Barracuda Networks VERSION SP4 - Manual (Page 151)

149 Barracuda NG Access Monitor
Chapter 11
Barracuda NG Access Monitor
11.1 Overview
11.1.1 Access Monitor
The Access Monitor is the key component of Barracuda NG Network Access Client. Its responsibilities
include:
• Collecting information from the client computer necessary for health
evaluation, including
• Workstation identity information
• Operating system information and patch level
• Antivirus and Antispyware information
• Communication with the Access Control Server
• Taking security measurements dependent on the health evaluation result
returned by the Access Control Server. This includes
• Downloading and installing necessary updates
• Restricting network access
• Executing Antivirus / Antispyware updates and starting scans or updates
11.1.2 Port Security
The Barracuda NG Network Access Client implements the IEEE 802.1X standard. The IEEE 802.1X
standard defines a client-server-based access control and authentication protocol that prevents
unauthorized clients from connecting to a LAN through publicly accessible ports unless they are
authenticated. The credentials for authentication are obtained by the client computer from the Access
Control Server, based on the client computer's health evaluation result, restricting or granting network
access to the client computer.