512
type: Concept
type: Thing
type: NamedIndividual
type: Port
notation: 512
narrower: 512 (UDP)
narrower: 512 (TCP)
in dataset: port

512 (UDP)
type: Port
notation: 512
label: used by mail system to notify users of new mail received; currently receives messages only from processes on the same machine
term status: stable
description: used by mail system to notify users of new mail received; currently receives messages only from processes on the same machine

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: 512 (UDP)

RFC768
type: Document

Jon Postel
type: Agent

BIFF
type: Concept
type: Thing
type: NamedIndividual
type: Service
notation: biff
ports: 512 (UDP)

COMSAT
type: Concept
type: Thing
type: NamedIndividual
type: Service
notation: comsat
ports: 512 (UDP)

512 (TCP)
type: Port
notation: 512
label: used by mail system to notify users of new mail received; currently receives messages only from processes on the same machine
term status: stable
description: used by mail system to notify users of new mail received; currently receives messages only from processes on the same machine

TCP
type: Concept
type: Thing
type: NamedIndividual
type: Protocol
label: Transmission Control
notation: tcp
term status: stable
description: Transmission Control
IANA ref: RFC9293
in dataset: protocol
has part: 512 (TCP)

RFC9293
type: Document

EXEC
type: Concept
type: Thing
type: NamedIndividual
type: Service
notation: exec
ports: 512 (TCP)

512
type: Document
primary topic: 512