WHO
type: Concept
type: Thing
type: NamedIndividual
type: Service
label: maintains data bases showing who's logged in to machines on a local net and the load average of the machine
notation: who
term status: stable
description: maintains data bases showing who's logged in to machines on a local net and the load average of the machine
ports: 513 (UDP)
in dataset: service

513 (UDP)
type: Port
notation: 513

UDP
type: Concept
type: Thing
type: NamedIndividual
type: Protocol
label: User Datagram
notation: udp
term status: stable
description: User Datagram
IANA ref: RFC768
in dataset: protocol
has part: 513 (UDP)

RFC768
type: Document

Jon Postel
type: Agent

who
type: Document
primary topic: WHO