Table of contents
How to show in Linux
cat /etc/services
Output
# Network services, Internet style
#
# Updated from https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml .
#
# New ports will be added on request if they have been officially assigned
# by IANA and used in the real-world or are needed by a debian package.
# If you need a huge list of used numbers please install the nmap package.
tcpmux 1/tcp # TCP port service multiplexer
echo 7/tcp
echo 7/udp
discard 9/tcp sink null
discard 9/udp sink null
systat 11/tcp users
daytime 13/tcp
daytime 13/udp
netstat 15/tcp
qotd 17/tcp quote
chargen 19/tcp ttytst source
chargen 19/udp ttytst source
ftp-data 20/tcp
ftp 21/tcp
fsp 21/udp fspd
ssh 22/tcp # SSH Remote Login Protocol
telnet 23/tcp
smtp 25/tcp mail
time 37/tcp timserver
time 37/udp timserver
whois 43/tcp nicname
tacacs 49/tcp # Login Host Protocol (TACACS)
tacacs 49/udp
domain 53/tcp # Domain Name Server
domain 53/udp
bootps 67/udp
bootpc 68/udp
tftp 69/udp
gopher 70/tcp # Internet Gopher
finger 79/tcp
http 80/tcp www # WorldWideWeb HTTP
kerberos 88/tcp kerberos5 krb5 kerberos-sec # Kerberos v5
kerberos 88/udp kerberos5 krb5 kerberos-sec # Kerberos v5
iso-tsap 102/tcp tsap # part of ISODE
acr-nema 104/tcp dicom # Digital Imag. & Comm. 300
pop3 110/tcp pop-3 # POP version 3
sunrpc 111/tcp portmapper # RPC 4.0 portmapper
sunrpc 111/udp portmapper
auth 113/tcp authentication tap ident
nntp 119/tcp readnews untp # USENET News Transfer Protocol
ntp 123/udp # Network Time Protocol
epmap 135/tcp loc-srv # DCE endpoint resolution
netbios-ns 137/udp # NETBIOS Name Service
netbios-dgm 138/udp # NETBIOS Datagram Service
netbios-ssn 139/tcp # NETBIOS session service
imap2 143/tcp imap # Interim Mail Access P 2 and 4
snmp 161/tcp # Simple Net Mgmt Protocol
snmp 161/udp
snmp-trap 162/tcp snmptrap# Traps for SNMP
snmp-trap 162/udp snmptrap
cmip-man 163/tcp # ISO mgmt over IP (CMOT)
cmip-man 163/udp
cmip-agent 164/tcp
cmip-agent 164/udp
mailq 174/tcp # Mailer transport queue for Zmailer
xdmcp 177/udp # X Display Manager Control Protocol
bgp 179/tcp # Border Gateway Protocol
smux 199/tcp # SNMP Unix Multiplexer
qmtp 209/tcp # Quick Mail Transfer Protocol
z3950 210/tcp wais # NISO Z39.50 database
ipx 213/udp # IPX [RFC1234]
ptp-event 319/udp
ptp-general 320/udp
pawserv 345/tcp # Perf Analysis Workbench
zserv 346/tcp # Zebra server
rpc2portmap 369/tcp
rpc2portmap 369/udp # Coda portmapper
codaauth2 370/tcp
codaauth2 370/udp # Coda authentication server
clearcase 371/udp Clearcase
ldap 389/tcp # Lightweight Directory Access Protocol
ldap 389/udp
svrloc 427/tcp # Server Location
svrloc 427/udp
https 443/tcp # http protocol over TLS/SSL
https 443/udp # HTTP/3
snpp 444/tcp # Simple Network Paging Protocol
microsoft-ds 445/tcp # Microsoft Naked CIFS
kpasswd 464/tcp
kpasswd 464/udp
submissions 465/tcp ssmtp smtps urd # Submission over TLS [RFC8314]
saft 487/tcp # Simple Asynchronous File Transfer
isakmp 500/udp # IPSEC key management
rtsp 554/tcp # Real Time Stream Control Protocol
rtsp 554/udp
nqs 607/tcp # Network Queuing system
asf-rmcp 623/udp # ASF Remote Management and Control Protocol
qmqp 628/tcp
ipp 631/tcp # Internet Printing Protocol
ldp 646/tcp # Label Distribution Protocol
ldp 646/udp
#
# UNIX specific services
#
exec 512/tcp
biff 512/udp comsat
login 513/tcp
who 513/udp whod
shell 514/tcp cmd syslog # 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
gdomap 538/tcp # GNUstep distributed objects
gdomap 538/udp
uucp 540/tcp uucpd # uucp daemon
klogin 543/tcp # Kerberized `rlogin' (v5)
kshell 544/tcp krcmd # Kerberized `rsh' (v5)
dhcpv6-client 546/udp
dhcpv6-server 547/udp
afpovertcp 548/tcp # AFP over TCP
nntps 563/tcp snntp # NNTP over SSL
submission 587/tcp # Submission [RFC4409]
ldaps 636/tcp # LDAP over SSL
ldaps 636/udp
tinc 655/tcp # tinc control port
tinc 655/udp
silc 706/tcp
kerberos-adm 749/tcp # Kerberos `kadmin' (v5)
#
domain-s 853/tcp # DNS over TLS [RFC7858]
domain-s 853/udp # DNS over DTLS [RFC8094]
rsync 873/tcp
ftps-data 989/tcp # FTP over SSL (data)
ftps 990/tcp
telnets 992/tcp # Telnet over SSL
imaps 993/tcp # IMAP over SSL
pop3s 995/tcp # POP-3 over SSL
#
# 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.
#
socks 1080/tcp # socks proxy server
proofd 1093/tcp
rootd 1094/tcp
openvpn 1194/tcp
openvpn 1194/udp
rmiregistry 1099/tcp # Java RMI Registry
lotusnote 1352/tcp lotusnotes # Lotus Note
ms-sql-s 1433/tcp # Microsoft SQL Server
ms-sql-m 1434/udp # Microsoft SQL Monitor
ingreslock 1524/tcp
datametrics 1645/tcp old-radius
datametrics 1645/udp old-radius
sa-msg-port 1646/tcp old-radacct
sa-msg-port 1646/udp old-radacct
kermit 1649/tcp
groupwise 1677/tcp
l2f 1701/udp l2tp
radius 1812/tcp
radius 1812/udp
radius-acct 1813/tcp radacct # Radius Accounting
radius-acct 1813/udp radacct
cisco-sccp 2000/tcp # Cisco SCCP
nfs 2049/tcp # Network File System
nfs 2049/udp # Network File System
gnunet 2086/tcp
gnunet 2086/udp
rtcm-sc104 2101/tcp # RTCM SC-104 IANA 1/29/99
rtcm-sc104 2101/udp
gsigatekeeper 2119/tcp
gris 2135/tcp # Grid Resource Information Server
cvspserver 2401/tcp # 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
mon 2583/tcp # MON traps
mon 2583/udp
dict 2628/tcp # Dictionary server
f5-globalsite 2792/tcp
gsiftp 2811/tcp
gpsd 2947/tcp
gds-db 3050/tcp gds_db # InterBase server
icpv2 3130/udp icp # Internet Cache Protocol
isns 3205/tcp # iSNS Server Port
isns 3205/udp # iSNS Server Port
iscsi-target 3260/tcp
mysql 3306/tcp
ms-wbt-server 3389/tcp
nut 3493/tcp # Network UPS Tools
nut 3493/udp
distcc 3632/tcp # distributed compiler
daap 3689/tcp # Digital Audio Access Protocol
svn 3690/tcp subversion # Subversion protocol
suucp 4031/tcp # UUCP over SSL
sysrqd 4094/tcp # sysrq daemon
sieve 4190/tcp # ManageSieve Protocol
epmd 4369/tcp # Erlang Port Mapper Daemon
remctl 4373/tcp # Remote Authenticated Command Service
f5-iquery 4353/tcp # F5 iQuery
ntske 4460/tcp # Network Time Security Key Establishment
ipsec-nat-t 4500/udp # IPsec NAT-Traversal [RFC3947]
iax 4569/udp # Inter-Asterisk eXchange
mtn 4691/tcp # monotone Netsync Protocol
radmin-port 4899/tcp # RAdmin Port
sip 5060/tcp # Session Initiation Protocol
sip 5060/udp
sip-tls 5061/tcp
sip-tls 5061/udp
xmpp-client 5222/tcp jabber-client # Jabber Client Connection
xmpp-server 5269/tcp jabber-server # Jabber Server Connection
cfengine 5308/tcp
mdns 5353/udp # Multicast DNS
postgresql 5432/tcp postgres# PostgreSQL Database
freeciv 5556/tcp rptp # Freeciv gameplay
amqps 5671/tcp # AMQP protocol over TLS/SSL
amqp 5672/tcp
amqp 5672/sctp
x11 6000/tcp x11-0 # X Window System
x11-1 6001/tcp
x11-2 6002/tcp
x11-3 6003/tcp
x11-4 6004/tcp
x11-5 6005/tcp
x11-6 6006/tcp
x11-7 6007/tcp
gnutella-svc 6346/tcp # gnutella
gnutella-svc 6346/udp
gnutella-rtr 6347/tcp # gnutella
gnutella-rtr 6347/udp
redis 6379/tcp
sge-qmaster 6444/tcp sge_qmaster # Grid Engine Qmaster Service
sge-execd 6445/tcp sge_execd# Grid Engine Execution Service
mysql-proxy 6446/tcp # MySQL Proxy
babel 6696/udp # Babel Routing Protocol
ircs-u 6697/tcp # Internet Relay Chat via TLS/SSL
bbs 7000/tcp
afs3-fileserver 7000/udp
afs3-callback 7001/udp # callbacks to cache managers
afs3-prserver 7002/udp # users & groups database
afs3-vlserver 7003/udp # volume location database
afs3-kaserver 7004/udp # AFS/Kerberos authentication
afs3-volser 7005/udp # volume managment server
afs3-bos 7007/udp # basic overseer process
afs3-update 7008/udp # server-to-server updater
afs3-rmtsys 7009/udp # remote cache manager service
font-service 7100/tcp xfs # X Font Service
http-alt 8080/tcp webcache# WWW caching service
puppet 8140/tcp # The Puppet master service
bacula-dir 9101/tcp # Bacula Director
bacula-fd 9102/tcp # Bacula File Daemon
bacula-sd 9103/tcp # Bacula Storage Daemon
xmms2 9667/tcp # Cross-platform Music Multiplexing System
nbd 10809/tcp # Linux Network Block Device
zabbix-agent 10050/tcp # Zabbix Agent
zabbix-trapper 10051/tcp # Zabbix Trapper
amanda 10080/tcp # amanda backup services
dicom 11112/tcp
hkp 11371/tcp # OpenPGP HTTP Keyserver
db-lsp 17500/tcp # Dropbox LanSync Protocol
dcap 22125/tcp # dCache Access Protocol
gsidcap 22128/tcp # GSI dCache Access Protocol
wnn6 22273/tcp # wnn6
#
# 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
#=========================================================================
# The remaining port numbers are not as allocated by IANA.
#=========================================================================
# Kerberos (Project Athena/MIT) services
kerberos4 750/udp kerberos-iv kdc # Kerberos (server)
kerberos4 750/tcp kerberos-iv kdc
kerberos-master 751/udp kerberos_master # Kerberos authentication
kerberos-master 751/tcp
passwd-server 752/udp passwd_server # Kerberos passwd server
krb-prop 754/tcp krb_prop krb5_prop hprop # Kerberos slave propagation
zephyr-srv 2102/udp # Zephyr server
zephyr-clt 2103/udp # Zephyr serv-hm connection
zephyr-hm 2104/udp # Zephyr hostmanager
iprop 2121/tcp # incremental propagation
supfilesrv 871/tcp # Software Upgrade Protocol server
supfiledbg 1127/tcp # Software Upgrade Protocol debugging
#
# Services added for the Debian GNU/Linux distribution
#
poppassd 106/tcp # Eudora
moira-db 775/tcp moira_db# Moira database
moira-update 777/tcp moira_update # Moira update protocol
moira-ureg 779/udp moira_ureg # Moira user registration
spamd 783/tcp # spamassassin daemon
skkserv 1178/tcp # skk jisho server port
predict 1210/udp # predict -- satellite tracking
rmtcfg 1236/tcp # Gracilis Packeten remote config server
xtel 1313/tcp # french minitel
xtelw 1314/tcp # french minitel
zebrasrv 2600/tcp # zebra service
zebra 2601/tcp # zebra vty
ripd 2602/tcp # ripd vty (zebra)
ripngd 2603/tcp # ripngd vty (zebra)
ospfd 2604/tcp # ospfd vty (zebra)
bgpd 2605/tcp # bgpd vty (zebra)
ospf6d 2606/tcp # ospf6d vty (zebra)
ospfapi 2607/tcp # OSPF-API
isisd 2608/tcp # ISISd vty (zebra)
fax 4557/tcp # FAX transmission service (old)
hylafax 4559/tcp # HylaFAX client-server protocol (new)
munin 4949/tcp lrrd # Munin
rplay 5555/udp # RPlay audio service
nrpe 5666/tcp # Nagios Remote Plugin Executor
nsca 5667/tcp # Nagios Agent - NSCA
canna 5680/tcp # cannaserver
syslog-tls 6514/tcp # Syslog over TLS [RFC5425]
sane-port 6566/tcp sane saned # SANE network scanner daemon
ircd 6667/tcp # Internet Relay Chat
zope-ftp 8021/tcp # zope management by ftp
tproxy 8081/tcp # Transparent Proxy
omniorb 8088/tcp # OmniORB
clc-build-daemon 8990/tcp # Common lisp build daemon
xinetd 9098/tcp
git 9418/tcp # Git Version Control System
zope 9673/tcp # zope server
webmin 10000/tcp
kamanda 10081/tcp # amanda backup services (Kerberos)
amandaidx 10082/tcp # amanda backup services
amidxtape 10083/tcp # amanda backup services
sgi-cmsd 17001/udp # Cluster membership services daemon
sgi-crsd 17002/udp
sgi-gcd 17003/udp # SGI Group membership daemon
sgi-cad 17004/tcp # Cluster Admin daemon
binkp 24554/tcp # binkp fidonet protocol
asp 27374/tcp # Address Search Protocol
asp 27374/udp
csync2 30865/tcp # cluster synchronization tool
dircproxy 57000/tcp # Detachable IRC Proxy
tfido 60177/tcp # fidonet EMSI over telnet
fido 60179/tcp # fidonet EMSI over TCP
Just Note