I was at a seminar presented by Stuart Holoman, Holocon Inc.
yesterday, and he said firewalls are not effective/implementable
below the session layer:
layer 7 - App support
layer 6 - Presentation
layer 5 - Session
layer 4 - Transport
layer 3 - Network
layer 2 - Data link
layer 1 - Physical
I don't know if he was speaking in abstract terms (e.g., not many
people know how to make them effective).
Michael Smith Voice: 919-613-7633
Duke University and Medical Center Fax: 919-613-7631
E-mail: smith135 @