Correct me if I'm wrong. As I understand transparent proxy != DPI because transparent proxy have some functional limitations and dpi haven't. So the WSA's web filters and rules are based on transparent proxy that will affect some type of traffic or not?
Deep Packet Inspection will be more likely what a FW does; it does protocol enforcement; check if the traffic is compliante with the RFC and so on..
The WSA can act as Explicit proxy (change the proxy settings on the browser) or transparent proxy that will be redirect the traffic through WCCP so there are no settings on the client itself so the user won't noticed that the HTTP/HTTPS/FTP is been monitored until it tries to access a malicious site.
We can't compare DPI with transparent proxy; this are two different concepts
"If you need PDI (Planning, Design, Implement) assistance feel free to reach us"
Table of ContentsIntroductionVersion HistoryPossible Future
UpdatesDocuments PurposeNAT Operation in ASA 8.3+ SectionsRule Types
Network Object NATTwice NAT / Manual NATRule Types used per SectionNAT
Types used with Twice NAT / Manual NAT and Network Obje...
Table of Contents Introduction:This document describes details on how
NAT-T works. Background: ESP encrypts all critical information,
encapsulating the entire inner TCP/UDP datagram within an ESP header.
ESP is an IP protocol in the same sense that TCP an...