Apple Remote Desktop - Manual (Page 52)

52 Chapter 2 Setting Up
To enable User Mode:
1 Make sure you are logged in as an administrator user.
2 Open Remote Desktop.
3 Choose Remote Desktop > Preferences.
4 Click the Restricted Access button.
5 Enable or disable features, as desired.
6 Close the Preference’s window.
Authentication and Data Transport Encryption
Authentication to Apple Remote Desktop clients uses an authentication method which
is based on a Diffie-Hellman Key agreement protocol that creates a shared 128-bit key.
This shared key is used to encrypt both the name and password using the Advanced
Encryption Standard (AES). The Diffie-Hellman Key agreement protocol used in ARD 2 is
very similar to the Diffie-Hellman Key agreement protocol used in personal file sharing,
with both of them using a 512-bit prime for the shared key calculation.
With Remote Desktop 2, keystrokes and mouse events are encrypted when you control
Mac OS X client computers. This information is encrypted using the Advanced
Encryption Standard (AES) with the 128-bit shared key that was derived during
authentication.
Warning: If you are using ARD to manage computers over public networks, consider
using a virtual private network (VPN) solution to protect your information.