean it isnt a dial up connection. To use cable with other machines one would need a third party prog like sysgate, there are others like it as well. The machine connected to the cable is going to have to be the server and the others clients...Thats a close as I can get...Apologogies for inaccuracies but no one else offered a post- perhaps the moderator will correct me if I'm wrong.
Rookie

[Pantion]

You can not connect the cable modem on the hub. If you want to share the modem with other computer you gota get 2 network cards. One for the modem and the other for the hub. And you'll also need a program like wingate so everybody can use the connection of the modem.

Hope been of any help.

[Mntsnow]

Rookie, You are correct!
My brother is a lucky one to have a "cable" connection. What we had to do is install TWO nic's and then I installed SYGATE on his system (the one with 2 Nic's) and then you "Bind" one nic to the cable connection and the other to the "Lan"(your local network). it is very easy to do and very easy to configure (SyGate that is) www.sygate.com . They have a "freeware" version if you are only trying to share the connection with 2 computers or for a VERY MODEST fee you can buy more connections. (it is not crippleware so you can really see if you like it)

Good Luck

Mntsnow

ps. Skywalker..The reason it will not work when plugged into the hub is the cablemodem needs the "information" from your NIC card (such as IP address ect.) When connected to the hub it doesnt get all the info it needs to operate. The great thing about SyGate is all the other computers on your network will not be "seen" by the internet even if they have different "local" IP addresses. The only IP "seen" by the internet is the one that the cable modem it connected to.

[This message has been edited by Mntsnow (edited 08-29-99).]

[800XL]

Most of the cable modems I have seen are able to operate just fine from a hub. The problem usually is that you will not get any IP addresses except for the one machine that is properly setup for it. I know with TCI@Home you can order extra IP addresses for more than one PC.

In this case I am guessing it may have something to do with the cable. If the cable from your cable modem to your computer is a "crossover" cable, it would not work when plugged into a hub. If you can put your hands on one, try a different cable between the hub and the modem.

When the modem is plugged into a hub, all of the same info is passed along to it as would be if it were directly connected to the machine. The machine that you have configured to use the cable connection should have no problem connecting. Just the other machines on the hub will.

[800XL]

I agree that a proxy setup is better on the economics. I was just addressing the "it wont work at all not even on one comp" part of the problem really.

Connecting a cable modem to a hub to a PC, as long as the wiring is correct, is no different from plugging right into a network card. Most of the cable modems and external DSL modems I've seen work as a 'bridge'. They send everything on one 'network' across to the other network. This includes the DHCP request your machine(s) sends out in order to get an IP address. For one machine, it should work exactly the same.

Sygate is one of the easiest to use and more powerful proxy programs around. Check out www.sygate.com for more info.

[Mntsnow]

800xl,
Thats why I used 2 cards in the one computer and "Share" the 1 ip address. For what it would cost for 2 months of service for a 2nd or 3rd IP address for my brother's other computers I was able to setup all 3 of his computers to use the 1 cable connection. So in a way I quess we are both correct. (btw his cable connection company doesnt have a disclaimer about "server" type software).

I thought Skywalker was trying to "Share" the 1 cable connection he had..

[MikeEP]

skywalker[TSG]
I just went through the same thing,
What I had was a
1 Linksys hub,
2 Linksys 10/100 cards
1 Motorola Surfboard 4100 Cablemodem
RoadRunner explainde it this way.
Some hubs lower priced ones especially do not work well in this setup. modem could not see the nic and no connection could be made. I swapped the Motorola for a Toshiba PCX 1100 and poof it works! Except it cuts the speed in half or lower. I will be getting a router to correct this. Hubs do not work well with cablemodems.

[neo_otyugh]

if you are paying for more than one IP you can hook up as many computers as you are paying for IPs to the hub. i was running 3 computers on a hub going to a cable modem before and it worked fine. i got tired of it and now use win2k adv server running a nat and 2 nics.

[PassnThru]

You can hook the modem directly to the hub. I'm doing it right now (it's a LinkSys switch actually). In fact, the guy that installed the cable modem hooked it to the hub instead of installing an additional card in the PC. Of course, I have since put a router between the modem and the switch but it was hooked directly to the hub to begin with. As was mentioned before though, you can't share the connection just by hooking it to a hub. You need a router or a software solution in the main machine to provide NAT so that the cable company only sees requests from one IP address.

[Ollie46]

Ok, if you plug the cable modem directly in to a "hub" not a "router w/ a built in switch" it should work as long as the cable modem is able to act as a gateway for the LAN, if not, then the one pc that has the cable company's ip info should work and the others should not. Of course even if the cable modem does act as a gateway, that would still be stupid to do since you don't have any security against hackers getting in to your LAN and using your box as an attack box on another LAN. @HOME network clients are easy targets. I am a Sys Admin at an ISP and I just saw an attack on one of our co-located client boxes where the hacker used several hacked @home accounts to get in without being detected until we detected on our network instead of the clients. So the point of this little stray from the topic is that if you are going to plug your cable modem in to hub then spend the extra money and buy a inexpensive Linksys or Netgear Cable/DSL router to use as a firewall and NAT server. Or if you don't have the money for Router setup one of your machines like MntSnow did, that is perfectly fine and secure also.

Ollie

[AnalogKid]

I have my network set up using Win2K Pro's ICS feature. I have two Nics in my Host or Server with my cable modem coming in to the Host and the second Nic connected to a Linksys 5 port workgroup hub and then run my other PCs from the hub. The ICS is very easy to configure with a little TCP/IP knowledge and it works great. You would never guess my other PCs have a P-133s in them.