PortMap

Port 512

Well-known
← All ports
Service
comsat
Protocol
TCP
Description
biff is a mail notification system for Unix.
Citations
Service
biff
Protocols
TCP UDP
Description
biff (UDP): used by mail system to notify users of new mail received
Citations
Service
exec-rexec
Protocol
TCP
Description
The Berkeley r-commands are a suite of computer programs designed to enable users of one Unix system to log in or issue commands to another Unix computer via TCP/IP computer network. The r-commands were developed in 1982 by the Computer Systems Research Group (CSRG) at the University of California, Berkeley, based on an early implementation of TCP/IP.
Citations