With UAC firewall gives access based on combination of resource and ROLE ( not just resource). IC pushes ROLE information to the firewall along with resource subnet. So if user is in remediation vlan and for that role if access is deined , user wont be able to access resource. So firewall doesn't need to know the VLAN id or subnet of remediation VLAN. Decision is done on basis of ROLE. Thats why it is so independent of network subent or source IP .
... View more