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154 Posts
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15245
October 15th, 2005 18:00
Losing internet when second wifi adapter enabled ...
I have two Wifi LANs in my house. One is on 192.168.1.0/255.255.255.0 which is routed through my boadband gateway/router to the internet. The other is 192.168.0.0/255.255.255.0 and is routed through a Linksys WRT54GS router, which connects two desktop PCs through wired connections and the Inspiron through Wifi. The desktops connect to the internet over their own separate USB wifi adapters.
All works OK on the laptop with access to the desktops OR the internet depending on which network I connect to from the internal wifi adapter, from the "view available networks" ... But being a lazy sod ;) I decided to install a USB Wifi adapter onto the Inspiron so that I could simultaneously connect to both networks. However it only works intermittently. Both networks connect OK, and I can ping either router/gateway, but generally once I am connected to the LAN I cannot access the internet. Once I disconnect or disable the linksys routed LAN the internet works straight away. But once I reconnect to the Linksys LAN then the internet is lost again (but the connection to the router/gateway and ability to ping stays ... I cannot ping out onto to internet).
I reckon (perhaps) that internet explorer (the os) is getting confused in some way and is trying to see the internet over the linksys LAN, but doesn't then continue to try on the other one once that fails.
The odd thing is that it does work sometimes ... It worked for a few hours this morning, but after a reboot it hasn't worked since ... despite various attempts.
I can't find anything in "internet properties" that allows me to tell the os to only look on the correct adapter ... but maybe there is something out there ...
Anybody any ideas ....
Thanks,
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CmA
154 Posts
0
October 19th, 2005 21:00
More secure in current config ... Would need a decent firewall on the router/modem, whereas at present I don't care that much about anything getting thru the modem, since I have zonealarm to stop access to all PCs. Whereas the local LAN is all trusted, with little need for firewall protection (still in place, but on trusted level).
CmA
154 Posts
0
October 20th, 2005 09:00
I've a VERY simple firewall in the gateway modem, and then zonealarm on each PC (which I could also put on a single PC and channel all traffic thru that) ... So the setup I have is both fast-ish for all PCs accessing the internet, with 11mb/s adapters, and then the separate trusted 11G LAN for PC to PC access. All works pretty well ... and hopefullly the internet dropping problem is now gone ... which it seems to be.
Thanks for you help ...
Greg16
121 Posts
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October 20th, 2005 10:00
Greg16
121 Posts
0
November 15th, 2005 01:00
http://research.microsoft.com/netres/projects/virtualwifi/
Really interesting. Connect to more than one network with only one card
CmA
154 Posts
0
November 15th, 2005 16:00