🔐 Cybersecurity

Ethical hacking, penetration testing, network security, CTFs and defensive security

Cybersecurity

GNS3 Talks: Ostinato Wireshark Captures Part 1: Capture STP BPDUs & craft own (Ostinato Part 10)

David Bombal Intermediate 8y ago

Cybersecurity

CCNA #074 OSPF Multi-area configuration and testing for the CCNA Exam (Part 2)

David Bombal Beginner 8y ago

Cybersecurity

CCNA #073 OSPF Multi-area configuration and testing for the CCNA Exam (Part 1)

David Bombal Beginner 8y ago

Cybersecurity

CCNA #072 Using Ostinato to prove how broadcasts work for the CCNA Exam (Part 2)

David Bombal Beginner 8y ago

Cybersecurity

CCNA #071 Using Ostinato to prove how broadcasts work for the CCNA Exam (Part 1)

David Bombal Beginner 8y ago

Cybersecurity

CCNA #070 Using Ostinato to prove how networks work for the CCNA Exam. Don't be bitten!

David Bombal Beginner 8y ago

Cybersecurity

CCNA #069 MAC Address troubleshooting scenario 1: Can you find the issue?

David Bombal Beginner 8y ago

Cybersecurity

CCNA #068 How to configure Layer 3 switching and interVLAN routing for the CCNA Exam (Part3)

David Bombal Beginner 8y ago

Cybersecurity

CCNA #067 How to configure Layer 3 switching and interVLAN routing for the CCNA Exam (Part2)

David Bombal Beginner 8y ago

Cybersecurity

CCNA #066 How to configure Layer 3 switching and interVLAN routing for the CCNA Exam (Part1)

David Bombal Beginner 8y ago

Cybersecurity

CCNA #065 Routed ports, Switchports and SVIs - what and how?

David Bombal Beginner 8y ago

Cybersecurity

GNS3 Talks: Fast IOSv boot

David Bombal Intermediate 8y ago

Cybersecurity

CCNA #064 Troubleshooting IPv6 networks for the CCNA exam (Part 3). Can you find the issue?

David Bombal Beginner 9y ago

Cybersecurity

GNS3 Talks: Stop BPDUs from Ostinato breaking STP using STP Root Guard (Ostinato Part 9)

David Bombal Intermediate 9y ago

Cybersecurity

CCNA #063 Troubleshooting IPv6 networks for the CCNA exam (Part 2). Can you find the issue?

David Bombal Beginner 9y ago

Cybersecurity

CCNA #062 Troubleshooting IPv6 networks for the CCNA exam (Part 1). Can you find the issue?

David Bombal Beginner 9y ago

Cybersecurity

GNS3 Talks: Make your PC the Spanning Tree Root by crafting BPDUs with Ostinato (Ostinato Part 8)

David Bombal Intermediate 9y ago

Cybersecurity

CCNA #061 Did RIP or something else break the network? Can you find the issue?

David Bombal Beginner 9y ago

Cybersecurity

CCNA #060: LAN and WAN troubleshooting Scenario: Can you find the issues?

David Bombal Beginner 9y ago

Cybersecurity

CCNA #059 RIP Troubleshooting Scenario 3: Can you find the issue?

David Bombal Beginner 9y ago

Cybersecurity

GNS3 Talks: Learn Linux with Cumulus Linux and GNS3 (Part 3). Ideal for networkers to learn Linux.

David Bombal Beginner 9y ago

Cybersecurity

CCNA #058 RIP Troubleshooting Scenario 2: Can you find the issue?

David Bombal Beginner 9y ago

Cybersecurity

CCNA #057 RIP Troubleshooting Scenario 1: Can you find the issue?

David Bombal Beginner 9y ago

Cybersecurity

GNS3 Talks: Learn Linux with Cumulus Linux and GNS3 (Part 2). Ideal for networkers to learn Linux.

David Bombal Beginner 9y ago

Cybersecurity

GNS3 Talks: Learn Linux with Cumulus Linux and GNS3 (Part 1). Ideal for networkers to learn Linux.

David Bombal Beginner 9y ago

Cybersecurity

CCNA #056 DHCP Troubleshooting Scenario 3 - Can you find the issue?

David Bombal Beginner 9y ago

Cybersecurity

CCNA #055 DHCP Troubleshooting Scenario 2 - Can you find the issue?

David Bombal Beginner 9y ago

Cybersecurity

GNS3 Talks: OpenFlow FLOW MOD, PACKET IN, PACKET OUT and more captures using Wireshark and GNS3

David Bombal Intermediate 9y ago

Cybersecurity

GNS3 Talks: OpenFlow captures using Wireshark, Docker containers, OpenDaylight, SDN

David Bombal Beginner 9y ago

Cybersecurity

GNS3 Talks: Ostinato Packet Generator - double tag 802.1Q frames for VLAN hopping (Ostinato Part 7)

David Bombal Intermediate 9y ago

Cybersecurity

GNS3 Talks: Ostinato Packet Generator - Inject 802.1Q frames for VLAN hopping (Ostinato Part 6)

David Bombal Intermediate 9y ago

Cybersecurity

CCNA #052 Campus troubleshooting scenario 3: Can you find the issue?

David Bombal Beginner 9y ago

Cybersecurity

GNS3 Talks: Ostinato Packet Generator - Craft packets to hack network devices (Ostinato Part 5)

David Bombal Intermediate 9y ago

Cybersecurity

CCNA #051 CCNA IP addressing and subnetting: Can these hosts ping each other?

David Bombal Intermediate 9y ago

Cybersecurity

GNS3 Talks: Ostinato Packet Generator - Broadcast traffic: What happens? (Ostinato Part 4)

David Bombal Intermediate 9y ago

Cybersecurity

GNS3 Talks: Ostinato Packet Generator - Multicast traffic: what happens? (Ostinato Part 3)

David Bombal Intermediate 9y ago

Cybersecurity

GNS3 Talks: Create a Docker based network using OVS and Linux Containers

David Bombal Beginner 9y ago

Cybersecurity

GNS3 Talks: Ostinato Packet Generator - what happens to Unknown Unicast traffic? (Ostinato Part 2)

David Bombal Intermediate 9y ago

Cybersecurity

CCNA #049 IPv6 static routing using next hop IPv6 address (IPv6 routing Part 2)

David Bombal Beginner 9y ago

Cybersecurity

CCNA #048 IPv6 initial configuration and static routing using local interface (IPv6 routing Part 1)

David Bombal Beginner 9y ago

Cybersecurity

GNS3 Talks: Ostinato Packet Generator and GNS3 - download, install and configure (Ostinato Part 1)

David Bombal Intermediate 9y ago

Cybersecurity

CCNA #047 DHCP Troubleshooting Scenario 1 - Can you find the issue?

David Bombal Beginner 9y ago

Cybersecurity

GNS3 Talks: Ubuntu Docker Container, OpenDaylight, Python, SDN Part 3

David Bombal Beginner 9y ago

Cybersecurity

GNS3 Talks: Ubuntu Docker Container, OpenDaylight, Python, SDN Part 2

David Bombal Beginner 9y ago

Cybersecurity

CCNA #046 NAT Troubleshooting Scenario 5 - Can you find the issue? CCNA Exam 200-125 troubleshooting

David Bombal Beginner 9y ago

Cybersecurity

GNS3 Talks: Ubuntu Docker Container, OpenDaylight, Python, SDN Part 1

David Bombal Beginner 9y ago

Cybersecurity

CCNA #045 Users cannot ping? Which layer of the OSI model broke?

David Bombal Beginner 9y ago

Cybersecurity

CCNA #044 OSPFv3 route exchange without IP addresses. Possible?

David Bombal Beginner 9y ago

📚 Coursera Courses Opens on Coursera · Free to audit

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Self-paced

Seguridad informática: defensa contra las artes oscuras digitales

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Advanced Security Strategies and Incident Response

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Introduction to Cybersecurity Tools & Cyberattacks

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Advanced Incident Handling and Analysis Techniques

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Introduction to Detection and Incident Response

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Self-paced

Metasploit for Beginners: Ethical Penetration Testing

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Managing Cybersecurity Incidents and Disasters

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Ethical Hacking Essentials (EHE)

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Security Hardening

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Cybersecurity Concepts

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Ethical Hacking with Kali Linux: Analyze & Defend

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CISSP Crash Course

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Advanced Network Services, Security, and Programmability

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Empower Patients: Autonomy Through Simulation and Role-Play

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IT-Sicherheit: Grundlagen für Sicherheitsarchitektur

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CompTIA A+ Core 2 (220-1202)

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Ethical Hacking - Capture the Flag Walkthroughs - v2

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AWS: Network Security, Compliance and Governance

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