Barrapunto

Description: Automatically adapt laptop ethernet
  The laptop-net package supports the built-in ethernet of laptops by
  providing several integrated features that automatically adapt the
  laptop to the network environment. The package is easily configured
  to support a wide variety of network environments, and supports
  manual as well as automatic management of the network interface.
  .
  Laptop-net can automatically: start and stop the network interface at
  appropriate times; disable the network interface when the network
  cable is removed, and enable it when the cable is inserted; select
  the network interface's IP address, either by probing the network for
  known hosts or by use of the DHCP protocol; customize the laptop's
  software configuration to match the network interface's IP address.

interesante el programa ese pero tiene un inconveniente, y es que es solo para adaptadores ethernet cableados, de todas maneras gracias porque el buscar informacion sobre él he llegado a conocer esto:

wpa_supplicant [epitest.fi]
wpa_supplicant is a WPA Supplicant for Linux, BSD and Windows with support for WPA and WPA2 (IEEE 802.11i / RSN). It is suitable for both desktop/laptop computers and embedded systems. Supplicant is the IEEE 802.1X/WPA component that is used in the client stations. It implements key negotiation with a WPA Authenticator and it controls the roaming and IEEE 802.11 authentication/association of the wlan driver.