Ports 0 through 99
| Port | Protocol | Name | Description |
|---|---|---|---|
| 0 | None | None | Port 0 is marked "reserved" by IANA. On most (all?) operating systems, trying to bind to port 0 will actually bind to a random ephemeral port. Port 0 should not be seen in normal traffic. |
| 1 | TCP | tcpmux | TCP Port Service Multiplexer (RFC 1078). |
| 2 | TCP, UDP | compressnet | Management Utility |
| 3 | TCP, UDP | compressnet | Compression Process |
| 4 | Unassigned | ||
| 5 | TCP, UDP | rje | Remote Job Entry |
| 6 | Unassigned | Unassigned | |
| 7 | TCP, UDP | echo | EchoProtocol (RFC 862) |
| 8 | Unassigned | Unassigned | |
| 9 | TCP, UDP | discard, sink, null | DiscardProtocol (RFC 863) |
| 10 | Unassigned | Unassigned | |
| 11 | TCP, UDP | systat, users | ActiveUsersProtocol (RFC 866) |
| 12 | Unassigned | Unassigned | |
| 13 | TCP, UDP | daytime | DaytimeProtocol (RFC 867) (This is not the same thing as NetworkTimeProtocol) |
| 14 | Unassigned | Unassigned | |
| 15 | Unassigned | Was netstat | |
| 16 | Unassigned | Unassigned | |
| 17 | TCP, UDP | qotd, quote | QuoteOfTheDayProtocol (RFC 865) |
| 18 | TCP, UDP | msp | MessageSendProtocol (RFC 1159, RFC 1312) |
| 19 | TCP, UDP | chargen, ttytst, source | CharacterGeneratorProtocol (RFC 864) |
| 20 | TCP | ftp-data | Default FTP data port |
| 21 | TCP | ftp | FileTransferProtocol (RFC 959) |
| 22 | TCP | ssh | SecureShell (draft) |
| 23 | TCP | telnet | Telnet (RFC 854) |
| 24 | TCP, UDP | Reserved | Any private mail system |
| 25 | TCP | smtp | SimpleMailTransferProtocol (RFC 2821) |
| 26 | Unassigned | Unassigned | |
| 27 | TCP, UDP | nsw-fe | NSW User System FE |
| 28 | Unassigned | Unassigned | |
| 29 | TCP, UDP | msg-icp | MSG ICP |
| 30 | Unassigned | Unassigned | |
| 31 | TCP, UDP | msg-auth | MSG Authentication |
| 32 | Unassigned | Unassigned | |
| 33 | TCP, UDP | dsp | Display Support Protocol |
| 34 | Unassigned | Unassigned | |
| 35 | TCP, UDP | Reserved | Any private printer server |
| 36 | Unassigned | Unassigned | |
| 37 | TCP, UDP | time, timeserver | TimeProtocol (RFC 868) (This is not the same thing as NetworkTimeProtocol) |
| 38 | TCP, UDP | rap | RouteAccessProtocol (RFC 1476) |
| 39 | UDP | rlp | ResourceLocationProtocol (RFC 887) |
| 40 | Unassigned | Unassigned | |
| 41 | TCP, UDP | grapics | Graphics |
| 42 | UDP | nameserver | Internet Name Server (IEN 116) |
| 43 | TCP | whois, nicname | WhoisProtocol (RFC 954) |
| 44 | TCP, UDP | mpm-flags | MPM FLAGS Protocol |
| 45 | TCP, UDP | mpm | Message Processing Module [recv] |
| 46 | TCP, UDP | mpm-snd | MPM [default send] |
| 47 | TCP, UDP | ni-ftp | NI FTP |
| 48 | TCP, UDP | auditd | Digital Audit Daemon |
| 49 | TCP, UDP | tacacs | TacacsProtocol (RFC 1492) |
| 50 | TCP, UDP | re-mail-ck | Remote Mail Checking Protocol (RFC 1339) |
| 51 | TCP, UDP | la-maint | IMP Logical Address Maintenance |
| 52 | TCP, UDP | xns-time | XNS Time Protocol |
| 53 | TCP, UDP | domain, nameserver | DomainNameSystem (many RFCs) |
| 54 | TCP, UDP | xns-ch | XNS Clearinghouse |
| 55 | TCP, UDP | isi-gl | ISI Graphics Language |
| 56 | TCP, UDP | xns-auth | XNS Authentication |
| 57 | TCP, UDP | Reserved | Any private terminal access |
| 58 | TCP, UDP | xns-mail | XNS Mail |
| 59 | TCP, UDP | Reserved | Any private file service |
| 60 | Unassigned | Unassigned | |
| 61 | TCP, UDP | ni-mail | NI MAIL |
| 62 | TCP, UDP | acas | ACA Services http://h18000.www1.hp.com/info/SP4708/SP4708PF.PDF |
| 63 | TCP, UDP | whois++ | WHOIS++ (RFC 1835) |
| 64 | TCP, UDP | covia | Communications Integrator |
| 65 | TCP, UDP | tacacs-ds | TACACS Database Service |
| 66 | TCP, UDP | sql*net | Oracle SQL*Net |
| 67 | TCP, UDP | bootps | BootstrapProtocol Server (often used by DHCP) |
| 68 | TCP, UDP | bootpc | BootstrapProtocol Client (often used by DHCP) |
| 69 | TCP, UDP | tftp | TrivialFileTransferProtocol (RFC 1350) |
| 70 | TCP, UDP | gopher | GopherProtocol (RFC 1436) |
| 71 | TCP, UDP | netrjs-1 | Remote Job Service |
| 72 | TCP, UDP | netrjs-2 | Remote Job Service |
| 73 | TCP, UDP | netrjs-3 | Remote Job Service |
| 74 | TCP, UDP | netrjs-4 | Remote Job Service |
| 75 | TCP, UDP | Reserved | Any private dial out service |
| 76 | TCP, UDP | deos | Distributed External Object Store |
| 77 | TCP, UDP | Reserved | Any private RJE service |
| 78 | TCP, UDP | vettcp | vettcp |
| 79 | TCP, UDP | finger | FingerProtocol (RFC 1288) |
| 80 | TCP, UDP | www, http | Hyper_Text_Transfer_Protocol |
| 81 | TCP, UDP | hosts2-ns | HOSTS2 Name Server (More commonly used as an alternate HTTP port) |
| 82 | TCP, UDP | xfer | XFER Utility |
| 83 | TCP, UDP | mit-ml-dev | MIT ML Device |
| 84 | TCP, UDP | ctf | Common Trace Facility |
| 85 | TCP, UDP | mit-ml-dev | MIT ML Device |
| 86 | TCP, UDP | mfcobol | Micro Focus Cobol |
| 87 | TCP, UDP | Reserved | Any private terminal link |
| 88 | TCP, UDP | kerberos, kerberos5, krb5 | KerberosProtocol (RFC 1510 plus many drafts) |
| 89 | TCP, UDP | su-mit-tg | SU/MIT Telnet Gateway |
| 90 | TCP, UDP | dnsix | DNSIX Security Attribute Token Map (More commonly used by PointCast) |
| 91 | TCP, UDP | mit-dov | MIT Dover Spooler |
| 92 | TCP, UDP | npp | Network Printing Protocol (RFC 1486?) |
| 93 | TCP, UDP | dcp | Device Control Protocol |
| 94 | TCP, UDP | objcall | Tivoli Object Dispatcher |
| 95 | TCP, UDP | supdup | SUPDUP |
| 96 | TCP, UDP | dixie | DIXIE Protocol Specification |
| 97 | TCP, UDP | swift-rvf | Swift Remote Virtural File Protocol |
| 98 | TCP, UDP | tacnews | TAC News |
| 99 | TCP, UDP | metagram | Metagram Relay |
Imported from https://wiki.wireshark.org/PortReference/Ports0to99 on 2020-08-11 23:18:02 UTC