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Filtering Router

nounid 2590·updated May 9, 2026
candidate

An inter-network router that selectively prevents the passage of data packets according to a security policy. A filtering router may be used as a firewall or part of a firewall. A router usually receives a packet from a network and decides where to forward it on a second network. A filtering router does the same, but first decides whether the packet should be forwarded at all, according to some security policy. The policy is implemented by rules (packet filters) loaded into the router.

MWE

Classifications

Entity Type

Network95%rule-basedr:entity.network.gear.v1

Sensitivity

unclassified

Information Class

unclassified

Variants

plural
Filtering Routers
possessive
Filtering Router's
pluralpossessive
Filtering Routers'

Framework definitions

SANS Glossary of Security Terms1 senseview framework →
§1
An inter-network router that selectively prevents the passage of data packets according to a security policy. A filtering router may be used as a firewall or part of a firewall. A router usually receives a packet from a network and decides where to forward it on a second network. A filtering router does the same, but first decides whether the packet should be forwarded at all, according to some security policy. The policy is implemented by rules (packet filters) loaded into the router.

Outgoing relationships

No outgoing triples
This term is not the subject of any RDF-style relationship yet.

Incoming relationships

No incoming triples
No other term currently asserts a relationship to this one.