Skills › Cybersecurity

Network Security

Secure networks — firewalls, IDS/IPS, VPNs, and zero-trust architecture.

intermediate 🔐 Cybersecurity
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After this skill you can…

  • Configure a firewall with proper inbound/outbound rules
  • Detect intrusions with Snort or Suricata
  • Design a zero-trust network architecture

Prerequisites

Watch (10 videos)

GNS3 Labs: DMVPN, IPsec and NAT across BGP Internet routers: Answers Part 7
David Bombal · beginner hands-on
→ Configure DMVPN→ Implement IPsec→ Set up NAT across BGP routers
HackTheBox - Intentions
IppSec · beginner hands-on
→ Conduct penetration testing→ Identify vulnerabilities in web applications
HackTheBox - Trickster
IppSec · beginner hands-on
→ Perform nmap scans→ Bypass WAFs→ Exploit known vulnerabilities
Capture and Replay Phone Calls with Kali Linux and Wireshark (MITM / VoIP replay)
David Bombal · intermediate hands-on
→ Capture VoIP phone calls→ Replay RTP packets
[Demo] Network Security Integration with Palo Alto
Google Cloud Tech · beginner hands-on
→ Deploy Network Security Integration→ Configure next generation firewall policies→ Integrate third party network virtual appliances
Network security fundamentals: Creating layered network defenses with built-in tools
Google Cloud · beginner hands-on
→ Create layered network defenses→ Configure firewall rules
HackTheBox - MetaTwo
IppSec · beginner hands-on
→ Conduct a network scan with nmap→ Exploit a vulnerability with SQLMap
HackTheBox - Kotarak
IppSec · beginner hands-on
→ Identify SSRF vulnerabilities→ Exploit vulnerabilities using nmap and wfuzz
WiFi Hacking Watch #shorts
David Bombal · intermediate hands-on
→ Conduct WiFi deauthentication attacks→ Understand WiFi protocol vulnerabilities
HackTheBox - Snoopy
IppSec · beginner hands-on
→ Exploit DNS vulnerabilities→ Hack web applications

Read (10 articles)

📄
What a VPN Actually Protects You From (A Developer's Threat Model)
Dev.to · Romeo Mihalcea · 2026-04-21
📄
Multi-Layered Defense: Building an Intelligent, Dual-Trigger Firewall
Dev.to · Okeoghene Akwerigbe · 2026-04-29
📄
Provisioning SSL Certificate
Dev.to · Viktor Vasylkovskyi · 2026-05-06
📄
Dynamic Challenge in openVPN
Dev.to · Fadi Hamwi · 2026-05-09
📄
Cómo construimos un SOC con honeypot e IA local
Dev.to · Yoandy Ramirez Delgado · 2026-05-14
📄
ASN Lookup for Security Engineers: From Concept to Code
Dev.to · ABDULLAH AFZAL · 2026-05-19