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
Google Cloud Packet Mirroring with OpenSource IDS
Coursera · intermediate hands-on
→ Configure Packet Mirroring for network security→ Deploy OpenSource IDS on Google Cloud
HackTheBox - Trickster
IppSec · beginner hands-on
→ Perform nmap scans→ Bypass WAFs→ Exploit known vulnerabilities
Building a High-throughput VPN
Coursera · intermediate hands-on
→ Create a secure high-throughput VPN→ Test VPN speed
Configuring Network Connectivity Center as a Transit Hub
Coursera · intermediate hands-on
→ Configure Network Connectivity Center as a Transit Hub→ Interconnect non-Google networks
VPC Flow Logs - Analyzing Network Traffic
Coursera · intermediate hands-on
→ Configure VPC Flow Logs for network traffic analysis→ Export logs to BigQuery for analysis
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
HackTheBox - MetaTwo
IppSec · beginner hands-on
→ Conduct a network scan with nmap→ Exploit a vulnerability with SQLMap

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
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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