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[first slide] (2) Determine service flows between domains and draw them (1/3) [previous slide] [next slide]


* Service flows will be determine jointly by
o (1) Analyze business needs with management
o (2) Look at the existing security policy (if available)
o (3) Look at the existing ACLs (if any)
o (4) Requests directed towards the users
   - good for users awareness
   - poor results
o (5) Sniffing the network for several weeks at the point where the SPEP will be
   - needs NOC cooperation
   - good results

* Synthesis the results of all techniques to draw the service flows used on the network

* Application of "What is not expressly allowed is denied"


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