Commonly used default port lists and features Chinese annotations
Port Function English Note Function Chinese Note 1 TCPMUX TCP Port Service Multiplexer Transfer Control Protocol Port Service Multi-channel Switch Selector 2 CompressNet Management Utility CompressNet Management Utility 3 CompressNet Compression Process Compression Process 5 RJE Remote Job Entry Remote Job Sign in 7 Echo Echo Express 9 Discard Discard Discard 11 SYSTAT ACTIVE USERS Online User 13 Daytime Daytime Time 17 qotd Quote Of The Day Reference 18 MSP Message Send Protocol Message Send Protocol 19 Chargen Character Generator Character Generator 20 FTP-DATA File Transfer [Default Data] file transfer Protocol (default data port) 21 FTP file Transfer [Control] file transfer protocol (Control) 22 SSH SSH Remote Login Protocol SSH Remote Login Protocol 23 Telnet Telnet Terminal Simulation Protocol 24? Any Private Mail System reserved for personal mail system 25 SMTP simple Mail Transfer simple mail transmission protocol 27 nsw-fe NSW user system FE NSW-user systems field engineer 29 msg-icp mSG ICP mSG ICP 31 msg-auth mSG Authentication mSG verify 33 dsp display support protocol show support agreement 35? any private printer server Reserved for personal printer services 37 Time Time Time 38 RAP ROUTE Access Protocol Route Access Protocol 39 RLP Resource Location Protocol Resource Location Protocol 41 Graphics Graphics Graphics 42 Nameserver Wins Host Name Server WINS Host Name Service 43 NICName WHO IS "Nagket"
WHO IS Service 44 MPM-Flags MPM Flags Protocol MPM (Message Processing Module) Sign Protocol 45 MPM Message Processing Module [RECV] Message Processing Module 46 MPM-SND MPM [Default Send] Message Process Module (Default Send Port) 47 Ni-FTP NI FTP NI FTP 48 auditd digital Audit Daemon digital audio background service 49 tacacs Login host protocol (TACACS) TACACS login host agreement 50 re-mail-ck remote Mail checking protocol remote Mail check protocol 51 la-maint IMP Logical Address Maintenance IMP (Interface Information processor) logical address maintenance 52 XNS-TIME XNS TIME PROTOCOL SIL Network Service System Time Agreement 53 Domain Domain Name Server Domain Name Server 54 XNS-CH XNS Clearinghouse Single Network Service System Bill Exchange 55 ISI-GL ISI Graphics Language ISI Graphics Language 56 XNS-Auth XNS Authentication Xerox Network Service System Verification 57? Any Private Terminal Access Reserved Personal Terminal Access 58 XNS-Mail Xns Mail Xerox Network Service System Email 59? Any Private File Service Reserved personal file service 60? Unassigned undefined 61 Ni-mail ni mail ni mail? 62 ACAS ACA Services asynchronous communication adapter service 63 Whois WHOIS WHOIS
