Sometimes overlooked in this mix is security. The Nebula environment is carefully secured at the network and desktop levels, to ensure confidentiality and stability. This page outlines the security measures taken by Nebula system engineers. Domain controllers are replicated at two sites, and are located in machine rooms with limited physical access.
All incoming email is scanned for known viruses.
An account lockout policy is enabled to detect and prevent attempts at guessing passwords. This software is updated on a weekly basis. Supported email software is configured to use SSL encryption. All terminal sessions to remote hosts use SSH encryption. Operating system and web browser updates are applied via a central distribution.