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DEEP PACKET INSPECTION

9. Deep Packet Inspection (DPI)

THE CHALLENGE

Detecting and stopping attacks that could cause massive network damage is a major challenge. Organisations often find it difficult to examine and monitor network traffic. With security being a huge concern, organisations are looking for improvement over conventional packet analysis that only examine packet headers because attackers are getting better at hiding malicious payloads in plain sight.

Security issues aside, mobile network operators are continually evaluating more innovative solutions to leverage in this dynamic time of communication. CSPs find it challenging to access customer’s unique data, which is beneficial in improving customer service, building loyalty with existing customers, and becoming a preferred provider for new customers.

THE TECHNICAL SOLUTION FROM CUBRO

Deep Packet Inspection (DPI) is an advanced monitoring technique and a useful application for telecom carriers. The main advantage of DPI is that it provides the most accurate information on bandwidth since it reads the packet. Analyzing digital traffic can reveal some very useful insights and help telcos identify general consumer behavior. For instance, how much time customers stay at a location, how often a customer frequents a specific location, which transport medium is the customer using to get to a location. Based on this information it is possible to optimize the availability of resources. By studying metadata using deep packet inspection (DPI), network specialists can learn how to best optimise servers to reduce overhead, detect hackers, combat malware, and get intimate details about user behavior.

On the engagement side, telcos can introduce innovative content-based plans to meet the needs of individual customers, study overall network usage to analyze aggregate behavior, and identify behavior patterns by application type. The operators can ensure service quality by implementing traffic control and bandwidth allocations, prioritize popular applications (e.g. YouTube, Netflix, Skype) over other less time-sensitive data. Additionally, from a revenue generating perspective, operators can create plans with different service levels enforced through DPI applications. Furthermore, DPI data enables operators to segment customers by their online behavior which, in turn, can help operators find alternate means of generating revenue.

DPI typically entails decoding of packets above OSI Layer 4. It is used to identify the network protocol. It is also used to identify the application.

Graphic DPI with Cubro EXA40

There are two major DPI applications and Cubro devices can perform both of these functions:

  • Filter with DPI and traffic steering - The Sessionmaster EXA can use its DPI features in the packet stream to identify a packet and then forward this related stream based on rules to an output port (original packets).
  • Metadata extraction - XDR - The Cubro Probe can use its DPI feature to look into the packet stream, identify a packet, extract metadata and send this to a server for the next processing step (non-original packets).

PRODUCTS IN THIS SOLUTION

Explore other solutions

USER PLANE MONITORING
USER PLANE IMSI FILTERING
DATA ENRICHMENT FOR GEOLOCATION
DEEP PACKET INSPECTION

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