Virtual Local Area Networks (VLANs) are essential for segmenting network traffic to enhance security and performance. However, misconfigurations can expose networks to VLAN hopping attacks, where malicious actors gain unauthorized access to traffic on different VLANs.
The article from Internetworks delves into the two primary methods of VLAN hopping: switch spoofing and double tagging. Switch spoofing exploits the Dynamic Trunking Protocol (DTP) by tricking switches into forming trunk links, granting attackers access to multiple VLANs. Double tagging involves inserting two VLAN tags into a frame, allowing it to traverse VLAN boundaries undetected.
To mitigate these threats, the article recommends several best practices: disabling DTP on all access ports, configuring switch ports explicitly as access ports, avoiding the use of VLAN 1 for user traffic, enabling port security to restrict MAC addresses, shutting down unused ports, and implementing Private VLANs (PVLANs) for added isolation. Regular monitoring and auditing of VLAN configurations are also crucial in maintaining network security.
The "Website Hacking Techniques" course offered by EC-Council's CodeRed platform is designed to equip learners with practical skills in identifying and exploiting common web vulnerabilities. The course emphasizes hands-on experience, allowing participants to simulate real-world hacking scenarios and understand the methodologies employed by attackers. By engaging with these simulations, learners can gain insights into the tactics used to compromise websites and the importance of robust security measures.
Throughout the course, participants explore various tools and techniques essential for web application penetration testing. This includes understanding the intricacies of different attack vectors and how to effectively utilize tools to uncover and exploit vulnerabilities. The curriculum is structured to provide a comprehensive understanding of the web hacking landscape, ensuring that learners are well-equipped to assess and enhance the security posture of web applications.(EC-Council Learning)
By completing this course, individuals not only gain valuable knowledge in web security but also earn a certificate of completion from EC-Council. This certification serves as a testament to their proficiency in website hacking techniques and can be a valuable addition to their professional credentials. Whether you're an aspiring ethical hacker or a cybersecurity professional looking to deepen your expertise, this course offers a structured pathway to mastering the art of web application security.
Using the Command Line Interface (CLI) on #Ubiquiti EdgeRouters opens the door to powerful, fine-tuned control that the graphical UI simply can't match. Whether you're configuring advanced routing rules, managing firewall policies, or scripting automated tasks, the CLI provides a deeper, more efficient means of managing your network infrastructure. It enables network administrators to execute changes quickly, troubleshoot with precision, and unlock features that may not be accessible via the GUI—making it an indispensable tool for professionals seeking robust and scalable setups.
One of the most impactful security features you can implement via the CLI is GeoIP blocking. By filtering traffic based on geographic origin, administrators can dramatically reduce attack surfaces, blocking high-risk countries from accessing sensitive services like SSH, VPN, or remote management. When combined with the CLI, setting up GeoIP filtering becomes a flexible and powerful defense mechanism, protecting your network from unwanted intrusion while giving you granular control over who can connect and from where. This level of security customization is vital in today’s threat landscape, especially for SMBs and IT professionals managing remote access points.
