The only time ISE would perform traffic redirection is when you doing things like CWA (Central Web Authentication), Posture Assessment, etc. If you are just doing basic dot1x/mab authentication then ISE just decides who gets on the network and what type of access that person/devices gets.
With that being said, what happens if you remove dot1x authentication from the port? Can the client reach ISE then? (you can quickly remove dot1x by issuing no authentication port-control auto)
Other things to try:
1. Remove the dACL
2. In the authorization rule, return the default "permit access"
3. Remove the ACL on the FW
4. Anything else that might be affecting the connection
With the process of elimination you should be able to find the root cause of the issue
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...