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In short, the proliferation and provision of content-based and value-added services by service providers has a future that seems boundless. What appears certain is that with so many possible combinations, these services will be made up of highly personalized packages.
What then, is DPI’s role in the provisioning of these new services?
DPI Enables Value-Added Services
We have seen how DPI can optimize service delivery and extend the capabilities of existing network infrastructures to allow them to handle more traffic more efficiently without incurring costly infrastructure additions before they are needed. DPI can further help providers offer content-based and value-added services as part of a platform that combines best of breed services with the power of a DPI engine. Here are two examples of how these services can benefit from DPI.
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In short, the proliferation and provision of content-based and value-added services by service providers has a future that seems boundless. |
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Denial of Service Protection
Dedicated denial of service (DoS) applications provide advanced levels of DoS protection. These applications are able to detect subtle DoS attack types, protect against network penetration, and provide sophisticated protection based upon anomalies and signatures. If offered by service providers, this type of protection would allow the providers to detect and correct attacks being directed to subscribers as well as those unknowingly being propagated by subscribers. DPI working in conjunction with a DoS system provides:
- Identification of subscribers who purchase the service
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Parental Control
Parental control on the Internet is achieved by filtering suspect URLs coming over the network. Without DPI, all URLs have to go through the URL filtering system, which puts a load on the URL filtering system and slows down the service. DPI working in conjunction with an URL filtering system provides:
- Classification of the traffic and redirection of only the suspect traffic to URL filtering system
- Reduction of the possibility of misclassification and delays
- Refinement for the URL filtering system, which now has to handle only the "pure" traffic and is no longer bogged down processing all http or port 80 traffic
- Improvement of the QoE of the filtered subscribers
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- Immediate detection and direction of any DoS activity to the DoS service protection system for signed-up subscribers
- Optimal performance for the DoS service protection system
Combined with QoS control, DPI also allows the service provider to prioritize traffic so that latency-sensitive applications, such as WebTV and VoIP, do not deteriorate due to jitter or dropped or delayed packets. DPI can be highly instrumental in the detection of intrusions and malware and, as noted, can help prevent DoS attacks. Controlling traffic by knowing what is moving on your network is essential to URL filtering and parental control services, and as detailed above, DPI’s insight at the granular level allows providers to ensure that only what is wanted (and paid for) by the subscriber gets through.
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