Secure Networked System with Firewall and IDS

University of Colorado System via Coursera

Go to Course: https://www.coursera.org/learn/secure-networked-system-with-firewall-ids

Introduction

### Course Review: Secure Networked System with Firewall and IDS In an age where cybersecurity threats are increasingly sophisticated and prevalent, the necessity of acquiring knowledge in network security cannot be overstated. Coursera’s course titled **"Secure Networked System with Firewall and IDS"** provides an exceptional opportunity for anyone looking to gain comprehensive insights into securing network systems through the utilization of firewalls and Intrusion Detection Systems (IDS). #### Course Overview This course is a well-structured and detailed exploration of key concepts in network security, focusing on the deployment and management of firewalls as well as the implementation of IDS. It encompasses critical areas such as: - The foundational components of network security. - The construction of a dual-firewall Demilitarized Zone (DMZ) to enhance protection. - The development and enforcement of security policies. - An extensive examination of the Linux firewall, iptables. - A thorough understanding of Network IDS and Host IDS, with a deep dive into Snort—a widely used open-source intrusion detection system. The curriculum is designed to cater to both novices in the field and experienced practitioners seeking to refresh their skills or deepen their knowledge. #### Syllabus Breakdown 1. **Secure Network Defense:** This module lays the groundwork for understanding how to create an effective DMZ firewall system with dual firewalls. Students will learn to define critical security policies and their enforcement, as well as security design principles that are crucial to establishing a robust firewall system. This module is pivotal in ensuring learners appreciate the importance of layered security in protecting networked systems. 2. **Implement Firewall with Linux IPTable:** Moving into practical applications, this section delves into the utility of Linux iptables for establishing firewall rules. Participants will gain hands-on skills in packet filtering and address port translation (using SNAPT or DNAT). The emphasis on security policies here is particularly beneficial for those looking to implement real-world firewall solutions using Linux systems. 3. **Intrusion Detection Systems:** The final module introduces students to Snort IDS, highlighting its evaluation and performance as a network security solution. The course provides an overview of Host IDS, which is essential for understanding how to monitor individual machines within a network. This module empowers students not only to deploy IDS solutions but also to assess their performance critically. #### Course Recommendation I highly recommend the **"Secure Networked System with Firewall and IDS"** course to anyone interested in enhancing their knowledge of network security. Whether you are a cybersecurity professional, a network administrator, or someone simply passionate about tech security, this MOOC offers valuable insights and practical skills that are directly applicable to the industry. The hands-on approach, particularly with tools like Linux iptables and Snort, ensures that learners not only gather theoretical knowledge but also gain practical experience that can be applicable in real-world scenarios. Furthermore, the structured layout of the course makes it easy to follow, allowing students to pace their learning effectively. In conclusion, if you are serious about securing networked systems and developing a robust understanding of firewalls and intrusion detection systems, enrolling in this Coursera course will undoubtedly be a step in the right direction for your career in cybersecurity.

Syllabus

Secure Network Defense

In this module, we will learn how to construct an DMZ firewall system with dual firewalls to protect a site. We will also learn how to define critical security policies, their enforcement procedures, and apply related security design principles for the firewall system.

Implement Firewall with Linux IPTable

In this module, we will learn how to use Linux iptables to implement firewall rules for filtering packets, and SNAPT or DNAT address port translation, and the security policies.

Intrusion Detection Systems

In this module we will introduce the Snort IDS, discuss evaluation and performance of network firewalls, and finally cover Host IDS.