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Originally posted by: Plugabugz
It's unlikely, but do you think Nintendo will create a "relay channel" whereby the Wii will take DS online traffic and send it on to the router?
Wireless networks are not based on peer-to-peer communication. Wireless networks requires an access point to function. What you suggest is having two separate networks - one between the Wii and the router, and the second between the Wii and the DS.
Two problems:
1. I'm quite sure the Wii cannot act as an access point. Many wireless cards can work in access point mode but this is more due to heavy modifications to the device drivers. I'm sure the Wii has the potential to act as a dumb access point for LAN gaming through a system update but don't hold your breath.
2. Having two wireless networks nearby increased the opportunity for intrusion. Especially when the Wii cannot do WPA as the DS doesn't support it. What you're thinking of doing is shifting the problem, not solving it.
Securing a wireless network can be done through other methods such as hiding your ESSID, turning off DHCP and setting up a ARP table for only the devices that you permit. Its not as straightforward as switching on WPA but it will go a long way to deterring intruders. I'm not going into a huge debate about wireless security, but if someone wants to leech your Internet connection then it is as straight forward as retrieving enough packets to decrypt your WPA key. Wireless networks will never be as secure as wired networks due to the ability to "listen in" to communications.