The Well Known Ports are assigned by the IANA and on most systems can only be used by system (or root) processes or by programs executed by privileged users.
Ports are used in the TCP [rfc793] 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. The contact port is sometimes called the "well-known port".
To the extent possible, these same port assignments are used with the UDP [rfc768].
The assigned ports use a small portion of the possible port numbers. For many years the assigned ports were in the range 0-255. Recently, the range for assigned ports managed by the IANA has been expanded to the range 0-1023.
Keyword Decimal Description References ------- ------- ----------- ---------- 0/tcp Reserved 0/udp Reserved tcpmux 1/tcp TCP Port Service Multiplexer tcpmux 1/udp TCP Port Service Multiplexer 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 daytime 13/udp Daytime # 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 Data] ftp-data 20/udp File Transfer [Default Data] 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 Message Processing Module [recv] mpm 45/udp Message Processing Module [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 Login Host Protocol (TACACS) tacacs 49/udp Login Host Protocol (TACACS) re-mail-ck 50/tcp Remote Mail Checking Protocol re-mail-ck 50/udp Remote Mail Checking Protocol la-maint 51/tcp IMP Logical Address Maintenance la-maint 51/udp IMP Logical Address Maintenance 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 private terminal access 57/udp any private 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 Communications Integrator (CI) covia 64/udp Communications 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 private dial out service 75/udp any private dial out service deos 76/tcp Distributed External Object Store deos 76/udp Distributed 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 Securit Attribute Token Map dnsix 90/udp DNSIX Securit Attribute 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 Virtural File Protocol swift-rvf 97/udp Swift Remote Virtural File Protocol 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] hostname 101/tcp NIC Host Name Server hostname 101/udp NIC Host Name Server iso-tsap 102/tcp ISO-TSAP Class 0 iso-tsap 102/udp ISO-TSAP Class 0 gppitnp 103/tcp Genesis Point-to-Point Trans Net gppitnp 103/udp Genesis Point-to-Point Trans Net acr-nema 104/tcp ACR-NEMA Digital Imag. & Comm. 300 acr-nema 104/udp ACR-NEMA Digital Imag. & Comm. 300 cso 105/tcp CCSO name server protocol cso 105/tcp CCSO name server protocol csnet-ns 105/tcp Mailbox Name Nameserver csnet-ns 105/udp Mailbox Name Nameserver 3com-tsmux 106/tcp 3COM-TSMUX 3com-tsmux 106/udp 3COM-TSMUX rtelnet 107/tcp Remote Telnet Service rtelnet 107/udp Remote Telnet Service snagas 108/tcp SNA Gateway Access Server snagas 108/udp SNA Gateway Access Server pop2 109/tcp Post Office Protocol - Version 2 pop2 109/udp Post Office Protocol - Version 2 pop3 110/tcp Post Office Protocol - Version 3 pop3 110/udp Post Office Protocol - Version 3 sunrpc 111/tcp SUN Remote Procedure Call sunrpc 111/udp SUN Remote Procedure Call mcidas 112/tcp McIDAS Data Transmission Protocol mcidas 112/udp McIDAS Data Transmission Protocol ident 113/tcp auth 113/tcp Authentication Service auth 113/udp Authentication Service audionews 114/tcp Audio News Multicast audionews 114/udp Audio News Multicast sftp 115/tcp Simple File Transfer Protocol sftp 115/udp Simple File Transfer Protocol ansanotify 116/tcp ANSA REX Notify ansanotify 116/udp ANSA REX Notify uucp-path 117/tcp UUCP Path Service uucp-path 117/udp UUCP Path Service sqlserv 118/tcp SQL Services sqlserv 118/udp SQL Services nntp 119/tcp Network News Transfer Protocol nntp 119/udp Network News Transfer Protocol cfdptkt 120/tcp CFDPTKT cfdptkt 120/udp CFDPTKT erpc 121/tcp Encore Expedited Remote Pro.Call erpc 121/udp Encore Expedited Remote Pro.Call smakynet 122/tcp SMAKYNET smakynet 122/udp SMAKYNET ntp 123/tcp Network Time Protocol ntp 123/udp Network Time Protocol ansatrader 124/tcp ANSA REX Trader ansatrader 124/udp ANSA REX Trader locus-map 125/tcp Locus PC-Interface Net Map Ser locus-map 125/udp Locus PC-Interface Net Map Ser unitary 126/tcp Unisys Unitary Login unitary 126/udp Unisys Unitary Login locus-con 127/tcp Locus PC-Interface Conn Server locus-con 127/udp Locus PC-Interface Conn Server gss-xlicen 128/tcp GSS X License Verification gss-xlicen 128/udp GSS X License Verification pwdgen 129/tcp Password Generator Protocol pwdgen 129/udp Password Generator Protocol cisco-fna 130/tcp cisco FNATIVE cisco-fna 130/udp cisco FNATIVE cisco-tna 131/tcp cisco TNATIVE cisco-tna 131/udp cisco TNATIVE cisco-sys 132/tcp cisco SYSMAINT cisco-sys 132/udp cisco SYSMAINT statsrv 133/tcp Statistics Service statsrv 133/udp Statistics Service ingres-net 134/tcp INGRES-NET Service ingres-net 134/udp INGRES-NET Service epmap 135/tcp DCE endpoint resolution epmap 135/udp DCE endpoint resolution profile 136/tcp PROFILE Naming System profile 136/udp PROFILE Naming System netbios-ns 137/tcp NETBIOS Name Service netbios-ns 137/udp NETBIOS Name Service netbios-dgm 138/tcp NETBIOS Datagram Service netbios-dgm 138/udp NETBIOS Datagram Service netbios-ssn 139/tcp NETBIOS Session Service netbios-ssn 139/udp NETBIOS Session Service emfis-data 140/tcp EMFIS Data Service emfis-data 140/udp EMFIS Data Service emfis-cntl 141/tcp EMFIS Control Service emfis-cntl 141/udp EMFIS Control Service bl-idm 142/tcp Britton-Lee IDM bl-idm 142/udp Britton-Lee IDM imap 143/tcp Internet Message Access Protocol imap 143/udp Internet Message Access Protocol news 144/tcp NewS news 144/udp NewS uaac 145/tcp UAAC Protocol uaac 145/udp UAAC Protocol iso-tp0 146/tcp ISO-IP0 iso-tp0 146/udp ISO-IP0 iso-ip 147/tcp ISO-IP iso-ip 147/udp ISO-IP jargon 148/tcp Jargon jargon 148/udp Jargon aed-512 149/tcp AED 512 Emulation Service aed-512 149/udp AED 512 Emulation Service sql-net 150/tcp SQL-NET sql-net 150/udp SQL-NET hems 151/tcp HEMS hems 151/udp HEMS bftp 152/tcp Background File Transfer Program bftp 152/udp Background File Transfer Program sgmp 153/tcp SGMP sgmp 153/udp SGMP netsc-prod 154/tcp NETSC netsc-prod 154/udp NETSC netsc-dev 155/tcp NETSC netsc-dev 155/udp NETSC sqlsrv 156/tcp SQL Service sqlsrv 156/udp SQL Service knet-cmp 157/tcp KNET/VM Command/Message Protocol knet-cmp 157/udp KNET/VM Command/Message Protocol pcmail-srv 158/tcp PCMail Server pcmail-srv 158/udp PCMail Server nss-routing 159/tcp NSS-Routing nss-routing 159/udp NSS-Routing sgmp-traps 160/tcp SGMP-TRAPS sgmp-traps 160/udp SGMP-TRAPS snmp 161/tcp SNMP snmp 161/udp SNMP snmptrap 162/tcp SNMPTRAP snmptrap 162/udp SNMPTRAP cmip-man 163/tcp CMIP/TCP Manager cmip-man 163/udp CMIP/TCP Manager cmip-agent 164/tcp CMIP/TCP Agent smip-agent 164/udp CMIP/TCP Agent xns-courier 165/tcp Xerox xns-courier 165/udp Xerox s-net 166/tcp Sirius Systems s-net 166/udp Sirius Systems namp 167/tcp NAMP namp 167/udp NAMP rsvd 168/tcp RSVD rsvd 168/udp RSVD send 169/tcp SEND send 169/udp SEND print-srv 170/tcp Network PostScript print-srv 170/udp Network PostScript multiplex 171/tcp Network Innovations Multiplex multiplex 171/udp Network Innovations Multiplex cl/1 172/tcp Network Innovations CL/1 cl/1 172/udp Network Innovations CL/1 xyplex-mux 173/tcp Xyplex xyplex-mux 173/udp Xyplex mailq 174/tcp MAILQ mailq 174/udp MAILQ vmnet 175/tcp VMNET vmnet 175/udp VMNET genrad-mux 176/tcp GENRAD-MUX genrad-mux 176/udp GENRAD-MUX xdmcp 177/tcp X Display Manager Control Protocol xdmcp 177/udp X Display Manager Control Protocol nextstep 178/tcp NextStep Window Server NextStep 178/udp NextStep Window Server bgp 179/tcp Border Gateway Protocol bgp 179/udp Border Gateway Protocol ris 180/tcp Intergraph ris 180/udp Intergraph unify 181/tcp Unify unify 181/udp Unify audit 182/tcp Unisys Audit SITP audit 182/udp Unisys Audit SITP ocbinder 183/tcp OCBinder ocbinder 183/udp OCBinder ocserver 184/tcp OCServer ocserver 184/udp OCServer remote-kis 185/tcp Remote-KIS remote-kis 185/udp Remote-KIS kis 186/tcp KIS Protocol kis 186/udp KIS Protocol aci 187/tcp Application Communication Interface aci 187/udp Application Communication Interface mumps 188/tcp Plus Five's MUMPS mumps 188/udp Plus Five's MUMPS qft 189/tcp Queued File Transport qft 189/udp Queued File Transport gacp 190/tcp Gateway Access Control Protocol cacp 190/udp Gateway Access Control Protocol prospero 191/tcp Prospero Directory Service prospero 191/udp Prospero Directory Service osu-nms 192/tcp OSU Network Monitoring System osu-nms 192/udp OSU Network Monitoring System srmp 193/tcp Spider Remote Monitoring Protocol srmp 193/udp Spider Remote Monitoring Protocol irc 194/tcp Internet Relay Chat Protocol irc 194/udp Internet Relay Chat Protocol dn6-nlm-aud 195/tcp DNSIX Network Level Module Audit dn6-nlm-aud 195/udp DNSIX Network Level Module Audit dn6-smm-red 196/tcp DNSIX Session Mgt Module Audit Redir dn6-smm-red 196/udp DNSIX Session Mgt Module Audit Redir dls 197/tcp Directory Location Service dls 197/udp Directory Location Service dls-mon 198/tcp Directory Location Service Monitor dls-mon 198/udp Directory Location Service Monitor smux 199/tcp SMUX smux 199/udp SMUX src 200/tcp IBM System Resource Controller src 200/udp IBM System Resource Controller at-rtmp 201/tcp AppleTalk Routing Maintenance at-rtmp 201/udp AppleTalk Routing Maintenance at-nbp 202/tcp AppleTalk Name Binding at-nbp 202/udp AppleTalk Name Binding at-3 203/tcp AppleTalk Unused at-3 203/udp AppleTalk Unused at-echo 204/tcp AppleTalk Echo at-echo 204/udp AppleTalk Echo at-5 205/tcp AppleTalk Unused at-5 205/udp AppleTalk Unused at-zis 206/tcp AppleTalk Zone Information at-zis 206/udp AppleTalk Zone Information at-7 207/tcp AppleTalk Unused at-7 207/udp AppleTalk Unused at-8 208/tcp AppleTalk Unused at-8 208/udp AppleTalk Unused qmtp 209/tcp The Quick Mail Transfer Protocol qmtp 209/udp The Quick Mail Transfer Protocol z39.50 210/tcp ANSI Z39.50 z39.50 210/udp ANSI Z39.50 914c/g 211/tcp Texas Instruments 914C/G Terminal 914c/g 211/udp Texas Instruments 914C/G Terminal anet 212/tcp ATEXSSTR anet 212/udp ATEXSSTR ipx 213/tcp IPX ipx 213/udp IPX vmpwscs 214/tcp VM PWSCS vmpwscs 214/udp VM PWSCS softpc 215/tcp Insignia Solutions softpc 215/udp Insignia Solutions CAIlic 216/tcp Computer Associates Int'l License Server CAIlic 216/udp Computer Associates Int'l License Server dbase 217/tcp dBASE Unix dbase 217/udp dBASE Unix mpp 218/tcp Netix Message Posting Protocol mpp 218/udp Netix Message Posting Protocol uarps 219/tcp Unisys ARPs uarps 219/udp Unisys ARPs imap3 220/tcp Interactive Mail Access Protocol v3 imap3 220/udp Interactive Mail Access Protocol v3 fln-spx 221/tcp Berkeley rlogind with SPX auth fln-spx 221/udp Berkeley rlogind with SPX auth rsh-spx 222/tcp Berkeley rshd with SPX auth rsh-spx 222/udp Berkeley rshd with SPX auth cdc 223/tcp Certificate Distribution Center cdc 223/udp Certificate Distribution Center # 224-241 Reserved direct 242/tcp Direct direct 242/udp Direct sur-meas 243/tcp Survey Measurement sur-meas 243/udp Survey Measurement dayna 244/tcp Dayna dayna 244/udp Dayna link 245/tcp LINK link 245/udp LINK dsp3270 246/tcp Display Systems Protocol dsp3270 246/udp Display Systems Protocol subntbcst_tftp 247/tcp SUBNTBCST_TFTP subntbcst_tftp 247/udp SUBNTBCST_TFTP bhfhs 248/tcp bhfhs bhfhs 248/udp bhfhs # 249-255 Reserved rap 256/tcp RAP rap 256/udp RAP set 257/tcp Secure Electronic Transaction set 257/udp Secure Electronic Transaction yak-chat 258/tcp Yak Winsock Personal Chat yak-chat 258/udp Yak Winsock Personal Chat esro-gen 259/tcp Efficient Short Remote Operations esro-gen 259/udp Efficient Short Remote Operations openport 260/tcp Openport openport 260/udp Openport nsiiops 261/tcp IIOP Name Service over TLS/SSL nsiiops 261/udp IIOP Name Service over TLS/SSL arcisdms 262/tcp Arcisdms arcisdms 262/udp Arcisdms hdap 263/tcp HDAP hdap 263/udp HDAP # 264-279 Unassigned http-mgmt 280/tcp http-mgmt http-mgmt 280/udp http-mgmt personal-link 281/tcp Personal Link personal-link 281/udp Personal Link cableport-ax 282/tcp Cable Port A/X cableport-ax 282/udp Cable Port A/X # 283-308 Unassigned entrusttime 309/tcp EntrustTime entrusttime 309/udp EntrustTime bhmds 310/tcp bhmds bhmds 310/udp bhmds # 311-343 Unassigned pdap 344/tcp Prospero Data Access Protocol pdap 344/udp Prospero Data Access Protocol pawserv 345/tcp Perf Analysis Workbench pawserv 345/udp Perf Analysis Workbench zserv 346/tcp Zebra server zserv 346/udp Zebra server fatserv 347/tcp Fatmen Server fatserv 347/udp Fatmen Server csi-sgwp 348/tcp Cabletron Management Protocol csi-sgwp 348/udp Cabletron Management Protocol mftp 349/tcp mftp mftp 349/udp mftp matip-type-a 350/tcp MATIP Type A matip-type-a 350/udp MATIP Type A matip-type-b 351/tcp MATIP Type B matip-type-b 351/udp MATIP Type B bhoetty 351/tcp bhoetty (added 5/21/97) bhoetty 351/udp bhoetty dtag-ste-sb 352/tcp DTAG dtag-ste-sb 352/udp DTAG bhoedap4 352/tcp bhoedap4 (added 5/21/97) bhoedap4 352/udp bhoedap4 # 353 Unassigned bh611 354/tcp bh611 bh611 354/udp bh611 # 355-356 Unassigned bhevent 357/tcp bhevent bhevent 357/udp bhevent # 358-370 Unassigned clearcase 371/tcp Clearcase clearcase 371/udp Clearcase ulistproc 372/tcp ListProcessor ulistproc 372/udp ListProcessor legent-1 373/tcp Legent Corporation legent-1 373/udp Legent Corporation legent-2 374/tcp Legent Corporation legent-2 374/udp Legent Corporation hassle 375/tcp Hassle hassle 375/udp Hassle nip 376/tcp Amiga Envoy Network Inquiry Proto nip 376/udp Amiga Envoy Network Inquiry Proto tnETOS 377/tcp NEC Corporation tnETOS 377/udp NEC Corporation dsETOS 378/tcp NEC Corporation dsETOS 378/udp NEC Corporation is99c 379/tcp TIA/EIA/IS-99 modem client is99c 379/udp TIA/EIA/IS-99 modem client is99s 380/tcp TIA/EIA/IS-99 modem server is99s 380/udp TIA/EIA/IS-99 modem server hp-collector 381/tcp hp performance data collector hp-collector 381/udp hp performance data collector hp-managed-node 382/tcp hp performance data managed node hp-managed-node 382/udp hp performance data managed node hp-alarm-mgr 383/tcp hp performance data alarm manager hp-alarm-mgr 383/udp hp performance data alarm manager arns 384/tcp A Remote Network Server System arns 384/udp A Remote Network Server System ibm-app 385/tcp IBM Application ibm-app 385/udp IBM Application asa 386/tcp ASA Message Router Object Def. asa 386/udp ASA Message Router Object Def. aurp 387/tcp Appletalk Update-Based Routing Pro. aurp 387/udp Appletalk Update-Based Routing Pro. unidata-ldm 388/tcp Unidata LDM Version 4 unidata-ldm 388/udp Unidata LDM Version 4 ldap 389/tcp Lightweight Directory Access Protocol ldap 389/udp Lightweight Directory Access Protocol uis 390/tcp UIS uis 390/udp UIS synotics-relay 391/tcp SynOptics SNMP Relay Port synotics-relay 391/udp SynOptics SNMP Relay Port synotics-broker 392/tcp SynOptics Port Broker Port synotics-broker 392/udp SynOptics Port Broker Port dis 393/tcp Data Interpretation System dis 393/udp Data Interpretation System embl-ndt 394/tcp EMBL Nucleic Data Transfer embl-ndt 394/udp EMBL Nucleic Data Transfer netcp 395/tcp NETscout Control Protocol netcp 395/udp NETscout Control Protocol netware-ip 396/tcp Novell Netware over IP netware-ip 396/udp Novell Netware over IP mptn 397/tcp Multi Protocol Trans. Net. mptn 397/udp Multi Protocol Trans. Net. kryptolan 398/tcp Kryptolan kryptolan 398/udp Kryptolan iso-tsap-c2 399/tcp ISO Transport Class 2 Non-Control over TCP iso-tsap-c2 399/udp ISO Transport Class 2 Non-Control over TCP work-sol 400/tcp Workstation Solutions work-sol 400/udp Workstation Solutions ups 401/tcp Uninterruptible Power Supply ups 401/udp Uninterruptible Power Supply genie 402/tcp Genie Protocol genie 402/udp Genie Protocol decap 403/tcp decap decap 403/udp decap nced 404/tcp nced nced 404/udp nced ncld 405/tcp ncld ncld 405/udp ncld imsp 406/tcp Interactive Mail Support Protocol imsp 406/udp Interactive Mail Support Protocol timbuktu 407/tcp Timbuktu timbuktu 407/udp Timbuktu prm-sm 408/tcp Prospero Resource Manager Sys. Man. prm-sm 408/udp Prospero Resource Manager Sys. Man. prm-nm 409/tcp Prospero Resource Manager Node Man. prm-nm 409/udp Prospero Resource Manager Node Man. decladebug 410/tcp DECLadebug Remote Debug Protocol decladebug 410/udp DECLadebug Remote Debug Protocol rmt 411/tcp Remote MT Protocol rmt 411/udp Remote MT Protocol synoptics-trap 412/tcp Trap Convention Port synoptics-trap 412/udp Trap Convention Port smsp 413/tcp SMSP smsp 413/udp SMSP infoseek 414/tcp InfoSeek infoseek 414/udp InfoSeek bnet 415/tcp BNet bnet 415/udp BNet silverplatter 416/tcp Silverplatter silverplatter 416/udp Silverplatter onmux 417/tcp Onmux onmux 417/udp Onmux hyper-g 418/tcp Hyper-G hyper-g 418/udp Hyper-G ariel1 419/tcp Ariel ariel1 419/udp Ariel smpte 420/tcp SMPTE smpte 420/udp SMPTE ariel2 421/tcp Ariel ariel2 421/udp Ariel ariel3 422/tcp Ariel ariel3 422/udp Ariel opc-job-start 423/tcp IBM Operations Planning and Control Start opc-job-start 423/udp IBM Operations Planning and Control Start opc-job-track 424/tcp IBM Operations Planning and Control Track opc-job-track 424/udp IBM Operations Planning and Control Track icad-el 425/tcp ICAD icad-el 425/udp ICAD smartsdp 426/tcp smartsdp smartsdp 426/udp smartsdp svrloc 427/tcp Server Location svrloc 427/udp Server Location ocs_cmu 428/tcp OCS_CMU ocs_cmu 428/udp OCS_CMU ocs_amu 429/tcp OCS_AMU ocs_amu 429/udp OCS_AMU utmpsd 430/tcp UTMPSD utmpsd 430/udp UTMPSD utmpcd 431/tcp UTMPCD utmpcd 431/udp UTMPCD iasd 432/tcp IASD iasd 432/udp IASD nnsp 433/tcp NNSP nnsp 433/udp NNSP mobileip-agent 434/tcp MobileIP-Agent mobileip-agent 434/udp MobileIP-Agent mobilip-mn 435/tcp MobilIP-MN mobilip-mn 435/udp MobilIP-MN dna-cml 436/tcp DNA-CML dna-cml 436/udp DNA-CML comscm 437/tcp comscm comscm 437/udp comscm dsfgw 438/tcp dsfgw dsfgw 438/udp dsfgw dasp 439/tcp dasp sgcp 440/tcp sgcp sgcp 440/udp sgcp decvms-sysmgt 441/tcp decvms-sysmgt decvms-sysmgt 441/udp decvms-sysmgt cvc_hostd 442/tcp cvc_hostd cvc_hostd 442/udp cvc_hostd https 443/tcp http protocol over TLS/SSL https 443/udp http protocol over TLS/SSL snpp 444/tcp Simple Network Paging Protocol snpp 444/udp Simple Network Paging Protocol microsoft-ds 445/tcp Microsoft-DS microsoft-ds 445/udp Microsoft-DS ddm-rdb 446/tcp DDM-RDB ddm-rdb 446/udp DDM-RDB ddm-dfm 447/tcp DDM-RFM ddm-dfm 447/udp DDM-RFM ddm-byte 448/tcp DDM-BYTE ddm-byte 448/udp DDM-BYTE as-servermap 449/tcp AS Server Mapper as-servermap 449/udp AS Server Mapper tserver 450/tcp TServer tserver 450/udp TServer sfs-smp-net 451/tcp Cray Network Semaphore server sfs-smp-net 451/udp Cray Network Semaphore server sfs-config 452/tcp Cray SFS config server sfs-config 452/udp Cray SFS config server creativeserver 453/tcp CreativeServer creativeserver 453/udp CreativeServer contentserver 454/tcp ContentServer contentserver 454/udp ContentServer creativepartnr 455/tcp CreativePartnr creativepartnr 455/udp CreativePartnr macon-tcp 456/tcp macon-tcp macon-udp 456/udp macon-udp scohelp 457/tcp scohelp scohelp 457/udp scohelp appleqtc 458/tcp apple quick time appleqtc 458/udp apple quick time ampr-rcmd 459/tcp ampr-rcmd ampr-rcmd 459/udp ampr-rcmd skronk 460/tcp skronk skronk 460/udp skronk datasurfsrv 461/tcp DataRampSrv datasurfsrv 461/udp DataRampSrv datasurfsrvsec 462/tcp DataRampSrvSec datasurfsrvsec 462/udp DataRampSrvSec alpes 463/tcp alpes alpes 463/udp alpes kpasswd 464/tcp kpasswd kpasswd 464/udp kpasswd smtps 465/tcp smtp protocol over TLS/SSL (was ssmtp) smtps 465/udp smtp protocol over TLS/SSL (was ssmtp) digital-vrc 466/tcp digital-vrc digital-vrc 466/udp digital-vrc mylex-mapd 467/tcp mylex-mapd mylex-mapd 467/udp mylex-mapd photuris 468/tcp proturis photuris 468/udp proturis rcp 469/tcp Radio Control Protocol rcp 469/udp Radio Control Protocol scx-proxy 470/tcp scx-proxy scx-proxy 470/udp scx-proxy mondex 471/tcp Mondex mondex 471/udp Mondex ljk-login 472/tcp ljk-login ljk-login 472/udp ljk-login hybrid-pop 473/tcp hybrid-pop hybrid-pop 473/udp hybrid-pop tn-tl-w1 474/tcp tn-tl-w1 tn-tl-w2 474/udp tn-tl-w2 tcpnethaspsrv 475/tcp tcpnethaspsrv tcpnethaspsrv 475/tcp tcpnethaspsrv tn-tl-fd1 476/tcp tn-tl-fd1 tn-tl-fd1 476/udp tn-tl-fd1 ss7ns 477/tcp ss7ns ss7ns 477/udp ss7ns spsc 478/tcp spsc spsc 478/udp spsc iafserver 479/tcp iafserver iafserver 479/udp iafserver iafdbase 480/tcp iafdbase iafdbase 480/udp iafdbase ph 481/tcp Ph service ph 481/udp Ph service bgs-nsi 482/tcp bgs-nsi bgs-nsi 482/udp bgs-nsi ulpnet 483/tcp ulpnet ulpnet 483/udp ulpnet integra-sme 484/tcp Integra Software Management Environment integra-sme 484/udp Integra Software Management Environment powerburst 485/tcp Air Soft Power Burst powerburst 485/udp Air Soft Power Burst avian 486/tcp avian avian 486/udp avian saft 487/tcp saft saft 487/udp saft gss-http 488/tcp gss-http gss-http 488/udp gss-http nest-protocol 489/tcp nest-protocol nest-protocol 489/udp nest-protocol micom-pfs 490/tcp micom-pfs micom-pfs 490/udp micom-pfs go-login 491/tcp go-login go-login 491/udp go-login ticf-1 492/tcp Transport Independent Convergence for FNA ticf-1 492/udp Transport Independent Convergence for FNA ticf-2 493/tcp Transport Independent Convergence for FNA ticf-2 493/udp Transport Independent Convergence for FNA pov-ray 494/tcp POV-Ray pov-ray 494/udp POV-Ray intecourier 495/tcp intecourier intecourier 495/udp intecourier pim-rp-disc 496/tcp PIM-RP-DISC pim-rp-disc 496/udp PIM-RP-DISC dantz 497/tcp dantz dantz 497/udp dantz siam 498/tcp siam siam 498/udp siam iso-ill 499/tcp ISO ILL Protocol iso-ill 499/udp ISO ILL Protocol isakmp 500/tcp isakmp isakmp 500/udp isakmp stmf 501/tcp STMF stmf 501/udp STMF asa-appl-proto 502/tcp asa-appl-proto asa-appl-proto 502/udp asa-appl-proto intrinsa 503/tcp Intrinsa intrinsa 503/udp Intrinsa citadel 504/tcp citadel citadel 504/udp citadel mailbox-lm 505/tcp mailbox-lm mailbox-lm 505/udp mailbox-lm ohimsrv 506/tcp ohimsrv ohimsrv 506/udp ohimsrv crs 507/tcp crs crs 507/udp crs xvttp 508/tcp xvttp xvttp 508/udp xvttp snare 509/tcp snare snare 509/udp snare fcp 510/tcp FirstClass Protocol fcp 510/udp FirstClass Protocol mynet 511/tcp mynet-as mynet 511/udp mynet-as exec 512/tcp remote process execution;authentication performed using # passwords and UNIX loppgin names comsat 512/udp biff 512/udp used by mail system to notify users of new mail received; currently # receives messages only from processes on the same machine login 513/tcp remote login a la telnet;automatic authentication performed # based on priviledged port numbers and distributed data bases which # identify "authentication domains" who 513/udp maintains data bases showing who's # logged in to machines on a local net and the load average of the # machine shell 514/tcp cmd # like exec, but automatic authentication # is performed as for login server syslog 514/udp printer 515/tcp spooler printer 515/udp spooler videotex 516/tcp videotex videotex 516/udp videotex talk 517/tcp like tenex link, but across machine - unfortunately, doesn't # use link protocol (this is actually just a rendezvous port from which a tcp connection is established) talk 517/udp like tenex link, but across # machine - unfortunately, doesn't use link protocol (this is actually # just a rendezvous port from which a tcp connection is established) ntalk 518/tcp ntalk 518/udp utime 519/tcp unixtime utime 519/udp unixtime efs 520/tcp extended file name server router 520/udp local routing process (on site); # uses variant of Xerox NS routing # information protocol ripng 521/tcp ripng ripng 521/udp ripng ulp 522/tcp ULP ulp 522/udp ULP ibm-db2 523/tcp IBM-DB2 ibm-db2 523/tcp IBM-DB2 ncp 524/tcp NCP ncp 524/udp NCP timed 525/tcp timeserver timed 525/udp timeserver tempo 526/tcp newdate tempo 526/udp newdate stx 527/tcp Stock IXChange stx 527/udp Stock IXChange custix 528/tcp Customer IXChange custix 528/udp Customer IXChange irc-serv 529/tcp IRC-SERV irc-serv 529/tcp IRC-SERV courier 530/tcp rpc courier 530/udp rpc conference 531/tcp chat conference 531/udp chat netnews 532/tcp readnews netnews 532/udp readnews netwall 533/tcp for emergency broadcasts netwall 533/udp for emergency broadcasts mm-admin 534/tcp MegaMedia Admin mm-admin 534/udp MegaMedia Admin iiop 535/tcp iiop iiop 535/udp iiop opalis-rdv 536/tcp opalis-rdv opalis-rdv 536/udp opalis-rdv nmsp 537/tcp Networked Media Streaming Protocol nmsp 537/udp Networked Media Streaming Protocol gdomap 538/tcp gdomap gdomap 538/udp gdomap apertus-ldp 539/tcp Apertus Technologies Load Determination apertus-ldp 539/udp Apertus Technologies Load Determination uucp 540/tcp uucpd uucp 540/udp uucpd uucp-rlogin 541/tcp uucp-rlogin uucp-rlogin 541/udp uucp-rlogin commerce 542/tcp commerce commerce 542/udp commerce klogin 543/tcp klogin 543/udp kshell 544/tcp krcmd kshell 544/udp krcmd appleqtcsrvr 545/tcp appleqtcsrvr appleqtcsrvr 545/udp appleqtcsrvr dhcpv6-client 546/tcp DHCPv6 Client dhcpv6-client 546/udp DHCPv6 Client dhcpv6-server 547/tcp DHCPv6 Server dhcpv6-server 547/udp DHCPv6 Server afpovertcp 548/tcp AFP over TCP afpovertcp 548/udp AFP over TCP idfp 549/tcp IDFP idfp 549/udp IDFP new-rwho 550/tcp new-who new-rwho 550/udp new-who cybercash 551/tcp cybercash cybercash 551/udp cybercash deviceshare 552/tcp deviceshare deviceshare 552/udp deviceshare pirp 553/tcp pirp pirp 553/udp pirp rtsp 554/tcp Real Time Stream Control Protocol rtsp 554/udp Real Time Stream Control Protocol dsf 555/tcp dsf 555/udp remotefs 556/tcp rfs server remotefs 556/udp rfs server openvms-sysipc 557/tcp openvms-sysipc openvms-sysipc 557/udp openvms-sysipc sdnskmp 558/tcp SDNSKMP sdnskmp 558/udp SDNSKMP teedtap 559/tcp TEEDTAP teedtap 559/udp TEEDTAP rmonitor 560/tcp rmonitord rmonitor 560/udp rmonitord monitor 561/tcp monitor 561/udp chshell 562/tcp chcmd chshell 562/udp chcmd nntps 563/tcp nntp protocol over TLS/SSL (was snntp) nntps 563/udp nntp protocol over TLS/SSL (was snntp) 9pfs 564/tcp plan 9 file service 9pfs 564/udp plan 9 file service whoami 565/tcp whoami whoami 565/udp whoami streettalk 566/tcp streettalk streettalk 566/udp streettalk banyan-rpc 567/tcp banyan-rpc banyan-rpc 567/udp banyan-rpc ms-shuttle 568/tcp microsoft shuttle ms-shuttle 568/udp microsoft shuttle ms-rome 569/tcp microsoft rome ms-rome 569/udp microsoft rome meter 570/tcp demon meter 570/udp demon meter 571/tcp udemon meter 571/udp udemon sonar 572/tcp sonar sonar 572/udp sonar banyan-vip 573/tcp banyan-vip banyan-vip 573/udp banyan-vip ftp-agent 574/tcp FTP Software Agent System ftp-agent 574/udp FTP Software Agent System vemmi 575/tcp VEMMI vemmi 575/udp VEMMI ipcd 576/tcp ipcd ipcd 576/udp ipcd vnas 577/tcp vnas vnas 577/udp vnas ipdd 578/tcp ipdd ipdd 578/udp ipdd decbsrv 579/tcp decbsrv decbsrv 579/udp decbsrv sntp-heartbeat 580/tcp SNTP HEARTBEAT sntp-heartbeat 580/udp SNTP HEARTBEAT bdp 581/tcp Bundle Discovery Protocol bdp 581/udp Bundle Discovery Protocol scc-security 582/tcp SCC Security scc-security 582/udp SCC Security philips-vc 583/tcp Philips Video-Conferencing philips-vc 583/udp Philips Video-Conferencing keyserver 584/tcp Key Server keyserver 584/udp Key Server imap4-ssl 585/tcp IMAP4+SSL (use 993 instead) imap4-ssl 585/udp IMAP4+SSL (use 993 instead) # Use of 585 is not recommended, use 993 instead password-chg 586/tcp Password Change password-chg 586/udp Password Change submission 587/tcp Submission submission 587/udp Submission cal 588/tcp CAL cal 588/udp CAL eyelink 589/tcp EyeLink eyelink 589/udp EyeLink tns-cml 590/tcp TNS CML tns-cml 590/udp TNS CML fmpro-http 591/tcp FMPRO4 - HTTP fmpro-http 591/udp FMPRO4 - HTTP eudora-set 592/tcp Eudora Set eudora-set 592/udp Eudora Set # 593-599 Unassigned ipcserver 600/tcp Sun IPC server ipcserver 600/udp Sun IPC server urm 606/tcp Cray Unified Resource Manager urm 606/udp Cray Unified Resource Manager nqs 607/tcp nqs nqs 607/udp nqs sift-uft 608/tcp Sender-Initiated/Unsolicited File Transfer sift-uft 608/udp Sender-Initiated/Unsolicited File Transfer npmp-trap 609/tcp npmp-trap npmp-trap 609/udp npmp-trap npmp-local 610/tcp npmp-local npmp-local 610/udp npmp-local npmp-gui 611/tcp npmp-gui npmp-gui 611/udp npmp-gui hmmp-ind 612/tcp HMMP Indication hmmp-ind 612/udp HMMP Indication hmmp-op 613/tcp HMMP Operation hmmp-op 613/udp HMMP Operation sshell 614/tcp SSLshell sshell 614/udp SSLshell sco-inetmgr 615/tcp Internet Configuration Manager sco-inetmgr 615/udp Internet Configuration Manager sco-sysmgr 616/tcp SCO System Administration Server sco-sysmgr 616/udp SCO System Administration Server sco-dtmgr 617/tcp SCO Desktop Administration Server sco-dtmgr 617/udp SCO Desktop Administration Server dei-icda 618/tcp DEI-ICDA dei-icda 618/udp DEI-ICDA digital-evm 619/tcp Digital EVM digital-evm 619/udp Digital EVM sco-websrvrmgr 620/tcp SCO WebServer Manager sco-websrvrmgr 620/udp SCO WebServer Manager escp-ip 621/tcp ESCP escp-ip 621/udp ESCP # 622-632 Unassigned servstat 633/tcp Service Status update (Sterling Software) servstat 633/udp Service Status update (Sterling Software) ginad 634/tcp ginad ginad 634/udp ginad rlzdbase 635/tcp RLZ DBase rlzdbase 635/udp RLZ DBase ldaps 636/tcp ldap protocol over TLS/SSL (was sldap) ldaps 636/udp ldap protocol over TLS/SSL (was sldap) lanserver 637/tcp lanserver lanserver 637/udp lanserver # 638-665 Unassigned mdqs 666/tcp mdqs 666/udp doom 666/tcp doom Id Software doom 666/udp doom Id Software disclose 667/tcp campaign contribution disclosures - SDR Technologies disclose 667/udp campaign contribution disclosures - SDR Technologies mecomm 668/tcp MeComm mecomm 668/udp MeComm meregister 669/tcp MeRegister meregister 669/udp MeRegister vacdsm-sws 670/tcp VACDSM-SWS vacdsm-sws 670/udp VACDSM-SWS vacdsm-app 671/tcp VACDSM-APP vacdsm-app 671/udp VACDSM-APP vpps-qua 672/tcp VPPS-QUA vpps-qua 672/udp VPPS-QUA cimplex 673/tcp CIMPLEX cimplex 673/udp CIMPLEX acap 674/tcp ACAP acap 674/udp ACAP dctp 675/tcp DCTP dctp 675/udp DCTP # 676-703 Unassigned elcsd 704/tcp errlog copy/server daemon elcsd 704/udp errlog copy/server daemon agentx 705/tcp AgentX agentx 705/udp AgentX # 706-708 Unassigned entrust-kmsh 709/tcp Entrust Key Management Service Handler entrust-kmsh 709/udp Entrust Key Management Service Handler entrust-ash 710/tcp Entrust Administration Service Handler entrust-ash 710/udp Entrust Administration Service Handler # 711-728 Unassigned netviewdm1 729/tcp IBM NetView DM/6000 Server/Client netviewdm1 729/udp IBM NetView DM/6000 Server/Client netviewdm2 730/tcp IBM NetView DM/6000 send/tcp netviewdm2 730/udp IBM NetView DM/6000 send/tcp netviewdm3 731/tcp IBM NetView DM/6000 receive/tcp netviewdm3 731/udp IBM NetView DM/6000 receive/tcp netgw 741/tcp netGW netgw 741/udp netGW netrcs 742/tcp Network based Rev. Cont. Sys. netrcs 742/udp Network based Rev. Cont. Sys. flexlm 744/tcp Flexible License Manager flexlm 744/udp Flexible License Manager # Matt Christiano fujitsu-dev 747/tcp Fujitsu Device Control fujitsu-dev 747/udp Fujitsu Device Control ris-cm 748/tcp Russell Info Sci Calendar Manager ris-cm 748/udp Russell Info Sci Calendar Manager kerberos-adm 749/tcp kerberos administration kerberos-adm 749/udp kerberos administration rfile 750/tcp loadav 750/udp kerberos-iv 750/udp kerberos version iv pump 751/tcp pump 751/udp qrh 752/tcp qrh 752/udp rrh 753/tcp rrh 753/udp tell 754/tcp send tell 754/udp send nlogin 758/tcp nlogin 758/udp con 759/tcp con 759/udp ns 760/tcp ns 760/udp rxe 761/tcp rxe 761/udp quotad 762/tcp quotad 762/udp cycleserv 763/tcp cycleserv 763/udp omserv 764/tcp omserv 764/udp webster 765/tcp webster 765/udp phonebook 767/tcp phone phonebook 767/udp phone vid 769/tcp vid 769/udp cadlock 770/tcp cadlock 770/udp rtip 771/tcp rtip 771/udp cycleserv2 772/tcp cycleserv2 772/udp submit 773/tcp notify 773/udp rpasswd 774/tcp acmaint_dbd 774/udp entomb 775/tcp acmaint_transd 775/udp wpages 776/tcp wpages 776/udp wpgs 780/tcp wpgs 780/udp concert 786/tcp Concert concert 786/udp Concert # 787-799 Unassigned mdbs_daemon 800/tcp mdbs_daemon 800/udp device 801/tcp device 801/udp # 802-885 Unassigned iclcnet-locate 886/tcp ICL coNETion locate server iclcnet-locate 886/udp ICL coNETion locate server iclcnet_svinfo 887/tcp ICL coNETion server info iclcnet_svinfo 887/udp ICL coNETion server info accessbuilder 888/tcp AccessBuilder accessbuilder 888/udp AccessBuilder # 889-899 Unassigned omginitialrefs 900/tcp OMG Initial Refs omginitialrefs 900/udp OMG Initial Refs # 889-910 Unassigned xact-backup 911/tcp xact-backup xact-backup 911/tcp xact-backup # 912-988 Unassigned ftps-data 989/tcp ftp protocol, data, over TLS/SSL ftps-data 989/udp ftp protocol, data, over TLS/SSL ftps 990/tcp ftp protocol, control, over TLS/SSL ftps 990/udp ftp protocol, control, over TLS/SSL nas 991/tcp Netnews Administration System nas 991/udp Netnews Administration System # Heiko Schlichting <heiko@fu-berlin.de> telnets 992/tcp telnet protocol over TLS/SSL telnets 992/udp telnet protocol over TLS/SSL imaps 993/tcp imap4 protocol over TLS/SSL imaps 993/udp imap4 protocol over TLS/SSL ircs 994/tcp irc protocol over TLS/SSL ircs 994/udp irc protocol over TLS/SSL pop3s 995/tcp pop3 protocol over TLS/SSL (was spop3) pop3s 995/udp pop3 protocol over TLS/SSL (was spop3) vsinet 996/tcp vsinet vsinet 996/udp vsinet maitrd 997/tcp maitrd 997/udp busboy 998/tcp puparp 998/udp garcon 999/tcp applix 999/udp Applix ac puprouter 999/tcp puprouter 999/udp cadlock 1000/tcp ock 1000/udp # 1001-1022 Unassigned 1023/tcp Reserved 1023/udp Reserved # End of Well Known Ports #
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