The convenience of wireless networks is also the greatest risk to security. Wireless networks can’t be contained inside your office or house like a wired network, so they’re more vulnerable to a network breach. Security measures, however, make it much harder to do anything with those signals, or compromise your network. Check out this list of security standards for Wi-Fi networks:
| Security Type | Infrastructure Requirements | Security Level |
|---|---|---|
| WEP | WEP-compatible AP and network adapters | Low, easily cracked by active or passive attacks |
| WPA (PSK) | WPA-compatible AP and network adapters | High, vulnerable to password cracking (dictionary) attacks |
| WPA Enterprise | WPA Enterprise-compatible AP and network adapters, RADIUS server | Very high |
| WPA2 (PSK and Enterprise) | WPA2-compatible AP, network adapter (RADIUS for Enterprise) | Extremely high; adds AES (Advanced Encryption System), which could take millions of years to crack with current technology |
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Source:http://www.dummies.com/how-to/content/wireless-security-standards.html
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