Infrastructure & Operations / Built / deployed
Network Payload Capture Pipeline
Minimal capability-bounded packet capture path that parses a live tcpdump stream into bounded payload snapshots consumed by the operations UI.
OVERVIEW
What I built.
Minimal capability-bounded packet capture path that parses a live tcpdump stream into bounded payload snapshots consumed by the operations UI.
Built a deliberately capability-bounded packet-capture runtime around tcpdump.
Disabled persistent PCAP storage and promiscuous mode while keeping only bounded parsed payload snippets.
Connected the resulting snapshots to the Operations Portal's network views.
SYSTEM ARCHITECTURE
How the system is divided.
Host network -> tcpdump container with CAP_NET_RAW -> host parser -> bounded rolling JSON snapshot -> operations UI.
The capture container is read-only and does not receive broad host privileges.
Long-term packet archives are intentionally avoided in this path.
NETWORK / DATA FLOW
What talks to what.
TECHNOLOGY STACK
The technical surface.
IMPLEMENTATION
How it works in practice.
- 01
Host network -> tcpdump container with CAP_NET_RAW -> host parser -> bounded rolling JSON snapshot -> operations UI.
- 02
The capture container is read-only and does not receive broad host privileges.
- 03
Long-term packet archives are intentionally avoided in this path.
TESTING & VALIDATION
How I know it works.
Container capability review
Read-only filesystem check
Promiscuous mode disabled
Bounded payload retention
Live snapshot consumption by UI
No persistent PCAP volume
EXTERNAL SERVICES & DEPENDENCIES
What sits outside the core.
ENGINEERING EVIDENCE
Artifacts behind the claims.
BOUNDARIES / CONSTRAINTS
What the project does not pretend to solve.
—Designed for debugging evidence, not unrestricted surveillance
—No persistent packet archive in this path
—Payload snippets are intentionally bounded
RESULT / CURRENT STATE
What this produced.
A narrow packet-evidence pipeline useful for debugging without turning the monitoring stack into an unrestricted capture appliance.