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The well known ports are assigned by IANA in the range of 0 to 1023


Port

Protocol

0

reserved.

1

TCPMUX, TCP Port Service Multiplexer.



2

Management Utility.

3

Compression Process.

4


5

Remote Job Entry.

6


7

Echo.



8


9

Discard.



10


11

SYSTAT.



12


13

Daytime.



14


15

[was netstat].

16


17

Quote, Quote of the Day.



18

RWP, Remote Write Protocol.


Send, Message Send Protocol.



19

Chargen, Character Generator Protocol.



20

FTP, File Transfer Protocol, data.



21

FTP, File Transfer Protocol, control.



22

SSH.



23

Telnet.



24

Any private mail system.

25

SMTP, Simple Mail Transfer Protocol.



26


27

NSW User System FE.

28


29

MSG ICP.

30


31

MSG Authentication.

32


33

Display Support Protocol.

34


35

Any private printer server.

36


37

Time, Time Protocol.



38

RAP, Internet Route Access Protocol.



39

RLP, Resource Location Protocol.



40


41

Graphics.

42

Internet Name Server.



43

Whois.



44

MPM FLAGS Protocol.

45

Internet Message Protocol.



46

MPM [default send].

47

NI FTP.

48

Digital Audit Daemon.

49

TACACS.


TACACS+.



50

RMCP, Remote Mail Checking Protocol.



51

IMP Logical Address Maintenance.

52

XNS Time Protocol.

53

DNS, Domain Name System.



54

XNS Clearinghouse.

55

ISI Graphics Language.

56

XNS Authentication.

57

MTP, Mail Transfer Protocol.



58

XNS Mail.

59

NFILE.



60


61

NI MAIL.

62

ACA Services.

63

Whois++.



64

Communications Integrator (CI).

65

TACACS-Database Service.

66

Oracle SQL*NET.

67

BOOTP, Bootstrap Protocol, server.



68

BOOTP, Bootstrap Protocol, client.



69

TFTP, Trivial File Transfer Protocol.



70

Gopher.



71

Remote Job Service.

72

Remote Job Service.

73

Remote Job Service.

74

Remote Job Service.

75

Any private dial out service.

76

Distributed External Object Store.

77

Any private RJE service.

78

vettcp.

79

Finger.



80

HTTP, HyperText Transfer Protocol.



81

HOSTS2 Name Server.

82

XFER Utility.

83

MIT ML Device.

84

Common Trace Facility.

85

MIT ML Device.

86

Micro Focus Cobol.

87

Any private terminal link.

88

Kerberos.



89

SU/MIT Telnet Gateway.

90

Is being used unofficially by Pointcast.

90

DNSIX Securit Attribute Token Map.

91

MIT Dover Spooler.

92

Network Printing Protocol.

93

Device Control Protocol.

94

Tivoli Object Dispatcher.

95

SUPDUP.

96

DIXIE.



97

Swift Remote Virtual File Protocol.

98

TAC News.

99

Metagram Relay.


Port

Protocol

100

[unauthorized use]

101

HOSTNAME.



102

TP0 over TCP.



103

Genesis Point-to-Point Trans Net.

104

ACR-NEMA Digital Imag. & Comm. 300.

105

Ph.



105

Mailbox Name Nameserver.

106

3COM-TSMUX.

107

Remote Telnet Service.



108

SNA Gateway Access Server.

109

POP, Post Office Protocol, version 2.



110

POP, Post Office Protocol, version 3.



111

Portmapper.



112

McIDAS Data Transmission Protocol.

113

Identification Protocol.



114


115

SFTP, Simple File Transfer Protocol.



116

ANSA REX Notify.

117

UUCP, Unix To Unix Copy.



118

SQL Services.

119

NNTP, Network News Transfer Protocol.



120

CFDP, Coherent File Distribution Protocol.



121

Encore Expedited Remote Pro.Call.

122

SMAKYNET.

123

NTP, Network Time Protocol.



124

ANSA REX Trader.

125

Locus PC-Interface Net Map Serv.

126

Unisys Unitary Login.

127

Locus PC-Interface Conn Server.

128

GSS X License Verification.

129

PWDGEN, Password Generator Protocol.



130

cisco FNATIVE.

131

cisco TNATIVE.

132

cisco SYSMAINT.

133

STATSRV, Statistics Server.



134

INGRES-NET Service.

135

DCE endpoint resolution.

136

PROFILE Naming System.

137

NETBIOS Name Service.



138

NETBIOS Datagram Service.



139

NETBIOS Session Service.



140

EMFIS Data Service.

141

EMFIS Control Service.

142

Britton-Lee IDM.

143

IMAP, Interactive Mail Access Protocol.



144

Universal Management Architecture.

145

UAAC Protocol.

146

TP0 bridge between TCP and X.25.



147

ISO-IP.



148

Jargon.

149

AED 512 Emulation Service.

150

SQL-NET.

151

HEMS.

152

BFTP, Background File Transfer Program.



153

SGMP, Simple Gateway Monitoring Protocol.



154


155

NETSC.

156

SQL Service.

157

KNET/VM Command/Message Protocol.

158

DMSP, Distributed Mail Service Protocol.



159

NSS-Routing.

160

SGMP-TRAPS.

161

SNMP, Simple Network Management Protocol.



162

SNMP, Simple Network Management Protocol traps.



163

CMIP/TCP Manager.

164

CMIP/TCP Agent.

165

Xerox.

166

Sirius Systems.

167

NAMP.

168

RSVD.

169

SEND.

170

Network PostScript.

171

Network Innovations Multiplex.

172

Network Innovations CL/1.

173

Xyplex.

174

MAILQ.

175

VMNET.

176

GENRAD-MUX.

177

XDMCP, X Display Manager Control Protocol.

178

NextStep Window Server.

179

BGP, Border Gateway Protocol.



180

Intergraph.

181

Unify.

182

Unisys Audit SITP.

183

OCBinder.

184

OCServer.

185

Knowbot Information Service.

186

KIS Protocol.

187

Application Communication Interface.

188

Plus Five's MUMPS.

189

Queued File Transport.

190

Gateway Access Control Protocol.

191

Prospero Directory Service.

192

OSU Network Monitoring System.

193

Spider Remote Monitoring Protocol.

194

Internet Relay Chat Protocol.

195

DNSIX Network Level Module Audit.

196

DNSIX Session Mgt Module Audit Redir.

197

Directory Location Service.

198

Directory Location Service Monitor.

199

SMUX.




Port

Protocol

200

IBM System Resource Controller.

201

AppleTalk Routing Maintenance.

202

AppleTalk Name Binding.

203

AppleTalk Unused.

204

AppleTalk Echo.

205

AppleTalk Unused.

206

AppleTalk Zone Information.

207

AppleTalk Unused.

208

AppleTalk Unused.

209

The Quick Mail Transfer Protocol.

210

Z39.50.



211

Texas Instruments 914C/G Terminal.

212

ATEXSSTR.

213

IPX.

214

VM PWSCS.

215

Insignia Solutions.

216

Computer Associates Int'l License Server.

217

dBASE Unix.

218

MPP, Message Posting Protocol.



219

Unisys ARPs.

220

IMAP, Interactive Mail Access Protocol, version 3.



221

Berkeley rlogind with SPX auth.

222

Berkeley rshd with SPX auth.

223

Certificate Distribution Center.

242

Direct.

243

Survey Measurement.

244

Dayna.

245

LINK.

246

Display Systems Protocol.

247

SUBNTBCST_TFTP.

248

bhfhs.

249


-


255


256

RAP.

257

Secure Electronic Transaction.

258

Yak Winsock Personal Chat.

259

ESRO, Efficient Short Remote Operations.



260

Openport.

261

IIOP Name Service over TLS/SSL.

262

Arcisdms.

263

HDAP.

264

BGMP, Border Gateway Multicast Protocol.



265

X-Bone CTL.

266

SCSI on ST.

267

Tobit David Service Layer.

268

Tobit David Replica.

269


-


279


280

http-mgmt.

281

Personal Link.

282

Cable Port A/X.

283

rescap.

284

corerjd.

285


286

FXP-1.

287

K-BLOCK.

288


-


299



Port

Protocol

300


-


307


308

Novastor Backup.

309

EntrustTime.

310

bhmds.

311

AppleShare IP WebAdmin.

312

VSLMP.

313

Magenta Logic.

314

Opalis Robot.

315

DPSI.

316

decAuth.

317

Zannet.

318

TSP, Time Stamp Protocol.



319

PTP Event.

320

PTP General.

321

PIP.

322

RTSPS.

323


-


332


333

Texar Security Port.

334


-


343


344

Prospero Data Access Protocol.

345

Performance Analysis Workbench.

346

Zebra server.

347

Fatmen Server.

348

Cabletron Management Protocol.

349

mftp.

350

MATIP, Mapping of Airline Traffic over Internet Protocol, Type A.



351

MATIP, Mapping of Airline Traffic over Internet Protocol, Type B.


bhoetty.

352

DTAG.

353

NDSAUTH.

354

bh611.

355

DATEX-ASN.

356

Cloanto Net 1.

357

bhevent.

358

Shrinkwrap.

359

Tenebris Network Trace Service.

360

scoi2odialog.

361

Semantix.

362

SRS Send.

363

RSVP Tunnel.



364

Aurora CMGR.

365

DTK.

366

SMTP, Simple Mail Transfer Protocol. ODMR, On-Demand Mail Relay.



367

MortgageWare.

368

QbikGDP.

369

rpc2portmap.

370

codaauth2.

371

Clearcase.

372

ListProcessor.

373

Legent Corporation.

374

Legent Corporation.

375

Hassle.

376

Amiga Envoy Network Inquiry Proto.

377

NEC Corporation.

378

NEC Corporation.

379

TIA/EIA/IS-99 modem client.

380

TIA/EIA/IS-99 modem server.

381

HP performance data collector.

382

HP performance data managed node.

383

HP performance data alarm manager.

384

A Remote Network Server System.

385

IBM Application.

386

ASA Message Router Object Def.

387

AURP, AppleTalk Update-based Routing Protocol.



388

Unidata LDM Version 4.

389

LDAP, Lightweight Directory Access Protocol.


CLDAP, Connection-less Lightweight X.500 Directory Access Protocol.



390

UIS.

391

SynOptics SNMP Relay Port.

392

SynOptics Port Broker Port.

393

Data Interpretation System.

394

EMBL Nucleic Data Transfer.

395

NETscout Control Protocol.

396

Novell Netware over IP.

397

Multi Protocol Trans. Net.

398

Kryptolan.

399

TP2 encapsulation.




Port

Protocol

400

Workstation Solutions.

401

Uninterruptible Power Supply.

402

Genie Protocol.

403

decap.

404

nced.

405

ncld.

406

Interactive Mail Support Protocol.

407

Timbuktu.

408

Prospero Resource Manager System Manager.

409

Prospero Resource Manager Node Manager.

410

DEC Ladebug Remote Debug Protocol.

411

Remote MT Protocol.

412

Trap Convention Port.

413

SMSP.

414

InfoSeek.

415

BNet.

416

Silverplatter.

417

Onmux.

418

Hyper-G.

419

Ariel.

420

SMPTE.

421

Ariel.

422

Ariel.

423

IBM Operations Planning and Control Start.

424

IBM Operations Planning and Control Track.

425

ICAD.

426

smartsdp

427

SLP, Service Location Protocol.



428

OCS_CMU.

429

OCS_AMU

430

UTMPSD

431

UTMPCD

432

IASD

433

NNSP

434

Mobile IP agent.



435

Mobile IP MN.

436

DNA-CML

437

comscm

438

dsfgw

439

dasp

440

sgcp

441

decvms-sysmgt

442

cvc_hostd

443

HTTPS, HTTP over SSL/TLS.



444

SNPP, Simple Network Paging Protocol.



445

Microsoft-DS.

446

DDM-RDB

447

DDM-RFM

448

DDM-SSL

449

AS Server Mapper

450

TServer

451

Cray Network Semaphore server

452

Cray SFS config server

453

CreativeServer

454

ContentServer

455

CreativePartnr

456

macon-tcp

457

scohelp

458

apple quick time

459

ampr-rcmd

460

skronk

461

DataRampSrv

462

DataRampSrvSec

463

alpes

464

Kerberos change/set password.



465

(TCP) URL Rendesvous Directory for SSM.


(UDP) IGMP over UDP for SSM.

466

digital-vrc

467

mylex-mapd

468

Photuris.



469

Radio Control Protocol.

470

scx-proxy

471

Mondex.

472

ljk-login.

473

hybrid-pop.

474

(TCP) tn-tl-w1.


(UDP) tn-tl-w2.

475

tcpnethaspsrv.

476

tn-tl-fd1.

477

ss7ns.

478

spsc.

479

iafserver.

480

iafdbase.

481

Ph service.

482

bgs-nsi.

483

ulpnet.

484

Integra Software Management Environment.

485

Air Soft Power Burst.

486

Avian.

487

SAFT, Simple Asynchronous File Transfer.

488

gss-http.

489

nest-protocol.

490

micom-pfs.

491

go-login.

492

Transport Independent Convergence for FNA.

493

Transport Independent Convergence for FNA.

494

POV-Ray.

495

intecourier.

496

PIM-RP-DISC.

497

dantz.

498

siam.

499

ISO ILL Protocol.


Port

Protocol

500

ISAKMP.


IKE, Internet Key Exchange.



501

STMF.

502

asa-appl-proto.

503

Intrinsa.

504

citadel.

505

mailbox-lm.

506

ohimsrv.

507

crs.

508

xvttp.

509

snare.

510

FirstClass Protocol.

511

mynet-as.

512

rexec, remote process execution.


Used by mail system to notify users of new mail received.

513

Rlogin.


Maintains data bases for who's logged on a local net and the average load of the machine.

514

Syslog.


cmd like exec but automatic authentication is performed for login server.

515

LPR.



516

videotex.

517

Like tenex link but across machine - doesn't use link protocol. A rendezvous port establishes a tcp connection.

518

ntalk.

519

unixtime.

520

RIP, Routing Information Protocol.


Extended file name server.

521

RIPng.



522

ULP.

523

IBM-DB2.

524

NCP.

525

timeserver.

526

newdate.

527

Stock IXChange.

528

Customer IXChange.

529

IRC-SERV.

530

rpc.

531

chat.

532

readnews.

533

emergency broadcasts.

534

MegaMedia Admin.

535

iiop.

536

opalis-rdv.

537

Networked Media Streaming Protocol.

538

gdomap.

539

Apertus Technologies Load Determination.

540

uucpd.

541

uucp-rlogin.

542

commerce.

543

klogin.

544

krcmd.

545

appleqtcsrvr.

546

DHCPv6 client.



547

DHCPv6 server.



548

AFP over TCP.

549

IDFP.

550

new-who.

551

cybercash.

552

deviceshare.

553

pirp.

554

RTSP, Real Time Streaming Protocol.



555

dsf.

556

rfs server.

557

openvms-sysipc.

558

SDNSKMP.

559

TEEDTAP.

560

rmonitord.

561

monitor.

562

chcmd.

563

NNTP over TLS/SSL (was snntp).



564

plan 9 file service.

565

whoami.

566

streettalk.

567

banyan-rpc.

568

microsoft shuttle.

569

microsoft rome.

570

demon.

571

udemon.

572

sonar.

573

banyan-vip.

574

FTP Software Agent System.

575

VEMMI, VErsatile MultiMedia Interface.



576

ipcd.

577

vnas.

578

ipdd.

579

decbsrv.

580

SNTP HEARTBEAT.

581

Bundle Discovery Protocol.



582

SCC Security.

583

Philips Video-Conferencing.

584

Key Server.

585

IMAP4+SSL (Use of 585 is not recommended use 993 instead).

586

Password Change.

587

Submission.

588

CAL.

589

EyeLink.

590

TNS CML.

591

FileMaker Inc. - HTTP Alternate (see Port 80).

592

Eudora Set.

593

HTTP RPC Ep Map.

594

TPIP.

595

CAB Protocol.

596

SMSD.

597

PTC Name Service.

598

SCO Web Server Manager 3.

599

Aeolon Core Protocol.


Port

Protocol

600

Sun IPC server.

601

Syslog.



602

XML-RPC over BEEP.



603

IDXP.

604

TUNNEL.



605

SOAP over BEEP.



606

Cray Unified Resource Manager.

607

nqs.

608

SIFT/UFT, Sender-Initiated/Unsolicited File Transfer.



609

npmp-trap.

610

npmp-local.

611

npmp-gui.

612

HMMP Indication.

613

HMMP Operation.

614

SSLshell.

615

Internet Configuration Manager.

616

SCO System Administration Server.

617

SCO Desktop Administration Server.

618

DEI-ICDA.

619

Digital EVM.

620

SCO WebServer Manager.

621

ESCP.

622

Collaborator.

623

Aux Bus Shunt.

624

Crypto Admin.

625

DEC DLM.

626

ASIA.

627

CKS & TIVIOLI.

628

QMQP.

629

3Com AMP3.

630

RDA.

631

IPP, Internet Printing Protocol.



632

bmpp.

633

Service Status update (Sterling Software).

634

ginad.

635

RLZ DBase.

636

ldap protocol over TLS/SSL (was sldap).

637

lanserver.

638

mcns-sec.

639

MSDP, Multicast Source Discovery Protocol.



640

entrust-sps.

641

repcmd.

642

EMSD over ESRO.



643

SANity.

644

dwr.

645

PSSC.

646

LDP, Label Distribution Protocol.



647

DHCP Failover Protocol.



648

RRP, Registry Registrar Protocol.



649

Aminet.

650

OBEX.

651

IEEE MMS.

652

DTCP, Dynamic Tunnel Configuration Protocol.



653

RepCmd.

654

AODV, Ad hoc On-Demand Distance Vector.



655

TINC.

656

SPMP.

657

RMC.

658

TenFold.

659

URL Rendezvous.

660

MacOS Server Admin.

661

HAP.

662

PFTP.

663

PureNoise.

664

Secure Aux Bus.

665

Sun DR.

666

Doom, Id Software.

667

Campaign contribution campaign contribution disclosures - SDR Technologies.

668

MeComm.

669

MeRegister.

670

VACDSM-SWS.

671

VACDSM-APP.

672

VPPS-QUA.

673

CIMPLEX.

674

ACAP, Application Configuration Access Protocol.



675

DCTP.

676

VPPS Via.

677

Virtual Presence Protocol.

678

GNU Gereration Foundation NCP.

679

MRM.

680

entrust-aaas.

681

entrust-aaas.

682

XFR.

683

CORBA IIOP.

684

CORBA IIOP SSL.

685

MDC Port Mapper.

686

Hardware Control Protocol Wismar.

687

asipregistry.

688

REALM-RUSD.

689

NMAP.

690

VATP.

691

MS Exchange Routing.

692

Hyperwave-ISP.

693

connendp.

694

ha-cluster.

695

IEEE-MMS-SSL.

696

RUSHD.

697

UUIDGEN.

698

OLSR, Optimized Link State Routing.



699

Access Network.


Port

Protocol

700

EPP, Extensible Provisioning Protocol.



700


-


703


704

errlog copy/server daemon.

705

AgentX.



706

SILC, Secure Internet Live Conferencing.



707

Borland DSJ.

708


709

Entrust Key Management Service Handler.

710

Entrust Administration Service Handler.

711

TDP, Tag Distribution Protocol.



712

TBRPF, Topology Broadcast based on Reverse-Path Forwarding.



713


-


719


720

DVMP, Distance Vectored Monitoring Protocol.


SMQP, Simple Message Queue Protocol.

721

XSRP, eXtensible Service Registration Protocol.

722


723

XSTP, eXtensible Service Transfer Protocol.

724


725

XSSP, eXtensible Service Subscription Protocol.

726


727

XSLP, eXtensible Service Location Protocol.

728


729

IBM NetView DM/6000 Server/Client.

730

IBM NetView DM/6000 send TCP.

731

IBM NetView DM/6000 receive TCP.

732


-


740


741

netGW.

742

Network based Rev. Cont. Sys.

743


744

Flexible License Manager.

745


746


747

Fujitsu Device Control.

748

Russell Info Sci Calendar Manager.

749

kerberos administration.

750

kerberos version iv.

751

pump.

752

qrh.

753

rrh.

754

send

755


756


757


758

nlogin.

759

con.

760

ns.

761

rxe.

762

quotad.

763

cycleserv.

764

omserv.

765

webster.

766


767

phone.

768


769

vid.

770

cadlock.

771

rtip.

772

cycleserv2.

773

submit.

774

rpasswd.


acmaint_dbd.

775

entomb.


acmaint_transd.

776

wpages.

777

Multiling HTTP.

778


779


780

wpgs.

781


-


799



Port

Protocol

800

mdbs_daemon.

801

device.

802


-


809


810

FCP.

811


-


827


828

itm-mcell-s.

829

CMP, Certificate Management Protocols.



830


-


846


847

dhcp-failover 2.

848

GDOI, Group Domain of Interpretation.



849


-


859


860

iSCSI.

861


-


872


873

rsync.

874


-


885


886

ICL coNETion locate server.

887

ICL coNETion server info.

888

AccessBuilder.


CD Database Protocol.

889


-


899



Port

Protocol

900

OMG Initial Refs.

901

SMPNAMERES.

902

IDEAFARM-CHAT.

903

IDEAFARM-CATCH.

904


-


910


911

xact-backup.

912

APEX relay-relay service.

913

APEX endpoint-relay service.

914


-


988


989

ftp data over TLS/SSL.

990

ftp control over TLS/SSL.

991

NAS, Netnews Administration System.

992

telnet over TLS/SSL.

993

imap4 over TLS/SSL.

994

irc over TLS/SSL.

995

pop3 over TLS/SSL (was spop3).

996

vsinet.

997

maitrd.

998

busboy.

puparp.


999

Applix ac.