I have a NAS LACIE 2Tb BigDisk server.
I can't connect to the disk as I get the following error:
This didn't happen in Snow Leopard. How can I solve this?
Mac OS X Lion doesn't support the authentication DHCAST128 anymore (for security reasons apparently).
To reactivate it, you need to enter the following lines of code in Terminal:
sudo chmod o+w /Library/Preferences defaults write /Library/Preferences/com.apple.AppleShareClient afp_host_prefs_version -int 1
After a restart, you should try to connect to the NAS through an AFP-Share (which will give you an Error Message again). A new connection profile should now have appeared in your "/Library/Preferences". Now you only need to enter the following commands to enable DHCAST128 support:
sudo defaults write /Library/Preferences/com.apple.AppleShareClient afp_disabled_uams -array "Cleartxt Passwrd" "MS2.0" "2-Way Randnum exchange" sudo chmod o-w /Library/Preferences
After another restart, the NAS connection should work.
In case you want to desactive DHCAST128 autentication again you need to type the following line:
sudo defaults write /Library/Preferences/com.apple.AppleShareClient afp_disabled_uams -array-add "DHCAST128"