Countermeasures & Conclusion
So what can you do to prevent hackers from getting into your network? Special Agent Bickers and his team have some tips for wireless users. He stresses that these are mainly for home users and should not be considered as official FBI best practices for businesses.
1) Network segregation
Put your access point on a separate subnet, with a firewall separating the wireless and internal users
2) Change the default settings on your access point
Default settings (SSID, administrator password, channel) are well known and even included as part of some WLAN attack tools
3) Use WPA with a strong key
WPA is a definite improvement over WEP in providing wireless security. But the version intended for home and SOHO use—WPA-PSK—has a weakness shared by any passphrase security mechanism. The choice of simple, common and short passphrases may allow your WPA-protected WLAN to be quickly compromised via dictionary attack (more info here).
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