problem - 2 outlets but only 1 modem...

  blinkbhoy 23:17 16 Feb 2006

hi all,

in my home there are 2 broadband cable outlets - 1 downstairs & 1 upstairs. the 1 downstairs is the PC that my family use & is connected via the stand-alone cable modem my broadband ISP provided.

i wish to connect my PC upstairs to the currently ununsed outlet.

can this work if i buy another modem? or is going wireless the cheapest and least complicated option for a novice?

thanks in advance.

  mgmcc 23:50 16 Feb 2006

You cannot connect two modems simultaneously to a broadband connection. Also, if it is "Cable" broadband, you *MUST* use the modem supplies by the Cable company - NTL or Telewest - you cannot buy and install your own Cable Modem.

If you want to run two PCs from the connection, you will have to network them.

To create a wireless network for Internet access and File/Printer sharing, you have essentially two options:

1) Install a Wireless Network Adapter in each PC and create an “Ad Hoc” Wireless Network. This is a network in which the two PCs talk directly with one another, rather than via a Wireless Access Point. “Internet Connection Sharing” is then enabled on the actual Internet connection in the “host” PC and the “client” PC will have Internet access provided the “host” is running and online.

When you enable “Internet Connection Sharing” on the Internet connection, it automatically configures the Local Area Connection with the IP address and subnet mask However, as you will be using a WiFi adapter, you want this address to be allocated to it, rather than a “wired” Ethernet adapter if you have one fitted, so the Local Area Connection should be disabled before setting up “Internet Connection Sharing”. The "Client" PC's Local Area Connection should be set to get its IP address automatically, which it does by DHCP from the "Host" PC. Also, if you run the Zone Alarm firewall in your “Host” PC, the Internet Zone Security level must be reduced from High to Medium or “ICS” traffic will be blocked.

To enable “Internet Connection Sharing” in Windows XP, open the Network Connections folder, right click the actual internet connection (modem connection), select Properties and then the Advanced tab. Tick the box “Allow other network users to connect through this computer’s Internet connection”.

2) The preferred option for connecting more than one computer is to use a broadband Router and, with ADSL, this should be a combined “Router/ADSL Modem”. This is an ”Infrastructure” wireless network because the connected PCs communicate via the router’s Wireless Access Point. Again, a wireless adapter is installed in any PC that needs to connect wirelessly, but often the main PC is close enough to the router for it to use a “wired” connection with only the remote PC connecting wirelessly

With a router, it is the router which connects directly to the ISP and not one of the connected PCs. The router in turn allocates the IP addresses to the PCs, using one of the address ranges reserved for Local Area Networks, usually

Either of these options will additionally allow you to run File and/or Printer Sharing wirelessly across the network.

If you are running software firewalls, the IP addresses of the networked PCs must be put into its "trusted" area to allow them to communicate with one another.

  blinkbhoy 00:10 17 Feb 2006

thanks a million mgmcc :)

i love this site.

  keewaa 12:37 18 Feb 2006

From your first post, I gather you are on cable (NTL/Telewest) and not adsl, so just be careful to NOT buy an ADSL wireless router, but DO buy an ordinary cable (or, confusingly, often called DSL wireless router)

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