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Thread ID: 61409 2005-09-03 21:20:00 Can't get dual networks to work at same time SteveH (8822) Press F1
Post ID Timestamp Content User
385838 2005-09-06 06:04:00 I think you might find the problem is due to the default gateway causing confusion between the two connections. Try unassigning it on the local connection. mikebartnz (21)
385839 2005-09-06 06:28:00 Havent tried this - but do the two NICs in the computer allow use of two different IP addresses (or the same IP address in two different subnets)? If so why not put the LAN connections on a different subnet to the router connection?

And also as mikebartnz said - dont bother with the default gateways on the LAN connections...
HadO (796)
385840 2005-09-06 10:09:00 Thanks. Is there any way to prevent the second PC having access to the Internet if I try using Internet Connection Sharing, or (as the name suggests!) is that impossible with ICS?

Ahhhh I see. I'm thinking you could. I had a quick try with some of the settings for allowing various ports and apps within Windows Firewall (I have XP) but that wasn't too successful. I suspect a personal firewall solution like ZoneAlarm might do it but have not tried it.

But from what I'm reading, you basically want this setup;
PC1 (your PC) is connected to the internet via NIC1 to a ADSL router. This connection would be running at 100MB due to limitations of the router.
PC2 (Sons PC) is connected to PC1 via a cross-over cable from NIC2. As both computers have gigabit cards they should be able to connect a 1GB speed.
PC2 should be able to have file access to PC1 (and vice-versa) but should not have internet access.

Have I got that right?
Freejack (375)
385841 2005-09-06 18:52:00 ... from what I'm reading, you basically want this setup;
PC1 (your PC) is connected to the internet via NIC1 to a ADSL router. This connection would be running at 100MB due to limitations of the router.
PC2 (Sons PC) is connected to PC1 via a cross-over cable from NIC2. As both computers have gigabit cards they should be able to connect a 1GB speed.
PC2 should be able to have file access to PC1 (and vice-versa) but should not have internet access.

Have I got that right?
Yes, absolutely right.

PC1 and PC2 do connect well at gigabit speed (which means file access works like lightning :D ), but currently when they are connected the connection from PC1 to the ADSL router stops working.
SteveH (8822)
385842 2005-09-06 18:58:00 ... why not put the LAN connections on a different subnet to the router connection? ...
Thanks, that sounds likely to work.

I have a Windows 2000 system at work which has two NICs - one for connection to a local instrument and the other for connection to the company LAN (and thus the Internet). I know the two NICs have completely different IP addresses ... the local instrument NIC is 10.0.0.1 from memory, while the other one starts with 147 or something like that. Guess I should have thought of trying that! :blush:

Will give that a try when the rest of the household are up and about ...
SteveH (8822)
385843 2005-09-06 20:34:00 Most people use the 10.0.x.x and 192.168.0.x ranges as (I think) these are reserved for internal networks so internet routers will not "route" packets destined for these addresses. Probably your adsl router is serving up ips in 192.168.0.x so yes - using the 10.0.x.x range should work between PC1 & PC2 Freejack (375)
385844 2005-09-06 20:36:00 . . . why not put the LAN connections on a different subnet to the router connection? . . .
Hey, this worked !! :thumbs:

Thanks to everyone for their contributions ;)
SteveH (8822)
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