last time, many russian customers (and also customers from other countries) ask us about solutions to intercept internet traffic (web, mail, im, voip). Some of them also want to use this system together with usual phones interception systems.
As i know, in Russia exists some systems, that implement this in some way. But no one do interception of all types of traffic. And we, also trying to play in this game - we has several approaches to this, all based on out MailBoss product, combined with different sniffers and dissectors for various protocols, that produce mail like messages and send them into MailBoss, that do text & datatype detection, and process it with different filtering rules.
But interception of full traffic, has different disadvantages - we need to store anormal amount in information, and we can't use usual relational database to do this. So, currently i thinking about implementing something like data storage, used by web search systems.
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