Chapter 1
Networking Concepts
Course: Comptia Network N10 009 Practice Test
Subject: Comptia Network N10 009
Chapter: This Chapter Will Entail The Following Lessons
Network security features and defense techniques are essential for protecting devices, networks, and data from unauthorized access, attacks, and breaches. Below is an explanation of these techniques and solutions with real-life applications and best practices.
1. Device Hardening
Device hardening refers to the process of securing network devices (e.g., routers, switches, servers, firewalls, and IoT devices) by minimizing vulnerabilities, limiting access, and reducing the attack surface. This proactive approach is essential for preventing unauthorized access and maintaining a secure network infrastructure.
1.1 Disable Unused Ports and Services
Definition:
Disabling unnecessary network ports and services on devices to reduce the chances of exploitation. Ports and services that are not actively required can become potential entry points for attackers.
Technical Details:
- Network devices often have services like Telnet, FTP, and SNMP enabled by default, which can introduce security risks if not needed.
- For physical ports, such as Ethernet ports on switches, disabling unused ports prevents unauthorized devices from connecting to the network.