Chugalug Linux Users Group- Dual WiFi Cards
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From: Chad Smith ------------------------------------------------------ Would there be any practical purpose in having 2 WiFi cards in the same device? Could you spread your packets over 2 networks? Could you be connected to the Internet with one and making an Ad-Hoc network with the other? Any other purposes? I'm just curious. *- Chad W. Smith* *"I like a man who's middle name is W."* President George W. Bush - February 10, 2003 bit.ly/gwb-dubya

=============================================================== From: William Wade ------------------------------------------------------ You could have a wifi repeater. One as the "WAN" connecting to another AP the other as the shinny AP. Some wifi routers can do this without a second card, and perhaps Linux can as well, but it would make it faster for sure.

=============================================================== From: Bret McHone ------------------------------------------------------ 802.11N does this with multiple radios on a single card. It is called MIMO and you will see some cards are 2x2 or 3x3 which designates the number of radios on the wireless NIC. As far as spreading you packets across multiple card then think of it this way. Wireless is half duplex communication over a shared physical medium. If you got multiple wireless NICs to one AP to work then you would actually still be slowing your connection down because of protocol overhead. If you wanted to run multiple wireless NICs across multiple APs on different channels then that would get more performance if you could get it to work. -Bret -- Sent from my mobile device

=============================================================== From: Bret McHone ------------------------------------------------------ You could also use that kind of stuff for more nefarious purposes such as Man int he middle attacks. There is software packages out there that make it rather easy to perform packet sniffing, packet injection as well as posing as a legitimate hotspot and dropping all HTTPS traffic down to HTTP (to prevent SSL errors) to sniff passwords and account info... Wifi can be some nasty stuff if you don't protect yourself on open networks (and even "secured" networks for that matter)... -B