Previous Page | Next Page

  1. Introduction
  2. Network Topology
  3. Hardware Connections
  4. TCP/IP Ports and Addresses
  5. Network Protocol Levels
  6. Data Link Layer and IEEE
  7. Network Protocol Categories
  8. Repeaters, Bridges, Routers
  9. ARP and RARP Address Translation
  10. Basic Addressing
  11. IP (Network)
  12. TCP (Transport)
  13. UDP (Transport)
  14. ICMP
  15. Hardware Cabling
  16. Wireless media
  17. Outside Connections
  18. Ethernet
  19. Token Ring
  20. ARCnet
  21. AppleTalk
  22. FDDI
  23. IPX/SPX
  24. NetBEUI
  25. AppleTalk
  26. SNA
  27. Others
  28. Simple Routing
  29. More Complex Routing
  30. IP Masquerading
  31. Firewalls
  32. Domain Name Service (DNS)
  33. Virtual Private Networking
  34. DHCP
  35. BOOTP
  36. RPC and NFS
  37. Broadcasting and Multicasting
  38. IGMP
  39. Dynamic Routing Protocols
  40. Simple Mail Transfer Protocol (SMTP)
  41. Simple Network Management Protocol
  42. Network Services
  43. Installing Drivers
  44. Network Operating Systems
  45. Applications
  46. Wide Area Networks
  47. Backing up the network
  48. Fault Tolerance
  49. Troubleshooting
  50. Commonly used Network Ports
  51. Networking Terms and Definitions
  52. Networking RFCs and Protocols
  53. Further Reading
  54. Credits

Network Ports

Not all ports are included here, just the most common ones:
KeywordNumberProtocol(s)Description
tcpmux1TCP, UDPTCP Port Service Multiplexer
echo7TCP, UDPEcho
discard9TCP, UDPDiscard
systat11TCPActive Users
daytime13TCP, UDPDaytime (RFC 867)
qotd17TCPQuote of the Day
msp18TCP, UDPmessage send protocol
chargen19TCP, UDPCharacter Generator
ftp-data20TCP, UDPFile transfer default data
ftp21TCP, UDPFile transfer control
ssh22TCP, UDPRemote login protocol
telnet23TCP, UDPTelnet
smtp25TCP, UDPSimple Mail Transfer
time37TCP, UDPTime
rlp39TCP, UDPResource location protocol
nameserver42TCP, UDPHost name server
whois43TCP, UDPWho is
re-mail-ck50TCP, UDPRemote mail checking protocol
domain53TCP, UDPDomain name server
bootps67TCP, UDPBootstrap protocol server
bootpc68TCP, UDPBootstrap protocol client
tftp69TCP, UDPTrivial file transfer protocol
gopher70TCP, UDPGopher
finger79TCP, UDPFinger
www80TCP, UDPWorld wide web or HTTP
kerberos88TCP, UDPKerberos
supdup95TCP, UDPSUPDUP
hostname101TCP, UDPNIC Host Name Server
iso-tsap102TCP, UDPISO-TSAP Class 0
csnet-ns105TCP, UDPCCSO name server protocol
rtelnet107TCP, UDPRemote Telnet Service
pop-2109TCP, UDPPost Office Protocol - Version 2
pop-3110TCP, UDPPost Office Protocol - Version 3
sunrps111TCP, UDPSUN Remote Procedure Call
auth113TCP, UDPAuthentication Service
sftp115TCP, UDPSimple File Transfer Protocol
uucp-path117TCP, UDPUUCP Path Service
nntp119TCP, UDPNetwork News Transfer Protocol
nyp123TCP, UDPNetwork Time Protocol
netbios-ne137TCP, UDPNETBIOS Name Service
netbios-dgram138TCP, UDPNETBIOS Datagram Service
netbios-ssn139TCP, UDPNETBIOS Session Service
imap143TCP, UDPInternet Message Access Protocol
snmp161TCP, UDPSNMP
snmp-trap162TCP, UDPSNMPTRAP
cmip-man163TCP, UDPCMIP/TCP Manager
cmip-agent164TCP, UDPCMIP/TCP Agent
xdmcp177TCP, UDPX Display Manager Control Protocol
nextstep178TCP, UDPNextStep Window Server
bgp179TCP, UDPBorder Gateway Protocol
prospero191TCP, UDPProspero Directory Service
irc194TCP, UDPInternet Relay Chat Protocol
smux199TCP, UDPSMUX

at-rtmp		201/tcp				# AppleTalk routing
at-rtmp		201/udp
at-nbp		202/tcp				# AppleTalk name binding
at-nbp		202/udp
at-echo		204/tcp				# AppleTalk echo
at-echo		204/udp
at-zis		206/tcp				# AppleTalk zone information
at-zis		206/udp
qmtp		209/tcp				# The Quick Mail Transfer Protocol
qmtp		209/udp				# The Quick Mail Transfer Protocol
z3950		210/tcp		wais		# NISO Z39.50 database
z3950		210/udp		wais
ipx		213/tcp				# IPX
ipx		213/udp
imap3		220/tcp				# Interactive Mail Access
imap3		220/udp				# Protocol v3
rpc2portmap	369/tcp
rpc2portmap	369/udp				# Coda portmapper
codaauth2	370/tcp
codaauth2	370/udp				# Coda authentication server
ulistserv	372/tcp				# UNIX Listserv
ulistserv	372/udp
https		443/tcp				# MCom
https		443/udp				# MCom
snpp		444/tcp				# Simple Network Paging Protocol
snpp		444/udp				# Simple Network Paging Protocol
saft		487/tcp				# Simple Asynchronous File Transfer
saft		487/udp				# Simple Asynchronous File Transfer
npmp-local	610/tcp		dqs313_qmaster	# npmp-local / DQS
npmp-local	610/udp		dqs313_qmaster	# npmp-local / DQS
npmp-gui	611/tcp		dqs313_execd	# npmp-gui / DQS
npmp-gui	611/udp		dqs313_execd	# npmp-gui / DQS
hmmp-ind	612/tcp		dqs313_intercell# HMMP Indication / DQS
hmmp-ind	612/udp		dqs313_intercell# HMMP Indication / DQS
#
# UNIX specific services
#
exec		512/tcp
biff		512/udp		comsat
login		513/tcp
who		513/udp		whod
shell		514/tcp		cmd		# no passwords used
syslog		514/udp
printer		515/tcp		spooler		# line printer spooler
talk		517/udp
ntalk		518/udp
route		520/udp		router routed	# RIP
timed		525/udp		timeserver
tempo		526/tcp		newdate
courier		530/tcp		rpc
conference	531/tcp		chat
netnews		532/tcp		readnews
netwall		533/udp				# -for emergency broadcasts
uucp		540/tcp		uucpd		# uucp daemon
afpovertcp	548/tcp				# AFP over TCP
afpovertcp	548/udp				# AFP over TCP
remotefs	556/tcp		rfs_server rfs	# Brunhoff remote filesystem
klogin		543/tcp				# Kerberized `rlogin' (v5)
kshell		544/tcp		krcmd		# Kerberized `rsh' (v5)
kerberos-adm	749/tcp				# Kerberos `kadmin' (v5)
#
webster		765/tcp				# Network dictionary
webster		765/udp
#
# From ``Assigned Numbers'':
#
#> The Registered Ports are not controlled by the IANA and on most systems
#> can be used by ordinary user processes or programs executed by ordinary
#> users.
#
#> Ports are used in the TCP [45,106] to name the ends of logical
#> connections which carry long term conversations.  For the purpose of
#> providing services to unknown callers, a service contact port is
#> defined.  This list specifies the port used by the server process as its
#> contact port.  While the IANA can not control uses of these ports it
#> does register or list uses of these ports as a convienence to the
#> community.
#
ingreslock	1524/tcp
ingreslock	1524/udp
prospero-np	1525/tcp			# Prospero non-privileged
prospero-np	1525/udp
datametrics	1645/tcp	old-radius	# datametrics / old radius entry
datametrics	1645/udp	old-radius	# datametrics / old radius entry
sa-msg-port	1646/tcp	old-radacct	# sa-msg-port / old radacct entry
sa-msg-port	1646/udp	old-radacct	# sa-msg-port / old radacct entry
radius		1812/tcp			# Radius
radius		1812/udp			# Radius
radacct		1813/tcp			# Radius Accounting
radacct		1813/udp			# Radius Accounting
cvspserver	2401/tcp			# CVS client/server operations
cvspserver	2401/udp			# CVS client/server operations
venus		2430/tcp			# codacon port
venus		2430/udp			# Venus callback/wbc interface
venus-se	2431/tcp			# tcp side effects
venus-se	2431/udp			# udp sftp side effect
codasrv		2432/tcp			# not used
codasrv		2432/udp			# server port
codasrv-se	2433/tcp			# tcp side effects
codasrv-se	2433/udp			# udp sftp side effect
mysql		3306/tcp			# MySQL
mysql		3306/udp			# MySQL
rfe		5002/tcp			# Radio Free Ethernet
rfe		5002/udp			# Actually uses UDP only
cfengine	5308/tcp			# CFengine
cfengine	5308/udp			# CFengine
bbs		7000/tcp			# BBS service
#
#
# Kerberos (Project Athena/MIT) services
# Note that these are for Kerberos v4, and are unofficial.  Sites running
# v4 should uncomment these and comment out the v5 entries above.
#
kerberos4	750/udp		kerberos-iv kdc	# Kerberos (server) udp
kerberos4	750/tcp		kerberos-iv kdc	# Kerberos (server) tcp
kerberos_master	751/udp				# Kerberos authentication
kerberos_master	751/tcp				# Kerberos authentication
passwd_server	752/udp				# Kerberos passwd server
krb_prop	754/tcp				# Kerberos slave propagation
krbupdate	760/tcp		kreg		# Kerberos registration
kpasswd		761/tcp		kpwd		# Kerberos "passwd"
kpop		1109/tcp			# Pop with Kerberos
knetd		2053/tcp			# Kerberos de-multiplexor
zephyr-srv	2102/udp			# Zephyr server
zephyr-clt	2103/udp			# Zephyr serv-hm connection
zephyr-hm	2104/udp			# Zephyr hostmanager
eklogin		2105/tcp			# Kerberos encrypted rlogin
#
# Unofficial but necessary (for NetBSD) services
#
supfilesrv	871/tcp				# SUP server
supfiledbg	1127/tcp			# SUP debugging
#
# Datagram Delivery Protocol services
#
rtmp		1/ddp				# Routing Table Maintenance Protocol
nbp		2/ddp				# Name Binding Protocol
echo		4/ddp				# AppleTalk Echo Protocol
zip		6/ddp				# Zone Information Protocol
#
# Services added for the Debian GNU/Linux distribution
poppassd	106/tcp				# Eudora
poppassd	106/udp				# Eudora
mailq		174/tcp				# Mailer transport queue for Zmailer
mailq		174/tcp				# Mailer transport queue for Zmailer
ssmtp		465/tcp				# SMTP over SSL
gdomap		538/tcp				# GNUstep distributed objects
gdomap		538/udp				# GNUstep distributed objects
snews		563/tcp				# NNTP over SSL
ssl-ldap	636/tcp				# LDAP over SSL
omirr		808/tcp		omirrd		# online mirror
omirr		808/udp		omirrd		# online mirror
rsync		873/tcp				# rsync
rsync		873/udp				# rsync
simap	 	993/tcp				# IMAP over SSL
spop3		995/tcp				# POP-3 over SSL
socks		1080/tcp			# socks proxy server
socks		1080/udp			# socks proxy server
rmtcfg		1236/tcp			# Gracilis Packeten remote config server
xtel		1313/tcp			# french minitel
support		1529/tcp			# GNATS
cfinger		2003/tcp			# GNU Finger
ninstall	2150/tcp			# ninstall service
ninstall	2150/udp			# ninstall service
afbackup	2988/tcp			# Afbackup system
afbackup	2988/udp			# Afbackup system
icp		3130/tcp			# Internet Cache Protocol (Squid)
icp		3130/udp			# Internet Cache Protocol (Squid)
postgres	5432/tcp			# POSTGRES
postgres	5432/udp			# POSTGRES
fax		4557/tcp			# FAX transmission service        (old)
hylafax		4559/tcp			# HylaFAX client-server protocol  (new)
noclog		5354/tcp			# noclogd with TCP (nocol)
noclog		5354/udp			# noclogd with UDP (nocol)
hostmon		5355/tcp			# hostmon uses TCP (nocol)
hostmon		5355/udp			# hostmon uses TCP (nocol)
ircd		6667/tcp			# Internet Relay Chat
ircd		6667/udp			# Internet Relay Chat
webcache	8080/tcp			# WWW caching service
webcache	8080/udp			# WWW caching service
tproxy		8081/tcp			# Transparent Proxy
tproxy		8081/udp			# Transparent Proxy
mandelspawn	9359/udp	mandelbrot	# network mandelbrot
amanda		10080/udp			# amanda backup services
kamanda		10081/tcp			# amanda backup services (Kerberos)
kamanda		10081/udp			# amanda backup services (Kerberos)
amandaidx	10082/tcp			# amanda backup services
amidxtape	10083/tcp			# amanda backup services
isdnlog		20011/tcp			# isdn logging system
isdnlog		20011/udp			# isdn logging system
vboxd		20012/tcp			# voice box system
vboxd		20012/udp			# voice box system
binkp		24554/tcp			# Binkley
binkp		24554/udp			# Binkley
asp		27374/tcp			# Address Search Protocol
asp		27374/udp			# Address Search Protocol
tfido		60177/tcp			# Ifmail
tfido		60177/udp			# Ifmail
fido		60179/tcp			# Ifmail
fido		60179/udp			# Ifmail

# Local services

linuxconf 98/tcp
swat              901/tcp                         # Add swat service used via inetd