Mac to windows/ubuntu adhoc internet sharing
Mac to Ubuntu adhoc
1. System Preferences -> Sharing -> Internet Sharing -> AirPort -> AirPort Options
Chanel: Automatic
WEP: Enabled
Password: 13 symbol anything (I used 9 letters and 4 numbers)
WEP key length: 128-bit
2. Save and start sharing. (This should create network)
3. Ubuntu -> Find network clicking on WiFi icon
4. Connect to using that key (key type should be 128 passphrase and not 40/128)
5. Goto Network Connections -> Wireless Tab -> Edit connection -> Security -> Switch from Open to Shared
6. Reconnect
For windows see: http://hintsforums.macworld.com/showthread.php?t=79326