The update adds Point-to-Point Protocol over Ethernet, and DHCP client-ID support, giving AirPort the functionality required by many Internet Service Providers.
The AirPort Base Station and AirPort Card have been awarded Wi-FiTM certification, ensuring interoperability between various manufacturers' wireless-networking products.
Security on the update has not been improved, though. Researchers from Berkeley University, California recently discovered that the Wired Equivalent Privacy (WEP) algorithm that Airport uses to protect against wireless communication from unauthorized access - is susceptible to hackers who attack network traffic.
WEP relies on a secret key, shared between a mobile station - for example a laptop with a wireless ethernet-card - and an access point, such as a Base Station. The key is used to encrypt packets before transmission. Hackers could attack this key to capture the binary code present in data-streams and rebuild it with algorithms.