Today I have been going through some more of the INE Vol2 labs and thought I would do a quick post on reflexive ACL’s. Reflexive ACL’s Reflexive ACL’s can be used as a basic kind of ‘stateful’ table on devices to allow traffic back inbound on already established connections. The reflective part of this feature can only be used on normal traffic flows where the inbound traffic is the same as the traffic that flowed outbound, this means it cannot be used for things like traceroute, VoIP (SIP) calls, FTP…