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PORT NUMBERS(last updated 2003-08-07) The port numbers are divided into three ranges: the Well Known Ports,the Registered Ports, and the Dynamic and/or Private Ports.The Well Known Ports are those from 0 through 1023.The Registered Ports are those from 1024 through 49151The Dynamic and/or Private Ports are those from 49152 through 65535### UNASSIGNED PORT NUMBERS SHOULD NOT BE USED. THE IANA WILL ASSIGNTHE NUMBER FOR THE PORT AFTER YOUR APPLICATION HAS BEEN APPROVED ###WELL KNOWN PORT NUMBERSThe Well Known Ports are assigned by the IANA and on most systems canonly be used by system (or root) processes or by programs executed byprivileged users.Ports are used in the TCP [RFC793] to name the ends of logicalconnections which carry long term conversations. For the purpose ofproviding services to unknown callers, a service contact port isdefined. This list specifies the port used by the server process asits contact port. The contact port is sometimes called the"well-known port".To the extent possible, these same port assignments are used with theUDP [RFC768].The range for assigned ports managed by the IANA is 0-1023.Port Assignments:Keyword Decimal Description References------- ------- ----------- ---------- 0/tcp Reserved 0/udp Reserved# Jon Postel <[email protected]>tcpmux 1/tcp TCP Port Service Multiplexertcpmux 1/udp TCP Port Service Multiplexer# Mark Lottor <[email protected]>compressnet 2/tcp Management Utilitycompressnet 2/udp Management Utilitycompressnet 3/tcp Compression Processcompressnet 3/udp Compression Process# Bernie Volz <[email protected]># 4/tcp Unassigned# 4/udp Unassignedrje 5/tcp Remote Job Entryrje 5/udp Remote Job Entry# Jon Postel <[email protected]># 6/tcp Unassigned# 6/udp Unassignedecho 7/tcp Echoecho 7/udp Echo# Jon Postel <[email protected]># 8/tcp Unassigned# 8/udp Unassigneddiscard 9/tcp Discarddiscard 9/udp Discard# Jon Postel <[email protected]># 10/tcp Unassigned# 10/udp Unassignedsystat 11/tcp Active Userssystat 11/udp Active Users# Jon Postel <[email protected]># 12/tcp Unassigned# 12/udp Unassigneddaytime 13/tcp Daytime (RFC 867)daytime 13/udp Daytime (RFC 867)# Jon Postel <[email protected]># 14/tcp Unassigned# 14/udp Unassigned# 15/tcp Unassigned [was netstat]# 15/udp Unassigned# 16/tcp Unassigned# 16/udp Unassignedqotd 17/tcp Quote of the Dayqotd 17/udp Quote of the Day# Jon Postel <[email protected]>msp 18/tcp Message Send Protocolmsp 18/udp Message Send Protocol# Rina Nethaniel <---none--->chargen 19/tcp Character Generatorchargen 19/udp Character Generatorftp-data 20/tcp File Transfer [Default Data]ftp-data 20/udp File Transfer [Default Data]ftp 21/tcp File Transfer [Control]ftp 21/udp File Transfer [Control]# Jon Postel <[email protected]>ssh 22/tcp SSH Remote Login Protocolssh 22/udp SSH Remote Login Protocol# Tatu Ylonen <[email protected]>telnet 23/tcp Telnettelnet 23/udp Telnet# Jon Postel <[email protected]> 24/tcp any private mail system 24/udp any private mail system# Rick Adams <[email protected]>smtp 25/tcp Simple Mail Transfersmtp 25/udp Simple Mail Transfer# Jon Postel <[email protected]># 26/tcp Unassigned# 26/udp Unassignednsw-fe 27/tcp NSW User System FEnsw-fe 27/udp NSW User System FE# Robert Thomas <[email protected]># 28/tcp Unassigned# 28/udp Unassignedmsg-icp 29/tcp MSG ICPmsg-icp 29/udp MSG ICP# Robert Thomas <[email protected]># 30/tcp Unassigned# 30/udp Unassignedmsg-auth 31/tcp MSG Authenticationmsg-auth 31/udp MSG Authentication# Robert Thomas <[email protected]># 32/tcp Unassigned# 32/udp Unassigneddsp 33/tcp Display Support Protocoldsp 33/udp Display Support Protocol# Ed Cain <[email protected]># 34/tcp Unassigned# 34/udp Unassigned 35/tcp any private printer server 35/udp any private printer server# Jon Postel <[email protected]># 36/tcp Unassigned# 36/udp Unassignedtime 37/tcp Timetime 37/udp Time# Jon Postel <[email protected]>rap 38/tcp Route Access Protocolrap 38/udp Route Access Protocol# Robert Ullmann <[email protected]>rlp 39/tcp Resource Location Protocolrlp 39/udp Resource Location Protocol# Mike Accetta <[email protected]># 40/tcp Unassigned# 40/udp Unassignedgraphics 41/tcp Graphicsgraphics 41/udp Graphicsname 42/tcp Host Name Servername 42/udp Host Name Servernameserver 42/tcp Host Name Servernameserver 42/udp Host Name Servernicname 43/tcp Who Isnicname 43/udp Who Ismpm-flags 44/tcp MPM FLAGS Protocolmpm-flags 44/udp MPM FLAGS Protocolmpm 45/tcp Message Processing Module [recv]mpm 45/udp
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