Definitions Edit

Egress filtering is:

[t]he process of blocking outgoing packets that use obviously false Internet Protocol addresses (IP addresss), such as source addresses from internal networks."[1]
blocking outgoing packets that should not exit a network, such as those from false IP addresses (e.g., packets with internal network source addresses accidentally leaving the organization and entering the Internet).[2]

References Edit

  1. NIST Special Publication 800-61, Glossary, at D-1 (rev. 1).
  2. See Internet Engineering Task Force (IETF), Request for Comment (RFC) 2267, Network Ingress Filtering: Defeating Denial of Service Attacks Which Employ IP Source Address Spoofing (full-text).

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