What the student will learn
By completing this tutorial, students will be able to:
- Configuring Firewall Rules to Prevent Brute Force Attacks
- Use of Port Knocking as a Security Mechanism
- Preventing UDP Flood Attacks
- Monitoring and Adjusting Firewall Rules
- Implementation of Security Measures Against Port Scanning
- Defense Against ICMP Flood and Smurf Attacks
- Handling TCP SYN Attacks
- Simulation and Testing of Attacks
Requirements
- Understand basic networking concepts, such as network types (LAN, WAN), network topologies, and OSI/TCP-IP models.
- Know the differences between public and private IP addresses, and how they are used in networks.
- Have knowledge of subnets, netmasks and IP addressing.
- Understand the basic concepts of routing and switching in networks.
- Know how Dynamic Host Configuration Protocol (DHCP) and Domain Name System (DNS) work.
- Understand the assignment of dynamic and static IPs.
General Purpose
Provide a deep understanding of how to configure firewall rules on MikroTik routers to prevent brute force attacks, port scanning, UDP Flood, ICMP Smurf, and TCP SYN attacks, thus ensuring the integrity and availability of network services and the protection of data.
Advanced Level Settings
The general rules of basic firewall protection are explained in detail in the Tutorial (ML-005) Guide for Firewall Configuration in MikroTik RouterOS.
This tutorial develops advanced security rules that complement the ML-005 tutorial
Objectives by Chapter
Rules to prevent Brute Force attacks:
- Teach you how to identify and configure rules to limit failed login attempts and temporarily block suspicious IP addresses.
- Highlight the importance of complex passwords and how to configure the router to require them.
Firewall rules to prevent Port Scanning:
- Explain how to detect and prevent port scanning attempts using specific combinations of TCP flags.
- Instruct on configuring rules to block IP addresses that perform suspicious scans.
Firewall rules to allow access with Port Knocking
- Demonstrate how to configure a Port Knocking mechanism to hide services until a specific “knock” sequence is performed.
- Discuss selecting ports and configuring temporary rules to allow access to protected services.
Firewall rules against UDP Flood attacks
- Illustrate configuring rules to block unsolicited UDP traffic, especially on port 53 (DNS), to mitigate UDP Flood attacks.
- Provide practical examples using attack simulation tools.
Firewall rules against ICMP Smurf attacks
- Teach how to prevent ICMP Flood and Smurf attacks by configuring rules that block unwanted ICMP traffic directed to broadcast addresses.
- Discuss the importance of properly adjusting these rules to avoid blocking legitimate traffic.
Firewall rules against TCP SYN attacks
- Present methods to block attacks based on unsolicited TCP SYN requests, minimizing the impact on router resources.
- Offer techniques to test the effectiveness of the implemented rules.
At the end of this Tutorial
By completing this tutorial, students will be able to:
- Understand and apply network security principles to protect MikroTik routers against a variety of common attacks.
- Setup Advanced firewall rules to detect and block malicious traffic while maintaining the functionality of legitimate services.
- Use diagnostic and attack simulation tools to verify and adjust the effectiveness of implemented firewall rules.
- Improve the overall security of your networks by implementing password and access management best practices.
- To adapt and expand the security configurations presented to meet the specific needs of your network environments, thus ensuring robust and flexible protection against emerging threats.
This tutorial provides a solid foundation in MikroTik network security, preparing students to effectively address and mitigate the risks associated with the most common attacks in the cybersecurity space.
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in version 7 RouterOS
$12,99
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(ML-006) Filtering threats: Firewall rules to protect the router from common attacks on the network
in version 7 RouterOS