UNIX-Specific Ports

PORT
LAYER
NAME
DESCRIPTION
512
TCP
exec
Authentication for remote process execution
512
UDP
biff [comsat]
Asynchrous mail client (biff) and service (comsat)
513
TCP
login
Remote Login (rlogin)
513
UDP
who [whod]
whod user logging daemon
514
TCP
shell [cmd]
Remote shell (rshell) and remote copy (rcp) with no logging
514
UDP
syslog
UNIX system logging service
515
printer [spooler]
Line printer (lpr) spooler
517
UDP
talk
Talk remote calling service and client
518
UDP
ntalk
Network talk (ntalk) remote calling service and client
519
utime [unixtime]
UNIX time (utime) protocol
520
TCP
efs
Extended Filename Server (EFS)
520
UDP
router [route, routed]
Routing Information Protocol (RIP)
521
ripng
Routing Information Protocol for Internet Protocol version 6 (IPv6)
525
timed [timeserver]
Time daemon (timed)
526/
TCP
tempo [newdate]
Tempo
530
TCP
courier [rpc]
Courier Remote Procedure Call (RPC) protocol
531
TCP
conference [chat]
Internet Relay Chat
532
netnews
Netnews newsgroup service
533
UDP
netwall
Netwall for emergency broadcasts
540
TCP
uucp [uucpd]
UNIX-to-UNIX copy services
543
TCP
klogin
Kerberos version 5 (v5) remote login
544
TCP
kshell
Kerberos version 5 (v5) remote shell
548
afpovertcp
Appletalk Filing Protocol (AFP) over Transmission Control Protocol (TCP)
556
remotefs [rfs_server, rfs]
Brunhoff’s Remote Filesystem (RFS)
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