Why does documentation recommend adding VPN3k/ASA MAC address to the CAM as a "never-certified" "floating device"?
Suppose we have a NAC Appliance in In-band L3 mode behind a VPN 3000. What parameters does it use to identify clients? IP-address? MAC-address? Both? How does it choose if it has both L3 multihop clients and L2-adjacent clients?
If it uses IP addresses it can successfully differentiate between all the clients and the concept of "floating device" doesn't apply, right?
Is the identification of client devices performed uniformly for a) user authentication b) posture assessment c) Nessus scanning? (Note that Certified Devices list seems to only have MAC-addresses of adjacent devices, whilst Online Users list contains both MACs and IPs).
Also, even if it doesn't know MAC address of the remote device, Clean Access Agent (and Web Agent) are able to send it to the NAC Appliance, right?
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...