A+, Network+, Security+ Exams in a Nutshell

Communication Security

Communication security refers to protection of data transmitted over the network cables or wireless networks. The main purpose of communication security is to ensure authenticity, confidentiality, integrity, and availability of data while it is transferred from one location to another. Measures taken to ensure communication security include securing remote access systems, messaging systems, wireless networks, and web services. Secure transmission methods must be implemented whether the data is transmitted between internal users of the organization within a single location, or between an organization and its trusted external users located at multiple remote locations.

In this section, I will cover the following aspects of communications security:

• Remote access

• Email security

• Internet security concepts

• Directory Services security

• File Transfer protocols

• Wireless communications

Remote Access

This section covers remote access protocols and authentication methods, their vulnerabilities, and methods of protection against possible attacks. There are several technologies used to provide remote access to users who require access to the internal resources of an organization. Administrators must ensure that these users are granted secure access to the internal network, but at the same time, unauthorized access must be prevented. There has to be a balance between implementing security and granting access. Remote access security is generally implemented using secure protocols and ...