Information, Computer and Network Security Terms Glossary and Dictionary

Reflexive access lists or Reflexive ACLs, sitting in a filtering router contain condition statements (entries) that define criteria for permitting IP packets. Reflexive access lists enable dynamically open up filtering router to allow reply packets back through, in response to an outbound TCP connection or UDP session initiated from within your network. This mechanism reduces exposure to spoofing and denial-of-service, since desirable inbound flows are mostly in response to outbound traffic.

Related Terms

Reflexive Access List (ACLs)