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Originally Posted by david.ewles
Hiding your SSID is a MUST IMHO. if they can see it there one step closer to getting free access to you computer and BB access.
fishyweb read the link in my sig for setting of wi-fi security this might help you.
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The single most valuable security step that you can take is to use WPA-PSK encryption.
If I'm on your LAN, I'll steal an IP address. I'll spoof a MAC address as this is included in any packets sent (so the router can route). Your SSID is available in the 'air' anyway, so I'll sniff that.
WPA-PSK will cause me a BIG headache, especially if you use a long or complicated key (not using words in the dictionary!).
Really, SSID / MAC address / IP address methods are near-pointless for deterring foreign users of your WLAN. They're good for controlling permitted users (e.g. for access at certain times, QoS etc.).