🔐 Cybersecurity

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

Cybersecurity

CCIEPython: Learn Python programming with David Bombal: Python 2 or Python 3?

David Bombal Beginner 8y ago

Cybersecurity

CCIEPython: Learn Python programming with David Bombal: Python Dictionaries and Netmiko (Part 2)

David Bombal Beginner 8y ago

Cybersecurity

CCIEPython: Learn Python programming with David Bombal: Python Dictionaries and Netmiko (Part 1)

David Bombal Beginner 8y ago

Cybersecurity

GNS3 Talks: How to import Docker containers into GNS3: your own or others available on Docker Hub.

David Bombal Beginner 8y ago

Cybersecurity

GNS3 Talks: WordPress Docker appliance now available! Add web servers to your GNS3 Topologies.

David Bombal Beginner 8y ago

Cybersecurity

GNS3 Talks: Docker Ubuntu container not getting DHCP IP address (Part 2 - Windows). Troubleshooting.

David Bombal Beginner 8y ago

Cybersecurity

GNS3 Talks: Docker Ubuntu container not getting DHCP IP address (Part 1 - MAC). Troubleshooting GNS3

David Bombal Beginner 8y ago

Cybersecurity

CCNA #087: MPLS Part 4: Core MPLS Labels - CEF, forwarding tables, Wireshark captures, tracing

David Bombal Beginner 8y ago

Cybersecurity

GNS3 Talks: Ostinato Wireshark Captures Part 5: Capture and generate GNS3 switch CDP messages

David Bombal Intermediate 8y ago

Cybersecurity

GNS3 Talks: Ostinato Wireshark Captures Part 4: Generate packets with COS and DSCP settings

David Bombal Intermediate 8y ago

Cybersecurity

GNS3 Talks: Ostinato Wireshark Captures Part 3: Capture IP Phone CDP messages & craft your own

David Bombal Intermediate 8y ago

Cybersecurity

GNS3 Talks: Ostinato Wireshark Captures Part 2: Capture IP Phone CDP messages & craft your own

David Bombal Intermediate 8y ago

Cybersecurity

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

David Bombal Intermediate 8y ago

Cybersecurity

CCNA #069 MAC Address troubleshooting scenario 1: 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

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

David Bombal Intermediate 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

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 #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

Cybersecurity

GNS3 Talks: ipterm: Linux, Docker, Python, SDN and more! Part 3

David Bombal Beginner 9y ago

Cybersecurity

GNS3 Talks: ipterm: Linux, Docker, Python, SDN and more! Part 2

David Bombal Beginner 9y ago

Cybersecurity

CCNA #043 Campus troubleshooting scenario 2: Can you find the issue?

David Bombal Beginner 9y ago

Cybersecurity

CCNA #042 Campus troubleshooting scenario 1: Can you find the issue?

David Bombal Beginner 9y ago

Cybersecurity

GNS3 Talks: ipterm: Linux, Docker, Python, SDN and more! Part 1

David Bombal Beginner 9y ago

Cybersecurity

CCNA #041 - OSPF DR, BR and DROTHER Election - do you know the answers?

David Bombal Beginner 9y ago

Cybersecurity

CCNA #040 NAT Troubleshooting Scenario 4 - Can you find the issue? CCNA Exam 200-125 troubleshooting

David Bombal Beginner 9y ago

📚 Coursera Courses Opens on Coursera · Free to audit

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📚 Coursera Course ↗

Self-paced

Handling Security Incidents Across Domains

Opens on Coursera ↗

📚 Coursera Course ↗

Self-paced

An Introduction to Cryptography

Opens on Coursera ↗

📚 Coursera Course ↗

Self-paced

Introduction to Google Security Operations (SIEM)

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📚 Coursera Course ↗

Self-paced

Secure Against Network Intrusions

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📚 Coursera Course ↗

Self-paced

Cybersecurity Fundamentals for High-Tech Manufacturing

Opens on Coursera ↗

📚 Coursera Course ↗

Self-paced

System & Network Security Essentials

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📚 Coursera Course ↗

Self-paced

Identifying Security Vulnerabilities

Opens on Coursera ↗

📚 Coursera Course ↗

Self-paced

Homeland Security and Cybersecurity Future

Opens on Coursera ↗

📚 Coursera Course ↗

Self-paced

Cloud Security for IT Professionals

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📚 Coursera Course ↗

Self-paced

Web Hacking Expert - Full-Stack Exploitation Mastery

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📚 Coursera Course ↗

Self-paced

Technical Deep Dive with Incident Response Tools

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📚 Coursera Course ↗

Self-paced

Social Engineering Expert

Opens on Coursera ↗

📚 Coursera Course ↗

Self-paced

Legal and Ethical Cyber Investigations

Opens on Coursera ↗

📚 Coursera Course ↗

Self-paced

JavaScript Security Part 1

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📚 Coursera Course ↗

Self-paced

Biohacking Your Brain's Health

Opens on Coursera ↗

📚 Coursera Course ↗

Self-paced

IT & Cloud Audit Masterclass – Fundamentals to Advanced

Opens on Coursera ↗

📚 Coursera Course ↗

Self-paced

Linux Fundamentals: Configure, Secure & Manage

Opens on Coursera ↗

📚 Coursera Course ↗

Self-paced

Cryptography: Learn Public Key Infrastructure from Scratch

Opens on Coursera ↗