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Discussion Starter · #1 ·
Hi guys,

I've been trying to set up a wireless network between three machines as follows:

Host machine runs Windows XP and has broadband internet access through a USB cable to a Speedtouch modem.

Client A runs Windows XP, and Client B runs Windows 98.

The host machine has a wireless USB network card. The two clients are both laptops, and have PCMCIA wireless network cards. There is also a Safecom NAT wireless router which is not physically connected to any machine.

Now, I'd like to set up a wireless network in which the host connects directly to the internet and the two clients connect through the host's broadband connection. I have run the network setup wizard on all three machines and the network seems to be in place, all three machines can "see" eachother and share files. However this only works when the host computer's internet connection is not set up to be shared! When I change the properties to allow other users to share the connection, the host computer disappears from the network and only the two clients can see eachother.

I've been trying to sort this out for days, and it's driving me insane. Another peculiarity is that the router has a control panel which can be accessed by entering it's IP address (192.168....) in an internet browser. However only the two clients are able to do this, if I try with the host computer I get a DNS error. One of the control panel options is a DHCP clients list, this shows the name, MAC address and IP address of machines connected to the wireless network. Unless I disable internet connection sharing, only the two client machines appear here.

The router is set up as follows (default options):

Lan IP Address: 192.168.123.254
WAN Type: Dynamic IP Address
Host name:

DHCP Server: enable
IP Pool Starting Address: 100
IP Pool Ending Address: 199

Wireless Network ID (SSID): networkname
Channel: 10

The router status screen always looks like this:

Remaining Lease Time: 0:00:00 (reconfiguring)
IP Address: 0.0.0.0
Subnet Mask: 0.0.0.0
Gateway: 0.0.0.0 (Unreachable)
Domain Name Server: 0.0.0.0

Eventually the "reconfiguring" sidenote is replaced by a "Renew" button. However pressing this only redisplays the "reconfiguring" message. The other fields never change.

Octets: 56289 Inbound 32800 Outbound
Unicast Packets: 0 Inbound 0 Outbound
Non-Unicast Packets: 358 Inbound 100 Outbound

As I said, this is driving me mad. I'd be infinitely grateful for any help or suggestions.

Thanks,

Adam
 

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Are you trying to use Windows ICS software to share the connection from the host PC to the internet through the Speedtouch modem?

ICS is a piece of software that effectively makes the PC running it a router. ICS acts as a DHCP server and issues IP addrs in the 192.168.0.x / 255.255.255.0 subnet. Your wireless router is also a DHCP server, seemingly issuing IP addrs in the 192.168.123.0 / 255.255.255.0 subnet. And therein, I believe, lies your problem - namely using (effectively) two routers, and certainly two DHCP servers, on you network. They don't get on! As soon as you switch on ICS it clashes with the router and you see the results you describe.

You could seek to disable DHCP on the router and use the wireless router just as an access point. Perhaps manually give the router an address such as 192.168.0.254 in the ICS subnet and try it from there.

I know you probably don't want to hear the solution: get a DSL modem with an Ethernet connection, connect the modem directly to the WAN port of the router, ditch ICS and allow the router to share the connection with all the PCs. But ultimately that is the easiest and most robust solution!
 

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Without knowing for sure what ports are available on each piece of equipment, I would try to set it up like this.

Modem
Linksys Router
Wireless Laptop Direct Connect Computer Wireless Laptop


Don't use ICS, Just set each up to receive IP Automatically, and configure you SSID and WEP key
 

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Discussion Starter · #4 ·
OK, I admit to having spammed this across a few other message boards, and the advice I've been given is pretty much the same. I think the best solution is to get a new broadband modem with ethernet (wouldn't cost much split three ways) and set the network up as you described. I called the ISP and they said there would be no problem using a different modem to the one they provide.

Many thanks for all the help anyway.

Adam
 
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