Port Lookup

Port
Protocol
Description
Service
Assignee
513
TCP
remote login a la telnet; automatic authentication performed...
login
513
UDP
maintains data bases showing who's logged in to machines on...
who
514
TCP
cmd like exec, but automatic authentication is performed as...
shell
514
UDP
syslog
515
TCP
spooler
printer
515
UDP
spooler
printer
516
TCP
videotex
videotex
[Daniel_Mavrakis]
516
UDP
videotex
videotex
[Daniel_Mavrakis]
517
TCP
like tenex link, but across machine - unfortunately, doesn't...
talk
517
UDP
like tenex link, but across machine - unfortunately, doesn't...
talk
518
TCP
ntalk
518
UDP
ntalk
519
TCP
unixtime
utime
519
UDP
unixtime
utime
520
TCP
extended file name server
efs
520
UDP
local routing process (on site); uses variant of Xerox NS ro...
router
521
TCP
ripng
ripng
[Robert_E_Minnear]
521
UDP
ripng
ripng
[Robert_E_Minnear]
522
TCP
ULP
ulp
[Max_Morris]
522
UDP
ULP
ulp
[Max_Morris]