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Topic # 57090 2-Feb-2010 19:26
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Hi,


My situation is this: I have a Netgear DG834 modem/router providing my broadband connection. I have a laptop (running Vista Home Premium) connecting to the DG834 via wireless, and this works fine. I also have a desktop PC (running Ubuntu) connected to the laptop via gigabit Ethernet. I would like to share the internet connection so the Ubuntu PC can access it via the laptop.


However, so far no joy. When I attempt to enable sharing on the Wifi connection I get the not-so-helpful "An error occurred while enabling internet connection sharing" message. I Googled the error and found a couple of possible causes, the first of which being non-running services, which I then enabled. No joy. I then thought it was a problem with the router grabbing 192.168.0.1, so I changed the IP address of the router to 192.168.0.2 but left the DHCP range as 192.168.0.1 to 192.168.0.254. Still no joy. I tried making sure that both the Wifi connection and the Ethernet connection were set as Private networks. No joy.


I'm running out of ideas now. I've had a search on the forums and they only seem to suggest the things I've already tried. Any fresh ideas?


Thanks,


Martin

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BDFL - Memuneh
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  Reply # 295572 2-Feb-2010 22:18
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When setting up an ICS the FROM adapter will be changed to use 192.168.0.1. You will have to manually add gateway, DNS, etc.

You have to "reserve" that address. Change your router (as you did) and make sure the router DHCP is configured properly.

In your case your PC is 192.168.0.1 and your router 192.168.0.2... But your DHCP range starts at 192.168.0.1 - which obviously may case some problems from the start.

First. fix the DHCP configuration. Make sure no other PC is using that address and start again.







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  Reply # 295574 2-Feb-2010 22:23
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Thanks for the response. So to clarify (I'm not a networking genius, I just know enough to be dangerous!):

I need to set my DHCP range to be ABOVE the address of the router (i.e. 192.168.0.3 onwards)? Once I've done this I guess I should reboot both machines (laptop and PC) to make sure neither of them (nor the router) can grab 192.168.0.1, yes?

Cheers,

Martin

 
 
 
 


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  Reply # 295575 2-Feb-2010 22:23
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IIRC you can change the ip address etc ICS uses by editing the registry so it doesn't use .1

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  Reply # 295578 2-Feb-2010 22:28
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"No network engineer" = "Don't change registry".

Yes, make sure DHCP starts from 3...






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  Reply # 295580 2-Feb-2010 22:55
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I think I'm almost there, thanks Mauricio.

I changed the DHCP range to start at 192.168.0.3. I then rebooted everything, just to be sure. I then fixed the IP address on the LAN adaptor to 192.168.0.1 (plus set the default gateway and DNS servers to the relevant values) and successfully enabled sharing on the Wifi adaptor!

However, the desktop PC (connected to the LAN adaptor on the laptop) still can't see the internet. Is there anything I need to change on the desktop PC?

(and yes, I definitely don't fancy hacking around in the registry!)


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  Reply # 295593 3-Feb-2010 00:06
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It "can't see the Internet" as in can't go to a website? IF you open a command prompt and type "ping www.geekzone.co.nz" what does it say?

If it says "can't resolve server" then your configuration doesn't include the correct DNS. Have you entered the DNS in the fields?








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  Reply # 295809 3-Feb-2010 19:10
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If I try and ping www.geekzone.co.nz... from the desktop PC I get "can't resolve server".

If I try and ping 66.249.89.99 (Google) from the desktop PC I get no response.

I have definitely specified the DNS servers in the network settings for the LAN adapter on the laptop. Do I also need to set them on the desktop PC? If so, should they be set to the same values as on the laptop, or to 192.168.0.1?

In the Network Connections control panel on the laptop I have 2 connections:
Local Area Connection - access to Local only
Wireless Network Connection - shared, access to Local & Internet

I feel I'm very close to a solution!

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