Are You Blind Inside Encrypted Traffic? Here’s How Metadata Restores Network Visibility


Yeah, I got really into DPI metadata collection as a type of application observability last week and how it can technically do this without having to decrypt the traffic. What was interesting was how workable it was for modern encrypted networks.

Practical points:

  • Over 95% of network data is now encrypted making conventional application monitoring techniques ineffective.
  • Packet capturing records the network traffic but does not reveal the functioning of an application
  • Parsing of metadata provides formatted data for HTTP, DNS, TLS, QUIC, DHCP, and RTP.
  • Faster issue isolation by separation at DNS, TLS, HTTP or transport layer.
  • Metadata can be searched to meet compliance standards and the payload data remains hidden.

Just to clarify deep visibility does not require payload decryption. Structured metadata, on the other hand, provides adequate data about how an application works without compromising the vital privacy bounds.

What I really got from it is that observability is so much better at getting the good metadata than it is at getting all the raw packet data.

Sharing more details below for anyone who wants to explore how metadata-driven observability improves troubleshooting and compliance readiness:

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