NetTrain.com

HOME

Well Known Port Numbers - 0 to 100


                  0/tcp    Reserved
                  0/udp    Reserved
tcpmux            1/tcp    TCP Port Service Multi
tcpmux            1/udp    TCP Port Service Multi
compressnet       2/tcp    Management Utility
compressnet       2/udp    Management Utility
compressnet       3/tcp    Compression Process
compressnet       3/udp    Compression Process
#                 4/tcp    Unassigned
#                 4/udp    Unassigned
rje               5/tcp    Remote Job Entry
rje               5/udp    Remote Job Entry
#                 6/tcp    Unassigned
#                 6/udp    Unassigned
echo              7/tcp    Echo
echo              7/udp    Echo
#                 8/tcp    Unassigned
#                 8/udp    Unassigned
discard           9/tcp    Discard
discard           9/udp    Discard
#                10/tcp    Unassigned
#                10/udp    Unassigned
systat           11/tcp    Active Users
systat           11/udp    Active Users
#                12/tcp    Unassigned
#                12/udp    Unassigned
daytime          13/tcp    Daytime (RFC 867)
daytime          13/udp    Daytime (RFC 867)
#                14/tcp    Unassigned
#                14/udp    Unassigned
#                15/tcp    Unassigned [was netstat]
#                15/udp    Unassigned
#                16/tcp    Unassigned
#                16/udp    Unassigned
qotd             17/tcp    Quote of the Day
qotd             17/udp    Quote of the Day
msp              18/tcp    Message Send Protocol
msp              18/udp    Message Send Protocol
chargen          19/tcp    Character Generator
chargen          19/udp    Character Generator
ftp-data         20/tcp    File Transfer [Default]
ftp-data         20/udp    File Transfer [Default]
ftp              21/tcp    File Transfer [Control]
ftp              21/udp    File Transfer [Control]
ssh              22/tcp    SSH Remote Login Protocol
ssh              22/udp    SSH Remote Login Protocol
telnet           23/tcp    Telnet
telnet           23/udp    Telnet
                 24/tcp    any private mail system
                 24/udp    any private mail system
smtp             25/tcp    Simple Mail Transfer
smtp             25/udp    Simple Mail Transfer
#                26/tcp    Unassigned
#                26/udp    Unassigned
nsw-fe           27/tcp    NSW User System FE
nsw-fe           27/udp    NSW User System FE
#                28/tcp    Unassigned
#                28/udp    Unassigned
msg-icp          29/tcp    MSG ICP
msg-icp          29/udp    MSG ICP
#                30/tcp    Unassigned
#                30/udp    Unassigned
msg-auth         31/tcp    MSG Authentication
msg-auth         31/udp    MSG Authentication
#                32/tcp    Unassigned
#                32/udp    Unassigned
dsp              33/tcp    Display Support Protocol
dsp              33/udp    Display Support Protocol
#                34/tcp    Unassigned
#                34/udp    Unassigned
                 35/tcp    any private printer server
                 35/udp    any private printer server
#                36/tcp    Unassigned
#                36/udp    Unassigned
time             37/tcp    Time
time             37/udp    Time
rap              38/tcp    Route Access Protocol
rap              38/udp    Route Access Protocol
rlp              39/tcp    Resource Location Protocol
rlp              39/udp    Resource Location Protocol
#                40/tcp    Unassigned
#                40/udp    Unassigned
graphics         41/tcp    Graphics
graphics         41/udp    Graphics
name             42/tcp    Host Name Server
name             42/udp    Host Name Server
nameserver       42/tcp    Host Name Server
nameserver       42/udp    Host Name Server
nicname          43/tcp    Who Is
nicname          43/udp    Who Is
mpm-flags        44/tcp    MPM FLAGS Protocol
mpm-flags        44/udp    MPM FLAGS Protocol
mpm              45/tcp    MPM [recv]
mpm              45/udp    MPM [recv]
mpm-snd          46/tcp    MPM [default send]
mpm-snd          46/udp    MPM [default send]
ni-ftp           47/tcp    NI FTP
ni-ftp           47/udp    NI FTP
auditd           48/tcp    Digital Audit Daemon
auditd           48/udp    Digital Audit Daemon
tacacs           49/tcp    LHP (TACACS)
tacacs           49/udp    LLHP (TACACS)
re-mail-ck       50/tcp    Remote Mail Checking Pro.
re-mail-ck       50/udp    Remote Mail Checking Pro.
la-maint         51/tcp    IMP Logical Address Maint.
la-maint         51/udp    IMP Logical Address Maint.
xns-time         52/tcp    XNS Time Protocol
xns-time         52/udp    XNS Time Protocol
domain           53/tcp    Domain Name Server
domain           53/udp    Domain Name Server
xns-ch           54/tcp    XNS Clearinghouse
xns-ch           54/udp    XNS Clearinghouse
isi-gl           55/tcp    ISI Graphics Language
isi-gl           55/udp    ISI Graphics Language
xns-auth         56/tcp    XNS Authentication
xns-auth         56/udp    XNS Authentication
                 57/tcp    any prv terminal access
                 57/udp    any prv terminal access
xns-mail         58/tcp    XNS Mail
xns-mail         58/udp    XNS Mail
                 59/tcp    any private file service
                 59/udp    any private file service
                 60/tcp    Unassigned
                 60/udp    Unassigned
ni-mail          61/tcp    NI MAIL
ni-mail          61/udp    NI MAIL
acas             62/tcp    ACA Services
acas             62/udp    ACA Services
whois++          63/tcp    whois++
whois++          63/udp    whois++
covia            64/tcp    Comm. Integrator (CI)
covia            64/udp    Comm. Integrator (CI)
tacacs-ds        65/tcp    TACACS-Database Service
tacacs-ds        65/udp    TACACS-Database Service
sql*net          66/tcp    Oracle SQL*NET
sql*net          66/udp    Oracle SQL*NET
bootps           67/tcp    Bootstrap Protocol Server
bootps           67/udp    Bootstrap Protocol Server
bootpc           68/tcp    Bootstrap Protocol Client
bootpc           68/udp    Bootstrap Protocol Client
tftp             69/tcp    Trivial File Transfer
tftp             69/udp    Trivial File Transfer
gopher           70/tcp    Gopher
gopher           70/udp    Gopher
netrjs-1         71/tcp    Remote Job Service
netrjs-1         71/udp    Remote Job Service
netrjs-2         72/tcp    Remote Job Service
netrjs-2         72/udp    Remote Job Service
netrjs-3         73/tcp    Remote Job Service
netrjs-3         73/udp    Remote Job Service
netrjs-4         74/tcp    Remote Job Service
netrjs-4         74/udp    Remote Job Service
                 75/tcp    any priv. dial out service
                 75/udp    any priv. dial out service
deos             76/tcp    Dist. External Object Store
deos             76/udp    Dist. External Object Store
                 77/tcp    any private RJE service
                 77/udp    any private RJE service
vettcp           78/tcp    vettcp
vettcp           78/udp    vettcp
finger           79/tcp    Finger
finger           79/udp    Finger
http             80/tcp    World Wide Web HTTP
http             80/udp    World Wide Web HTTP
www              80/tcp    World Wide Web HTTP
www              80/udp    World Wide Web HTTP
www-http         80/tcp    World Wide Web HTTP
www-http         80/udp    World Wide Web HTTP
hosts2-ns        81/tcp    HOSTS2 Name Server
hosts2-ns        81/udp    HOSTS2 Name Server
xfer             82/tcp    XFER Utility
xfer             82/udp    XFER Utility
mit-ml-dev       83/tcp    MIT ML Device
mit-ml-dev       83/udp    MIT ML Device
ctf              84/tcp    Common Trace Facility
ctf              84/udp    Common Trace Facility
mit-ml-dev       85/tcp    MIT ML Device
mit-ml-dev       85/udp    MIT ML Device
mfcobol          86/tcp    Micro Focus Cobol
mfcobol          86/udp    Micro Focus Cobol
                 87/tcp    any private terminal link
                 87/udp    any private terminal link
kerberos         88/tcp    Kerberos
kerberos         88/udp    Kerberos
su-mit-tg        89/tcp    SU/MIT Telnet Gateway
su-mit-tg        89/udp    SU/MIT Telnet Gateway
dnsix            90/tcp    DNSIX Sec. Attri. Token Map
dnsix            90/udp    DNSIX Sec. Attri. Token Map
mit-dov          91/tcp    MIT Dover Spooler
mit-dov          91/udp    MIT Dover Spooler
npp              92/tcp    Network Printing Protocol
npp              92/udp    Network Printing Protocol
dcp              93/tcp    Device Control Protocol
dcp              93/udp    Device Control Protocol
objcall          94/tcp    Tivoli Object Dispatcher
objcall          94/udp    Tivoli Object Dispatcher
supdup           95/tcp    SUPDUP
supdup           95/udp    SUPDUP
dixie            96/tcp    DIXIE Protocol Specification
dixie            96/udp    DIXIE Protocol Specification
swift-rvf        97/tcp    Swift Remote Virt. File Pro.
swift-rvf        97/udp    Swift Remote Virt. File Pro.
tacnews          98/tcp    TAC News
tacnews          98/udp    TAC News
metagram         99/tcp    Metagram Relay
metagram         99/udp    Metagram Relay
newacct         100/tcp    [unauthorized use]


TERMS OF USEABOUT USCONTACT USTECH RESOURCES

Copyright © 2009-2010 NetTrain.com. All rights reserved.


NetTrain practice exams are not sponsored by, endorsed by or affiliated with Cisco® Systems, Inc.

Cisco®, Cisco Systems®, CCENT, CCDA, CCNA, CCDP, CCNP, CCSP, CCIP, CCVP, CCDE, CCIE and the Cisco® Systems logo are trademarks or registered trademarks of Cisco® Systems, Inc. in the United States and certain other countries. All other trademarks are trademarks of their respective owners.