Network security can be described as the effort to create a secure computing
platform, designed so that agents (users or programs) cannot perform actions
that they are not allowed to perform, but can perform the actions that they
are allowed to.
Basic Network Security Tools. Firewalls protect a network by
analyzing the data leaving and entering, allowing authorized traffic through
while keeping unauthorized traffic out. Intrusion Detection Systems
(IDS) monitor traffic patterns and signal an alert if an attack takes
place. Secure Socket Layer (SSL) is a protocol to ensure secure
transmission of private information.