Rename the Administrator account. Use alpha-numeric naming conventions for user names and passwords. Set up NT to lockout an account after several unsuccessful logon attempts. Use an Administrator decoy account to divert intruders into this fake honey-pot. Authentication ensures a received packet was indeed transmitted by the source identified in the packet header, and ensures that nothing has altered the packet in transit.
Privacy enables communicating nodes to encrypt messages to prevent eavesdropping by third parties.
IP authentication services provide client workstations authentication directly to servers, which can be either on the same network or on a external network. Another application for the service is to allow a remote workstation to authenticate itself to a corporate firewall, providing valid workstations access to an entire internal network. For this mode, the ESP header goes into the IP packet immediately before the transport-layer header. Transport-mode operation provides privacy for any application that uses it, avoiding the need to implement privacy in each application. It is possible thought to conduct traffic analysis on the transmitted packets since the destination and source addresses are in plain text.