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Computer Security Resource Center

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Router

Abbreviation(s) and Synonym(s):

RTR

Definition(s):

  A computer that is a gateway between two networks at OSI layer 3 and that relays and directs data packets through that inter-network. The most common form of router operates on IP packets.
Source(s):
NIST SP 800-82 Rev. 2 from RFC 4949
NISTIR 8183 from NIST SP 800-82, NIST SP 800-82 Rev. 2
NISTIR 8183A Vol. 1 from NIST SP 800-82
NISTIR 8183A Vol. 2 from NIST SP 800-82
NISTIR 8183A Vol. 3 from NIST SP 800-82
NISTIR 8183 Rev. 1 from NIST SP 800-82 Rev. 2

  On a network, a device that determines the best path for forwarding a data packet toward its destination. The router is connected to at least two networks, and is located at the gateway where one network meets another.
Source(s):
NIST SP 800-47

  A computer that is a gateway between two networks at open system interconnection layer 3 and that relays and directs data packets through that internetwork. The most common form of router operates on IP packets.
Source(s):
NIST SP 1800-15B from NIST SP 800-82 Rev. 2

  A computer that is a gateway between two networks at open systems interconnection layer 3 and that relays and directs data packets through that internetwork. The most common form of router operates on IP packets.
Source(s):
NIST SP 1800-15C from NIST SP 800-82 Rev. 2