18 cards · Foundations, Practitioner, Applied, Advanced, Expert
Network interview questions and practice topics
Network security: TCP/IP and DNS attacks, firewalls and segmentation, TLS on the wire, lateral movement and network detection. Core ground for SOC, network and infrastructure roles.
Each card is a topic to explain out loud against the clock: 9 are real interview questions, the rest are concepts, live incidents and deep dives. Open one to see what a strong answer covers, or open cardosec and pick Network as a focus.
L1 Foundations What it is
L2 Practitioner How it works
L3 Applied Abuse and defence in real systems
- DNS TunnelingHow does DNS tunneling work, and how would you detect it?Explain · Interview · Deep dive
- Hunting with Flow DataDeep dive
- Lateral Movement over SMB/RDPExplain · Deep dive
- LLMNR and NBT-NS PoisoningAn internal pentester captured NetNTLMv2 hashes within minutes of plugging in. What happened and how do you fix it?Explain · Interview
- Long TXT Queries from FinanceWhat does this look like to you, and how do you respond?Incident · Interview
- TLS Inspection Trade-offsShould an enterprise decrypt TLS at the proxy? Argue both sides.Explain · Interview
- VLAN HoppingExplain
L4 Advanced Edge cases, bypasses, trade-offs
L5 Expert Research-grade, architecture-level
Other domains
Web AppSec · Identity & AD · Cloud · Cryptography · Blue team / DFIR · Malware & intel · Famous breaches · GRC · AI security