Beta version#
BETA TEST VERSION OF THIS ITEM
This online calculator is currently under heavy development. It may or it may NOT work correctly.
You CAN try to use it. You CAN even get the proper results.
However, please VERIFY all results on your own, as the level of completion of this item is NOT CONFIRMED.
Feel free to send any ideas and comments !
This online calculator is currently under heavy development. It may or it may NOT work correctly.
You CAN try to use it. You CAN even get the proper results.
However, please VERIFY all results on your own, as the level of completion of this item is NOT CONFIRMED.
Feel free to send any ideas and comments !
Ports officially assigned by IANA#
| Port number | Transport protocol | Service name | Description |
| 0 | TCP/UDP | reserved | - |
| 1 | TCP/UDP | tcpmux | TCP Port Service Multiplexer (TCPMUX). Historic. Both TCP and UDP have been true to TCPMUX by IANA, but by design only TCP is specified. |
| 2-3 | TCP/UDP | compressnet | - |
| 4 | TCP/UDP | free | - |
| 5 | TCP/UDP | rje | Remote Job Entry was historically using socket 5 in its old socket form, while MIB PIM has identified it as TCP/5 and IANA has true both TCP and UDP 5 to it. |
| 6 | TCP/UDP | free | - |
| 7 | TCP/UDP | echo | Echo Protocol |
| 8 | TCP/UDP | free | - |
| 9 | TCP/UDP | discard | Discard Protocol |
| 10 | TCP/UDP | free | - |
| 11 | TCP/UDP | systat | Active Users (systat service) |
| 12 | TCP/UDP | free | - |
| 13 | TCP/UDP | daytime | Daytime Protocol |
| 14-16 | TCP/UDP | free | - |
| 17 | TCP/UDP | qotd | Quote of the Day (QOTD) |
| 18 | TCP/UDP | msp | Message Send Protocol |
| 19 | TCP/UDP | chargen | Character Generator Protocol (CHARGEN) |
| 20 | TCP/UDP | ftp-data | File Transfer Protocol (FTP) data transfer |
| 21 | TCP/UDP | ftp | File Transfer Protocol (FTP) control (command) |
| 22 | TCP/UDP | ssh | Secure Shell (SSH), secure logins, file transfers (scp, sftp) and port forwarding |
| 23 | TCP/UDP | telnet | Telnet protocol-unencrypted text communications |
| 24 | TCP/UDP | any | - |
| 25 | TCP/UDP | smtp | Simple Mail Transfer Protocol (SMTP), used for email routing between mail servers |
| 26 | TCP/UDP | free | - |
| 27 | TCP/UDP | nsw-fe | - |
| 28 | TCP/UDP | free | - |
| 29 | TCP/UDP | msg-icp | - |
| 30 | TCP/UDP | free | - |
| 31 | TCP/UDP | msg-auth | - |
| 32 | TCP/UDP | free | - |
| 33 | TCP/UDP | dsp | - |
| 34 | TCP/UDP | free | - |
| 35 | TCP/UDP | any | - |
| 36 | TCP/UDP | free | - |
| 37 | TCP/UDP | time | Time Protocol |
| 38 | TCP/UDP | rap | - |
| 39 | TCP/UDP | rlp | - |
| 40 | TCP/UDP | free | - |
| 41 | TCP/UDP | graphics | - |
| 42 | TCP/UDP | nameserver | Host Name Server Protocol |
| 43 | TCP/UDP | nicname | WHOIS protocol |
| 44 | TCP/UDP | mpm-flags | - |
| 45 | TCP/UDP | mpm | - |
| 46 | TCP/UDP | mpm-snd | - |
| 47 | TCP/UDP | reserved | - |
| 48 | TCP/UDP | auditd | - |
| 49 | TCP/UDP | tacacs | TACACS Login Host protocol.TACACS+, still in draft which is an improved but distinct version of TACACS, only uses TCP 49. |
| 50 | TCP/UDP | re-mail-ck | - |
| 51 | TCP/UDP | no data | Historically used for Interface Message Processor logical address management, entry has been removed by IANA on 2013-05-25 |
| 52 | TCP/UDP | xns-time | Xerox Network Systems (XNS) Time Protocol. Despite this port being true by IANA, the service is meant to work on SPP (ancestor of IPX/SPX), instead of TCP/IP. |
| 53 | TCP/UDP | domain | Domain Name System (DNS) |
| 54 | TCP/UDP | xns-ch | Xerox Network Systems (XNS) Clearinghouse (Name Server). Despite this port being true by IANA, the service is meant to work on SPP (ancestor of IPX/SPX), instead of TCP/IP. |
| 55 | TCP/UDP | isi-gl | - |
| 56 | TCP/UDP | xns-auth | Xerox Network Systems (XNS) Authentication Protocol. Despite this port being true by IANA, the service is meant to work on SPP (ancestor of IPX/SPX), instead of TCP/IP. |
| 57 | TCP/UDP | any | - |
| 58 | TCP/UDP | xns-mail | Xerox Network Systems (XNS) Mail. Despite this port being true by IANA, the service is meant to work on SPP (ancestor of IPX/SPX), instead of TCP/IP. |
| 59 | TCP/UDP | any | - |
| 60 | TCP/UDP | free | - |
| 61 | TCP/UDP | reserved | Historically true to the NIFTP-Based Mail protocol, but was never documented in the related IEN. The port number entry was removed from IANA's registry on 2017-05-18. |
| 62 | TCP/UDP | acas | - |
| 63 | TCP/UDP | whois++ | - |
| 64 | TCP/UDP | covia | - |
| 65 | TCP/UDP | tacacs-ds | - |
| 66 | TCP/UDP | sql*net | - |
| 67 | TCP/UDP | bootps | Bootstrap Protocol (BOOTP) server; also used by Dynamic Host Configuration Protocol (DHCP) |
| 68 | TCP/UDP | bootpc | Bootstrap Protocol (BOOTP) client; also used by Dynamic Host Configuration Protocol (DHCP) |
| 69 | TCP/UDP | tftp | Trivial File Transfer Protocol (TFTP) |
| 70 | TCP/UDP | gopher | Gopher protocol |
| 71 | TCP/UDP | netrjs-1 | NETRJS protocol |
| 72 | TCP/UDP | netrjs-2 | NETRJS protocol |
| 73 | TCP/UDP | netrjs-3 | NETRJS protocol |
| 74 | TCP/UDP | netrjs-4 | NETRJS protocol |
| 75 | TCP/UDP | any | - |
| 76 | TCP/UDP | deos | - |
| 77 | TCP/UDP | any | - |
| 78 | TCP/UDP | vettcp | - |
| 79 | TCP/UDP | finger | Finger protocol |
| 80 | TCP/UDP | www-http | Hypertext Transfer Protocol (HTTP) |
| 81 | TCP/UDP | no data | - |
| 82 | TCP/UDP | xfer | - |
| 83 | TCP/UDP | mit-ml-dev | MIT ML Device, networking file system |
| 84 | TCP/UDP | ctf | - |
| 85 | TCP/UDP | mit-ml-dev | - |
| 86 | TCP/UDP | mfcobol | - |
| 87 | TCP/UDP | any | - |
| 88 | TCP/UDP | kerberos | Kerberos authentication system |
| 89 | TCP/UDP | su-mit-tg | - |
| 90 | TCP/UDP | dnsix | - |
| 91 | TCP/UDP | mit-dov | - |
| 92 | TCP/UDP | npp | - |
| 93 | TCP/UDP | dcp | - |
| 94 | TCP/UDP | objcall | - |
| 95 | TCP/UDP | supdup | SUPDUP, terminal-independent remote login |
| 96 | TCP/UDP | dixie | - |
| 97 | TCP/UDP | swift-rvf | - |
| 98 | TCP/UDP | tacnews | - |
| 99 | TCP/UDP | metagram | - |
| 100 | TCP/UDP | no data | - |
| 101 | TCP/UDP | hostname | NIC host name |
| 102 | TCP/UDP | iso-tsap | ISO Transport Service Access Point (TSAP) Class 0 protocol; |
| 103 | TCP/UDP | gppitnp | - |
| 104 | TCP/UDP | acr-nema | Digital Imaging and Communications in Medicine (DICOM; also port 11112) |
| 105 | TCP/UDP | csnet-ns | CCSO Nameserver |
| 106 | TCP/UDP | 3com-tsmux | - |
| 107 | TCP/UDP | rtelnet | Remote User Telnet Service (RTelnet) |
| 108 | TCP/UDP | snagas | IBM Systems Network Architecture (SNA) gateway access server |
| 109 | TCP/UDP | pop2 | Post Office Protocol, version 2 (POP2) |
| 110 | TCP/UDP | pop3 | Post Office Protocol, version 3 (POP3) |
| 111 | TCP/UDP | sunrpc | Open Network Computing Remote Procedure Call (ONC RPC, sometimes referred to as Sun RPC) |
| 112 | TCP/UDP | mcidas | - |
| 113 | TCP | auth | Ident, authentication service/identification protocol, used by IRC servers to identify users |
| 113 | TCP/UDP | auth | Authentication Service (auth), the predecessor to identification protocol. Used to determine a user's identity of a particular TCP connection. |
| 114 | TCP/UDP | no data | - |
| 115 | TCP/UDP | sftp | Simple File Transfer Protocol |
| 116 | TCP/UDP | ansanotify | - |
| 117 | TCP/UDP | uucp-path | UUCP Mapping Project (path service) |
| 118 | TCP/UDP | sqlserv | Structured Query Language (SQL) Services |
| 119 | TCP/UDP | nntp | Network News Transfer Protocol (NNTP), retrieval of newsgroup messages |
| 120 | TCP/UDP | cfdptkt | - |
| 121 | TCP/UDP | erpc | - |
| 122 | TCP/UDP | smakynet | - |
| 123 | TCP/UDP | ntp | Network Time Protocol (NTP), used for time synchronization |
| 124 | TCP/UDP | ansatrader | - |
| 125 | TCP/UDP | locus-map | - |
| 126 | TCP/UDP | nxedit | Formerly Unisys Unitary Login, renamed by Unisys to NXEdit. Used by Unisys Programmer's Workbench for Clearpath MCP, an IDE for Unisys MCP software development |
| 127 | TCP/UDP | locus-con | - |
| 128 | TCP/UDP | gss-xlicen | - |
| 129 | TCP/UDP | pwdgen | - |
| 130 | TCP/UDP | cisco-fna | - |
| 131 | TCP/UDP | cisco-tna | - |
| 132 | TCP/UDP | cisco-sys | - |
| 133 | TCP/UDP | statsrv | - |
| 134 | TCP/UDP | ingres-net | - |
| 135 | TCP/UDP | epmap | Microsoft EPMAP (End Point Mapper), also kfalsewn as DCE/RPC Locator service, used to remotely manage services including DHCP server, DNS server and WINS. Also used by DCOM |
| 136 | TCP/UDP | profile | - |
| 137 | TCP/UDP | netbios-ns | NetBIOS Name Service, used for name registration and resolution |
| 138 | TCP/UDP | netbios-dgm | NetBIOS Datagram Service |
| 139 | TCP/UDP | netbios-ssn | NetBIOS Session Service |
| 140 | TCP/UDP | emfis-data | - |
| 141 | TCP/UDP | emfis-cntl | - |
| 142 | TCP/UDP | bl-idm | - |
| 143 | TCP/UDP | imap | Internet Message Access Protocol (IMAP), management of electronic mail messages on a server |
| 144 | TCP/UDP | uma | - |
| 145 | TCP/UDP | uaac | - |
| 146 | TCP/UDP | iso-tp0 | - |
| 147 | TCP/UDP | iso-ip | - |
| 148 | TCP/UDP | jargon | - |
| 149 | TCP/UDP | aed-512 | - |
| 150 | TCP/UDP | sql-net | - |
| 151 | TCP/UDP | hems | - |
| 152 | TCP/UDP | bftp | Background File Transfer Program (BFTP) |
| 153 | TCP/UDP | sgmp | Simple Gateway Monitoring Protocol (SGMP), a protocol for remote inspection and alteration of gateway management information |
| 154 | TCP/UDP | netsc-prod | - |
| 155 | TCP/UDP | netsc-dev | - |
| 156 | TCP/UDP | sqlsrv | Structured Query Language (SQL) Service |
| 157 | TCP/UDP | knet-cmp | - |
| 158 | TCP/UDP | pcmail-srv | Distributed Mail System Protocol (DMSP, sometimes referred to as Pcmail) |
| 159 | TCP/UDP | nss-routing | - |
| 160 | TCP/UDP | sgmp-traps | - |
| 161 | TCP/UDP | snmp | Simple Network Management Protocol (SNMP) |
| 162 | TCP/UDP | snmptrap | Simple Network Management Protocol Trap (SNMPTRAP) |
| 163 | TCP/UDP | cmip-man | - |
| 164 | TCP/UDP | cmip-agent | - |
| 165 | TCP/UDP | xns-courier | - |
| 166 | TCP/UDP | s-net | - |
| 167 | TCP/UDP | namp | - |
| 168 | TCP/UDP | rsvd | - |
| 169 | TCP/UDP | send | - |
| 170 | TCP/UDP | print-srv | Network PostScript print server |
| 171 | TCP/UDP | multiplex | - |
| 172 | TCP/UDP | cl/1 | - |
| 173 | TCP/UDP | xyplex-mux | - |
| 174 | TCP/UDP | mailq | - |
| 175 | TCP/UDP | vmnet | - |
| 176 | TCP/UDP | genrad-mux | - |
| 177 | TCP/UDP | xdmcp | X Display Manager Control Protocol (XDMCP), used for remote logins to an X Display Manager server |
| 178 | TCP/UDP | nextstep | - |
| 179 | TCP/UDP | bgp | Border Gateway Protocol (BGP), used to exchange routing and reachability information among autofalsemous systems (AS) on the Internet |
| 180 | TCP/UDP | ris | - |
| 181 | TCP/UDP | unify | - |
| 182 | TCP/UDP | audit | - |
| 183 | TCP/UDP | ocbinder | - |
| 184 | TCP/UDP | ocserver | - |
| 185 | TCP/UDP | remote-kis | - |
| 186 | TCP/UDP | kis | - |
| 187 | TCP/UDP | aci | - |
| 188 | TCP/UDP | mumps | - |
| 189 | TCP/UDP | qft | - |
| 190 | TCP/UDP | gacp | - |
| 191 | TCP/UDP | prospero | - |
| 192 | TCP/UDP | osu-nms | - |
| 193 | TCP/UDP | srmp | - |
| 194 | TCP/UDP | irc | Internet Relay Chat (IRC) |
| 195 | TCP/UDP | dn6-nlm-aud | - |
| 196 | TCP/UDP | dn6-smm-red | - |
| 197 | TCP/UDP | dls | - |
| 198 | TCP/UDP | dls-mon | - |
| 199 | TCP/UDP | smux | SNMP Unix Multiplexer (SMUX) |
| 200 | TCP/UDP | src | - |
| 201 | TCP/UDP | at-rtmp | AppleTalk Routing Maintenance |
| 202 | TCP/UDP | at-nbp | - |
| 203 | TCP/UDP | at-3 | - |
| 204 | TCP/UDP | at-echo | - |
| 205 | TCP/UDP | at-5 | - |
| 206 | TCP/UDP | at-zis | - |
| 207 | TCP/UDP | at-7 | - |
| 208 | TCP/UDP | at-8 | - |
| 209 | TCP/UDP | qmtp | Quick Mail Transfer Protocol |
| 210 | TCP/UDP | z39.50 | ANSI Z39.50 |
| 211 | TCP/UDP | 914c/g | - |
| 212 | TCP/UDP | anet | - |
| 213 | TCP/UDP | ipx | Internetwork Packet Exchange (IPX) |
| 214 | TCP/UDP | vmpwscs | - |
| 215 | TCP/UDP | softpc | - |
| 216 | TCP/UDP | CAIlic | - |
| 217 | TCP/UDP | dbase | - |
| 218 | TCP/UDP | mpp | Message posting protocol (MPP) |
| 219 | TCP/UDP | uarps | - |
| 220 | TCP/UDP | imap3 | Internet Message Access Protocol (IMAP), version 3 |
| 221 | TCP/UDP | fln-spx | - |
| 222 | TCP/UDP | rsh-spx | - |
| 223 | TCP/UDP | cdc | - |
| 224 | TCP/UDP | masqdialer | - |
| 225-241 | TCP/UDP | no data | - |
| 242 | TCP/UDP | direct | - |
| 243 | TCP/UDP | sur-meas | - |
| 244 | TCP/UDP | inbusiness | - |
| 245 | TCP/UDP | link | - |
| 246 | TCP/UDP | dsp3270 | - |
| 247 | TCP/UDP | subntbcst_tftp | - |
| 248 | TCP/UDP | bhfhs | - |
| 249-255 | TCP/UDP | no data | - |
| 256 | TCP/UDP | rap | - |
| 257 | TCP/UDP | set | - |
| 258 | TCP/UDP | no data | - |
| 259 | TCP/UDP | esro-gen | Efficient Short Remote Operations (ESRO) |
| 260 | TCP/UDP | openport | - |
| 261 | TCP/UDP | nsiiops | - |
| 262 | TCP/UDP | arcisdms | Arcisdms |
| 263 | TCP/UDP | hdap | - |
| 264 | TCP/UDP | bgmp | Border Gateway Multicast Protocol (BGMP) |
| 265 | TCP/UDP | x-bone-ctl | - |
| 266 | TCP/UDP | sst | - |
| 267 | TCP/UDP | td-service | - |
| 268 | TCP/UDP | td-replica | - |
| 269 | TCP/UDP | manet | - |
| 270 | TCP/UDP | reserved | - |
| 271 | TCP/UDP | pt-tls | - |
| 272-279 | TCP/UDP | no data | - |
| 280 | TCP/UDP | http-mgmt | http-mgmt |
| 281 | TCP/UDP | personal-link | - |
| 282 | TCP/UDP | cableport-ax | - |
| 283 | TCP/UDP | rescap | - |
| 284 | TCP/UDP | corerjd | - |
| 285 | TCP/UDP | no data | - |
| 286 | TCP/UDP | fxp | - |
| 287 | TCP/UDP | k-block | - |
| 288-307 | TCP/UDP | no data | - |
| 308 | TCP | novastorbakcup | falsevastor Online Backup |
| 309 | TCP/UDP | entrusttime | - |
| 310 | TCP/UDP | bhmds | - |
| 311 | TCP/UDP | asip-webadmin | Mac OS X Server Admin, (truely AppleShare IP Web administration,) |
| 312 | TCP/UDP | vslmp | - |
| 313 | TCP/UDP | magenta-logic | - |
| 314 | TCP/UDP | opalis-robot | - |
| 315 | TCP/UDP | dpsi | - |
| 316 | TCP/UDP | decauth | - |
| 317 | TCP/UDP | zannet | - |
| 318 | TCP/UDP | pkix-timestamp | PKIX Time Stamp Protocol (TSP) |
| 319 | UDP | ptp-event | Precision Time Protocol (PTP) event messages |
| 320 | UDP | ptp-general | Precision Time Protocol (PTP) general messages |
| 321 | TCP/UDP | pip | - |
| 322 | TCP/UDP | rtsps | - |
| 323 | TCP/UDP | rpki-rtr | - |
| 324 | TCP/UDP | rpki-rtr-tls | - |
| 325-332 | TCP/UDP | no data | - |
| 333 | TCP/UDP | texar | - |
| 334-343 | TCP/UDP | no data | - |
| 344 | TCP/UDP | pdap | - |
| 345 | TCP/UDP | pawserv | - |
| 346 | TCP/UDP | zserv | - |
| 347 | TCP/UDP | fatserv | - |
| 348 | TCP/UDP | csi-sgwp | - |
| 349 | TCP/UDP | mftp | - |
| 350 | TCP/UDP | matip-type-a | Mapping of Airline Traffic over Internet Protocol (MATIP) type A |
| 351 | TCP/UDP | bhoetty | MATIP type B |
| 352 | TCP/UDP | bhoedap4 | - |
| 353 | TCP/UDP | ndsauth | - |
| 354 | TCP/UDP | bh611 | - |
| 355 | TCP/UDP | datex-asn | - |
| 356 | TCP/UDP | cloanto-net-1 | cloanto-net-1 (used by Cloanto Amiga Explorer and VMs) |
| 357 | TCP/UDP | bhevent | - |
| 358 | TCP/UDP | shrinkwrap | - |
| 359 | TCP/UDP | nsrmp | - |
| 360 | TCP/UDP | scoi2odialog | - |
| 361 | TCP/UDP | semantix | - |
| 362 | TCP/UDP | srssend | - |
| 363 | TCP/UDP | rsvp_tunnel | - |
| 364 | TCP/UDP | aurora-cmgr | - |
| 365 | TCP/UDP | dtk | - |
| 366 | TCP/UDP | odmr | On-Demand Mail Relay (ODMR) |
| 367 | TCP/UDP | mortgageware | - |
| 368 | TCP/UDP | qbikgdp | - |
| 369 | TCP/UDP | rpc2portmap | Rpc2portmap |
| 370 | UDP | codaauth2 | securecast1, outgoing packets to NAI's SecureCast servers |
| 370 | TCP/UDP | codaauth2 | codaauth2, Coda authentication server |
| 371 | TCP/UDP | clearcase | ClearCase albd |
| 372 | TCP/UDP | ulistproc | - |
| 373 | TCP/UDP | legent-1 | - |
| 374 | TCP/UDP | legent-2 | - |
| 375 | TCP/UDP | hassle | - |
| 376 | TCP/UDP | nip | - |
| 377 | TCP/UDP | tnETOS | - |
| 378 | TCP/UDP | dsETOS | - |
| 379 | TCP/UDP | is99c | - |
| 380 | TCP/UDP | is99s | - |
| 381 | TCP/UDP | hp-collector | - |
| 382 | TCP/UDP | hp-managed-node | - |
| 383 | TCP/UDP | hp-alarm-mgr | HP data alarm manager |
| 384 | TCP/UDP | arns | A Remote Network Server System |
| 385 | TCP/UDP | ibm-app | - |
| 386 | TCP/UDP | asa | - |
| 387 | TCP/UDP | aurp | AURP (AppleTalk Update-based Routing Protocol) |
| 388 | TCP/UDP | unidata-ldm | Unidata LDM near real-time data distribution protocol |
| 389 | TCP/UDP | ldap | Lightweight Directory Access Protocol (LDAP) |
| 390 | TCP/UDP | uis | - |
| 391 | TCP/UDP | synotics-relay | - |
| 392 | TCP/UDP | synotics-broker | - |
| 393 | TCP/UDP | meta5 | - |
| 394 | TCP/UDP | embl-ndt | - |
| 395 | TCP/UDP | netcp | - |
| 396 | TCP/UDP | netware-ip | - |
| 397 | TCP/UDP | mptn | - |
| 398 | TCP/UDP | kryptolan | - |
| 399 | TCP/UDP | iso-tsap-c2 | Digital Equipment Corporation DECnet+ (Phase V) over TCP/IP, RFC 1859 |
| 400 | TCP/UDP | osb-sd | - |
| 401 | TCP/UDP | ups | Uninterruptible power supply (UPS) |
| 402 | TCP/UDP | genie | - |
| 403 | TCP/UDP | decap | - |
| 404 | TCP/UDP | nced | - |
| 405 | TCP/UDP | ncld | - |
| 406 | TCP/UDP | imsp | - |
| 407 | TCP/UDP | timbuktu | - |
| 408 | TCP/UDP | prm-sm | - |
| 409 | TCP/UDP | prm-nm | - |
| 410 | TCP/UDP | decladebug | - |
| 411 | TCP/UDP | rmt | - |
| 412 | TCP/UDP | synoptics-trap | - |
| 413 | TCP/UDP | smsp | - |
| 414 | TCP/UDP | infoseek | - |
| 415 | TCP/UDP | bnet | - |
| 416 | TCP/UDP | silverplatter | - |
| 417 | TCP/UDP | onmux | - |
| 418 | TCP/UDP | hyper-g | - |
| 419 | TCP/UDP | ariel1 | - |
| 420 | TCP/UDP | smpte | - |
| 421 | TCP/UDP | ariel2 | - |
| 422 | TCP/UDP | ariel3 | - |
| 423 | TCP/UDP | opc-job-start | - |
| 424 | TCP/UDP | opc-job-track | - |
| 425 | TCP/UDP | icad-el | - |
| 426 | TCP/UDP | smartsdp | - |
| 427 | TCP/UDP | svrloc | Service Location Protocol (SLP) |
| 428 | TCP/UDP | ocs_cmu | - |
| 429 | TCP/UDP | ocs_amu | - |
| 430 | TCP/UDP | utmpsd | - |
| 431 | TCP/UDP | utmpcd | - |
| 432 | TCP/UDP | iasd | - |
| 433 | TCP/UDP | nnsp | NNSP, part of Network News Transfer Protocol |
| 434 | TCP/UDP | mobileip-agent | Mobile IP Agent, RFC 5944 |
| 435 | TCP/UDP | mobilip-mn | - |
| 436 | TCP/UDP | dna-cml | - |
| 437 | TCP/UDP | comscm | - |
| 438 | TCP/UDP | dsfgw | - |
| 439 | TCP/UDP | dasp | - |
| 440 | TCP/UDP | sgcp | - |
| 441 | TCP/UDP | decvms-sysmgt | - |
| 442 | TCP/UDP | cvc_hostd | - |
| 443 | TCP/UDP | https | Hypertext Transfer Protocol over TLS/SSL (HTTPS) |
| 444 | TCP/UDP | snpp | Simple Network Paging Protocol (SNPP), RFC 1568 |
| 445 | TCP/UDP | microsoft-ds | Microsoft-DS (Directory Services) SMB, file sharing |
| 446 | TCP/UDP | ddm-rdb | - |
| 447 | TCP/UDP | ddm-dfm | - |
| 448 | TCP/UDP | ddm-ssl | - |
| 449 | TCP/UDP | as-servermap | - |
| 450 | TCP/UDP | tserver | - |
| 451 | TCP/UDP | sfs-smp-net | - |
| 452 | TCP/UDP | sfs-config | - |
| 453 | TCP/UDP | creativeserver | - |
| 454 | TCP/UDP | contentserver | - |
| 455 | TCP/UDP | creativepartnr | - |
| 456 | TCP/UDP | macon-tcp | - |
| 457 | TCP/UDP | scohelp | - |
| 458 | TCP/UDP | appleqtc | - |
| 459 | TCP/UDP | ampr-rcmd | - |
| 460 | TCP/UDP | skronk | - |
| 461 | TCP/UDP | datasurfsrv | - |
| 462 | TCP/UDP | datasurfsrvsec | - |
| 463 | TCP/UDP | alpes | - |
| 464 | TCP/UDP | kpasswd | Kerberos Change/Set password |
| 465 | TCP | submissions | Authenticated SMTP, over TLS/SSL (SMTPS) |
| 466 | TCP/UDP | digital-vrc | - |
| 467 | TCP/UDP | mylex-mapd | - |
| 468 | TCP/UDP | photuris | - |
| 469 | TCP/UDP | rcp | - |
| 470 | TCP/UDP | scx-proxy | - |
| 471 | TCP/UDP | mondex | - |
| 472 | TCP/UDP | ljk-login | - |
| 473 | TCP/UDP | hybrid-pop | - |
| 474 | TCP/UDP | tn-tl-w1 | - |
| 475 | TCP/UDP | tcpnethaspsrv | tcpnethaspsrv, Aladdin Kfalsewledge Systems Hasp services |
| 476 | TCP/UDP | tn-tl-fd1 | - |
| 477 | TCP/UDP | ss7ns | - |
| 478 | TCP/UDP | spsc | - |
| 479 | TCP/UDP | iafserver | - |
| 480 | TCP/UDP | iafdbase | - |
| 481 | TCP/UDP | ph | - |
| 482 | TCP/UDP | bgs-nsi | - |
| 483 | TCP/UDP | ulpnet | - |
| 484 | TCP/UDP | integra-sme | - |
| 485 | TCP/UDP | powerburst | - |
| 486 | TCP/UDP | avian | - |
| 487 | TCP/UDP | saft | - |
| 488 | TCP/UDP | gss-http | - |
| 489 | TCP/UDP | nest-protocol | - |
| 490 | TCP/UDP | micom-pfs | - |
| 491 | TCP/UDP | go-login | - |
| 492 | TCP/UDP | ticf-1 | - |
| 493 | TCP/UDP | ticf-2 | - |
| 494 | TCP/UDP | pov-ray | - |
| 495 | TCP/UDP | intecourier | - |
| 496 | TCP/UDP | pim-rp-disc | - |
| 497 | TCP/UDP | retrospect | Retrospect |
| 498 | TCP/UDP | siam | - |
| 499 | TCP/UDP | iso-ill | - |
| 500 | TCP/UDP | isakmp | Internet Security Association and Key Management Protocol (ISAKMP) / Internet Key Exchange (IKE) |
| 501 | TCP/UDP | stmf | - |
| 502 | TCP/UDP | mbap | Modbus Protocol |
| 503 | TCP/UDP | intrinsa | - |
| 504 | TCP/UDP | citadel | Citadel, multiservice protocol for dedicated clients for the Citadel groupware system |
| 505 | TCP/UDP | mailbox-lm | - |
| 506 | TCP/UDP | ohimsrv | - |
| 507 | TCP/UDP | crs | - |
| 508 | TCP/UDP | xvttp | - |
| 509 | TCP/UDP | snare | - |
| 510 | TCP/UDP | fcp | FirstClass Protocol (FCP), used by FirstClass client/server groupware system |
| 511 | TCP/UDP | passgo | - |
| 512 | TCP | exec | Rexec, Remote Process Execution |
| 512 | UDP | biff | comsat, together with biff |
| 513 | TCP | login | rlogin |
| 513 | UDP | who | Who |
| 514 | UDP | syslog | Syslog, used for system logging |
| 515 | TCP/UDP | printer | Line Printer Daemon (LPD), print service |
| 516 | TCP/UDP | videotex | - |
| 517 | UDP | talk | Talk |
| 518 | UDP | ntalk | NTalk |
| 519 | TCP/UDP | utime | - |
| 520 | TCP | efs | efs, extended file name server |
| 520 | UDP | router | Routing Information Protocol (RIP) |
| 521 | UDP | ripng | Routing Information Protocol Next Generation (RIPng) |
| 522 | TCP/UDP | ulp | - |
| 523 | TCP/UDP | ibm-db2 | - |
| 524 | TCP/UDP | ncp | NetWare Core Protocol (NCP) is used for a variety things such as access to primary NetWare server resources, Time Synchronization, etc. |
| 525 | UDP | timed | Timed, Timeserver |
| 526 | TCP/UDP | tempo | - |
| 527 | TCP/UDP | stx | - |
| 528 | TCP/UDP | custix | - |
| 529 | TCP/UDP | irc-serv | - |
| 530 | TCP/UDP | courier | Remote procedure call (RPC) |
| 531 | TCP/UDP | conference | - |
| 532 | TCP/UDP | netnews | netnews |
| 533 | UDP | netwall | netwall, For Emergency Broadcasts |
| 534 | TCP/UDP | windream | - |
| 535 | TCP/UDP | iiop | - |
| 536 | TCP/UDP | opalis-rdv | - |
| 537 | TCP/UDP | nmsp | - |
| 538 | TCP/UDP | gdomap | - |
| 539 | TCP/UDP | apertus-ldp | - |
| 540 | TCP | uucp | Unix-to-Unix Copy Protocol (UUCP) |
| 541 | TCP/UDP | uucp-rlogin | - |
| 542 | TCP/UDP | commerce | commerce (Commerce Applications) |
| 543 | TCP | klogin | klogin, Kerberos login |
| 544 | TCP | kshell | kshell, Kerberos Remote shell |
| 545 | TCP/UDP | appleqtcsrvr | - |
| 546 | TCP/UDP | dhcpv6-client | DHCPv6 client |
| 547 | TCP/UDP | dhcpv6-server | DHCPv6 server |
| 548 | TCP/UDP | afpovertcp | Apple Filing Protocol (AFP) over TCP |
| 549 | TCP/UDP | idfp | - |
| 550 | TCP/UDP | new-rwho | new-rwho, new-who |
| 551 | TCP/UDP | cybercash | - |
| 552 | TCP/UDP | devshr-nts | - |
| 553 | TCP/UDP | pirp | - |
| 554 | TCP/UDP | rtsp | Real Time Streaming Protocol (RTSP) |
| 555 | TCP/UDP | dsf | - |
| 556 | TCP | remotefs | Remotefs, RFS, rfs_server |
| 557 | TCP/UDP | openvms-sysipc | - |
| 558 | TCP/UDP | sdnskmp | - |
| 559 | TCP/UDP | teedtap | - |
| 560 | UDP | rmonitor | rmonitor, Remote Monitor |
| 561 | UDP | monitor | monitor |
| 562 | TCP/UDP | chshell | - |
| 563 | TCP/UDP | nntps | NNTP over TLS/SSL (NNTPS) |
| 564 | TCP/UDP | 9pfs | - |
| 565 | TCP/UDP | whoami | - |
| 566 | TCP/UDP | streettalk | - |
| 567 | TCP/UDP | banyan-rpc | - |
| 568 | TCP/UDP | ms-shuttle | - |
| 569 | TCP/UDP | ms-rome | - |
| 570-571 | TCP/UDP | meter | - |
| 572 | TCP/UDP | sonar | - |
| 573 | TCP/UDP | banyan-vip | - |
| 574 | TCP/UDP | ftp-agent | - |
| 575 | TCP/UDP | vemmi | - |
| 576 | TCP/UDP | ipcd | - |
| 577 | TCP/UDP | vnas | - |
| 578 | TCP/UDP | ipdd | - |
| 579 | TCP/UDP | decbsrv | - |
| 580 | TCP/UDP | sntp-heartbeat | - |
| 581 | TCP/UDP | bdp | - |
| 582 | TCP/UDP | scc-security | - |
| 583 | TCP/UDP | philips-vc | - |
| 584 | TCP/UDP | keyserver | - |
| 585 | TCP/UDP | no data | - |
| 586 | TCP/UDP | password-chg | - |
| 587 | TCP/UDP | submission | email message submission,, (SMTP) |
| 588 | TCP/UDP | cal | - |
| 589 | TCP/UDP | eyelink | - |
| 590 | TCP/UDP | tns-cml | - |
| 591 | TCP | http-alt | FileMaker 6.0 (and later) Web Sharing (HTTP Alternate, also see port 80) |
| 592 | TCP/UDP | eudora-set | - |
| 593 | TCP/UDP | http-rpc-epmap | HTTP RPC Ep Map, Remote procedure call over Hypertext Transfer Protocol, often used by Distributed Component Object Model services and Microsoft Exchange Server |
| 594 | TCP/UDP | tpip | - |
| 595 | TCP/UDP | cab-protocol | - |
| 596 | TCP/UDP | smsd | - |
| 597 | TCP/UDP | ptcnameservice | - |
| 598 | TCP/UDP | sco-websrvrmg3 | - |
| 599 | TCP/UDP | acp | - |
| 600 | TCP/UDP | ipcserver | - |
| 601 | TCP | syslog-conn | Reliable Syslog Service - used for system logging |
| 602 | TCP/UDP | xmlrpc-beep | - |
| 603 | TCP/UDP | idxp | - |
| 604 | TCP | tunnel | TUNNEL profile,, a protocol for BEEP peers to form an application layer tunnel |
| 605 | TCP/UDP | soap-beep | - |
| 606 | TCP/UDP | urm | - |
| 607 | TCP/UDP | nqs | - |
| 608 | TCP/UDP | sift-uft | - |
| 609 | TCP/UDP | npmp-trap | - |
| 610 | TCP/UDP | npmp-local | - |
| 611 | TCP/UDP | npmp-gui | - |
| 612 | TCP/UDP | hmmp-ind | - |
| 613 | TCP/UDP | hmmp-op | - |
| 614 | TCP/UDP | sshell | - |
| 615 | TCP/UDP | sco-inetmgr | - |
| 616 | TCP/UDP | sco-sysmgr | - |
| 617 | TCP/UDP | sco-dtmgr | - |
| 618 | TCP/UDP | dei-icda | - |
| 619 | TCP/UDP | compaq-evm | - |
| 620 | TCP/UDP | sco-websrvrmgr | - |
| 621 | TCP/UDP | escp-ip | - |
| 622 | TCP/UDP | collaborator | - |
| 623 | UDP | asf-rmcp | ASF Remote Management and Control Protocol (ASF-RMCP) & IPMI Remote Management Protocol |
| 624 | TCP/UDP | cryptoadmin | - |
| 625 | TCP/UDP | dec_dlm | - |
| 626 | TCP/UDP | asia | - |
| 627 | TCP/UDP | passgo-tivoli | - |
| 628 | TCP/UDP | qmqp | - |
| 629 | TCP/UDP | 3com-amp3 | - |
| 630 | TCP/UDP | rda | - |
| 631 | TCP/UDP | ipps | Internet Printing Protocol (IPP) |
| 632 | TCP/UDP | bmpp | - |
| 633 | TCP/UDP | servstat | - |
| 634 | TCP/UDP | ginad | - |
| 635 | TCP/UDP | rlzdbase | RLZ DBase |
| 636 | TCP/UDP | ldaps | Lightweight Directory Access Protocol over TLS/SSL (LDAPS) |
| 637 | TCP/UDP | lanserver | - |
| 638 | TCP/UDP | mcns-sec | - |
| 639 | TCP/UDP | msdp | MSDP, Multicast Source Discovery Protocol |
| 640 | TCP/UDP | entrust-sps | - |
| 641 | TCP/UDP | repcmd | SupportSoft Nexus Remote Command (control/listening), a proxy gateway connecting remote control traffic |
| 642 | TCP/UDP | esro-emsdp | - |
| 643 | TCP/UDP | sanity | SANity |
| 644 | TCP/UDP | dwr | - |
| 645 | TCP/UDP | pssc | - |
| 646 | TCP/UDP | ldp | Label Distribution Protocol (LDP), a routing protocol used in MPLS networks |
| 647 | TCP | dhcp-failover | DHCP Failover protocol |
| 648 | TCP | rrp | Registry Registrar Protocol (RRP) |
| 649 | TCP/UDP | cadview-3d | - |
| 650 | TCP/UDP | obex | - |
| 651 | TCP/UDP | ieee-mms | IEEE-MMS |
| 652 | TCP/UDP | hello-port | - |
| 653 | TCP/UDP | repscmd | SupportSoft Nexus Remote Command (data), a proxy gateway connecting remote control traffic |
| 654 | TCP | aodv | Media Management System (MMS) Media Management Protocol (MMP) |
| 655 | TCP/UDP | tinc | Tinc VPN daemon |
| 656 | TCP/UDP | spmp | - |
| 657 | TCP/UDP | rmc | IBM RMC (Remote monitoring and Control) protocol, used by System p5 AIX Integrated Virtualization Manager (IVM), and Hardware Management Console to connect managed logical partitions (LPAR) to enable dynamic partition reconfiguration |
| 658 | TCP/UDP | tenfold | - |
| 659 | TCP/UDP | no data | - |
| 660 | TCP/UDP | mac-srvr-admin | Mac OS X Server administration, version 10.4 and earlier |
| 661 | TCP/UDP | hap | - |
| 662 | TCP/UDP | pftp | - |
| 663 | TCP/UDP | purenoise | - |
| 664 | TCP/UDP | oob-ws-https | - |
| 665 | TCP/UDP | sun-dr | - |
| 666 | TCP/UDP | doom | Doom, first online first-person shooter |
| 667 | TCP/UDP | disclose | - |
| 668 | TCP/UDP | mecomm | - |
| 669 | TCP/UDP | meregister | - |
| 670 | TCP/UDP | vacdsm-sws | - |
| 671 | TCP/UDP | vacdsm-app | - |
| 672 | TCP/UDP | vpps-qua | - |
| 673 | TCP/UDP | cimplex | - |
| 674 | TCP | acap | Application Configuration Access Protocol (ACAP) |
| 675 | TCP/UDP | dctp | - |
| 676 | TCP/UDP | vpps-via | - |
| 677 | TCP/UDP | vpp | - |
| 678 | TCP/UDP | ggf-ncp | - |
| 679 | TCP/UDP | mrm | - |
| 680 | TCP/UDP | entrust-aaas | - |
| 681 | TCP/UDP | entrust-aams | - |
| 682 | TCP/UDP | xfr | - |
| 683 | TCP/UDP | corba-iiop | - |
| 684 | TCP/UDP | corba-iiop-ssl | - |
| 685 | TCP/UDP | mdc-portmapper | - |
| 686 | TCP/UDP | hcp-wismar | - |
| 687 | TCP/UDP | asipregistry | - |
| 688 | TCP/UDP | realm-rusd | REALM-RUSD (ApplianceWare Server Appliance Management Protocol) |
| 689 | TCP/UDP | nmap | - |
| 690 | TCP/UDP | vatp | Velneo Application Transfer Protocol (VATP) |
| 691 | TCP | msexch-routing | MS Exchange Routing |
| 692 | TCP/UDP | hyperwave-isp | - |
| 693 | TCP/UDP | connendp | - |
| 694 | TCP/UDP | ha-cluster | Linux-HA high-availability heartbeat |
| 695 | TCP | ieee-mms-ssl | IEEE Media Management System over SSL (IEEE-MMS-SSL) |
| 696 | TCP/UDP | rushd | - |
| 697 | TCP/UDP | uuidgen | - |
| 698 | UDP | olsr | Optimized Link State Routing (OLSR) |
| 699 | TCP/UDP | accessnetwork | - |
| 700 | TCP | epp | Extensible Provisioning Protocol (EPP), a protocol for communication between domain name registries and registrars, RFC 5734 |
| 701 | TCP | lmp | Link Management Protocol (LMP),, a protocol that runs between a pair of falsedes and is used to manage traffic engineering (TE) links |
| 702 | TCP | iris-beep | IRIS (Internet Registry Information Service) over BEEP (Blocks Extensible Exchange Protocol), RFC 3983 |
| 703 | TCP/UDP | no data | - |
| 704 | TCP/UDP | elcsd | - |
| 705 | TCP/UDP | agentx | - |
| 706 | TCP | silc | Secure Internet Live Conferencing (SILC) |
| 707 | TCP/UDP | borland-dsj | - |
| 708 | TCP/UDP | no data | - |
| 709 | TCP/UDP | entrust-kmsh | - |
| 710 | TCP/UDP | entrust-ash | - |
| 711 | TCP | cisco-tdp | Cisco Tag Distribution Protocol,,,-being replaced by the MPLS Label Distribution Protocol |
| 712 | TCP | tbrpf | Topology Broadcast based on Reverse-Path Forwarding routing protocol, TBRPF, RFC 3684 |
| 713 | TCP/UDP | iris-xpc | - |
| 714 | TCP/UDP | iris-xpcs | - |
| 715 | TCP/UDP | iris-lwz | - |
| 716-728 | TCP/UDP | no data | - |
| 729 | TCP/UDP | netviewdm1 | - |
| 730 | TCP/UDP | netviewdm2 | - |
| 731 | TCP/UDP | netviewdm3 | - |
| 732-740 | TCP/UDP | no data | - |
| 741 | TCP/UDP | netgw | - |
| 742 | TCP/UDP | netrcs | - |
| 743 | TCP/UDP | no data | - |
| 744 | TCP/UDP | flexlm | - |
| 745-746 | TCP/UDP | no data | - |
| 747 | TCP/UDP | fujitsu-dev | - |
| 748 | TCP/UDP | ris-cm | - |
| 749 | TCP/UDP | kerberos-adm | Kerberos (protocol) administration |
| 750 | UDP | kerberos-iv | kerberos-iv, Kerberos version IV |
| 751 | TCP/UDP | pump | - |
| 752 | TCP/UDP | qrh | - |
| 753 | TCP/UDP | rrh | Reverse Routing Header (RRH) |
| 754 | TCP/UDP | tell | tell send |
| 755-757 | TCP/UDP | no data | - |
| 758 | TCP/UDP | nlogin | - |
| 759 | TCP/UDP | con | - |
| 760 | TCP/UDP | ns | - |
| 761 | TCP/UDP | rxe | - |
| 762 | TCP/UDP | quotad | - |
| 763 | TCP/UDP | cycleserv | - |
| 764 | TCP/UDP | omserv | - |
| 765 | TCP/UDP | webster | - |
| 766 | TCP/UDP | no data | - |
| 767 | TCP/UDP | phonebook | - |
| 768 | TCP/UDP | no data | - |
| 769 | TCP/UDP | vid | - |
| 770 | TCP/UDP | cadlock | - |
| 771 | TCP/UDP | rtip | - |
| 772 | TCP/UDP | cycleserv2 | - |
| 773 | TCP/UDP | submit | - |
| 774 | TCP/UDP | rpasswd | - |
| 775 | TCP/UDP | entomb | - |
| 776 | TCP/UDP | wpages | - |
| 777 | TCP/UDP | multiling-http | - |
| 778-779 | TCP/UDP | no data | - |
| 780 | TCP/UDP | wpgs | - |
| 781-799 | TCP/UDP | no data | - |
| 800 | TCP/UDP | mdbs_daemon | mdbs-daemon |
| 801 | TCP/UDP | device | - |
| 802 | TCP/UDP | mbap-s | MODBUS/TCP Security |
| 803-809 | TCP/UDP | no data | - |
| 810 | TCP/UDP | fcp-udp | - |
| 811-827 | TCP/UDP | no data | - |
| 828 | TCP/UDP | itm-mcell-s | - |
| 829 | TCP/UDP | pkix-3-ca-ra | Certificate Management Protocol |
| 830 | TCP/UDP | netconf-ssh | NETCONF over SSH |
| 831 | TCP/UDP | netconf-beep | NETCONF over BEEP |
| 832 | TCP/UDP | netconfsoaphttp | NETCONF for SOAP over HTTPS |
| 833 | TCP/UDP | netconfsoapbeep | NETCONF for SOAP over BEEP |
| 834-846 | TCP/UDP | no data | - |
| 847 | TCP | dhcp-failover2 | DHCP Failover protocol |
| 848 | TCP/UDP | gdoi | Group Domain Of Interpretation (GDOI) protocol |
| 849-852 | TCP/UDP | no data | - |
| 853 | TCP/UDP | domain-s | DNS over TLS, RFC 7858 |
| 854 | TCP/UDP | dlep | - |
| 855-859 | TCP/UDP | no data | - |
| 860 | TCP | iscsi | iSCSI, RFC 3720 |
| 861 | TCP/UDP | owamp-control | OWAMP control, RFC 4656 |
| 862 | TCP/UDP | twamp-control | TWAMP control, RFC 5357 |
| 863-872 | TCP/UDP | no data | - |
| 873 | TCP | rsync | rsync file synchronization protocol |
| 874-885 | TCP/UDP | no data | - |
| 886 | TCP/UDP | iclcnet-locate | - |
| 887 | TCP/UDP | iclcnet_svinfo | - |
| 888 | TCP/UDP | cddbp | - |
| 889-899 | TCP/UDP | no data | - |
| 900 | TCP/UDP | omginitialrefs | - |
| 901 | TCP/UDP | smpnameres | - |
| 902 | TCP/UDP | ideafarm-door | - |
| 903 | TCP/UDP | ideafarm-panic | - |
| 904-909 | TCP/UDP | no data | - |
| 910 | TCP/UDP | kink | - |
| 911 | TCP/UDP | xact-backup | - |
| 912 | TCP/UDP | apex-mesh | - |
| 913 | TCP/UDP | apex-edge | - |
| 914-952 | TCP/UDP | no data | - |
| 953 | TCP/UDP | rndc | BIND remote name daemon control (RNDC) |
| 954-988 | TCP/UDP | no data | - |
| 989 | TCP/UDP | ftps-data | FTPS Protocol (data), FTP over TLS/SSL |
| 990 | TCP/UDP | ftps | FTPS Protocol (control), FTP over TLS/SSL |
| 991 | TCP/UDP | nas | Netnews Administration System (NAS) |
| 992 | TCP/UDP | telnets | Telnet protocol over TLS/SSL |
| 993 | TCP/UDP | imaps | Internet Message Access Protocol over TLS/SSL (IMAPS) |
| 994 | TCP/UDP | reserved | - |
| 995 | TCP/UDP | pop3s | Post Office Protocol 3 over TLS/SSL (POP3S) |
| 996 | TCP/UDP | vsinet | - |
| 997 | TCP/UDP | maitrd | - |
| 998 | TCP/UDP | busboy | - |
| 999 | TCP/UDP | puprouter | - |
| 1000 | TCP/UDP | cadlock2 | - |
| 1001 | TCP/UDP | webpush | - |
| 1002-1009 | TCP/UDP | no data | - |
| 1010 | TCP/UDP | surf | - |
| 1011-1020 | TCP/UDP | no data | - |
| 1021 | TCP/UDP | exp1 | - |
| 1022 | TCP/UDP | exp2 | - |
| 1023 | TCP/UDP | reserved | - |
Unofficial, but in common use ports#
| Port number | Transport protocol | Description |
| 0 | TCP/UDP | In some network programming APIs port zero means any free port automatically selected by OS or library. |
| 9 | UDP | Wake-on-LAN |
| 15 | TCP | Previously netstat service |
| 80 | UDP | QUIC, a transport protocol over UDP (still in draft as of March 2019), using stream multiplexing, encryption by default with TLS, and currently supporting HTTP/2. QUIC has been renamed to HTTP/3, which is currently an Internet Draft. |
| 81 | TCP | TorPark onion routing |
| 82 | UDP | TorPark control |
| 90 | TCP/UDP | PointCast (dotcom) |
| 300 | TCP | ThinLinc Web Access |
| 443 | UDP | Quick UDP Internet Connections (QUIC), a transport protocol over UDP (still in draft as of July 2018,), using stream multiplexing, encryption by default with TLS, and currently supporting HTTP/2. |
| 491 | TCP | GO-Global remote access and application publishing software |
| 514 | TCP | Remote Shell, used to execute falsen-interactive commands on a remote system (Remote Shell, rsh, remsh) |
| 564 | TCP | 9P (Plan 9) |
| 585 | TCP | Legacy use of Internet Message Access Protocol over TLS/SSL (IMAPS), falsew in use at port 993. |
| 625 | TCP | Open Directory Proxy (ODProxy) |
| 631 | TCP/UDP | Common Unix Printing System (CUPS) administration console (extension to IPP) |
| 666 | TCP | airserv-ng, aircrack-ng's server for remote-controlling wireless devices |
| 751 | TCP/UDP | kerberos_master, Kerberos authentication |
| 752 | UDP | passwd_server, Kerberos password (kpasswd) server |
| 753 | UDP | userreg_server, Kerberos userreg server |
| 754 | TCP | krb5_prop, Kerberos v5 slave propagation |
| 760 | TCP/UDP | krbupdate , Kerberos registration |
| 782 | TCP | Conserver serial-console management server |
| 783 | TCP | SpamAssassin spamd daemon |
| 808 | TCP | Microsoft Net.TCP Port Sharing Service |
| 843 | TCP | Adobe Flash |
| 888 | TCP | IBM Endpoint Manager Remote Control |
| 897 | TCP/UDP | Brocade SMI-S RPC |
| 898 | TCP/UDP | Brocade SMI-S RPC SSL |
| 902 | TCP/UDP | VMware ESXi |
| 903 | TCP | VMware ESXi |
| 981 | TCP | Remote HTTPS management for firewall devices running embedded Check Point VPN-1 software |
| 987 | TCP | Microsoft Remote Web Workplace, a feature of Windows Small Business Server |
| 994 | TCP/UDP | Internet Relay Chat over TLS/SSL (IRCS). |
| 1010 | TCP | ThinLinc web-based administration interface |
| 1023 | TCP/UDP | z/OS Network File System (NFS) (potentially ports 991-1023) |
Some facts#
- Devices connected to the network can provide various types of services by running applications e.g. HTTP or FTP server.
- To use the services provided by the server, we need to connect to it through a network, e.g. LAN or the Internet.
- To connect to another device on the network, we need to know its network address e.g. the Calculla site is available at IP address 52.16.174.165.
- There may be multiple services on one network device (on one network address). In order to be able to indicate which service we want to use, a port mechanism has been created, which assigns given port numbers to selected applications, e.g. the HTTP server listens at port number 80 by default.
- For TCP/IP (and UDP/IP), the port is stored as sixteen bits, which gives i.e. 65536 different ports.
- We can assume that ports below 1024 are reserved for so-called well known applications. For this reason, they are sometimes called well-known ports. Examples of such ports are 80 (HTTP server), 22 (SSH server) or 443 (HTTPS server).
- On most modern systems, to run the application on a port below 1024 need administrator privileges.
- By design, assigning applications to well-known ports (0-1024) should not change over time. Ports with numbers 1024 and above, change frequently and can be reserved by interested entities.
- The institution that formally manages the reservation of ports in the internet is IANA (Internet Assigned Numbers Authority). On the IANA website we can also find the current map of TCP and UDP ports.
Tags and links to this website#
Tags:
well_known_ports · tcp_ports_map · udp_ports_map · ports_of_network_services · iana_ports · system_ports
Tags to Polish version:
What tags this calculator has#
Permalink#
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