| 1 | ✔ | ✔ | tcpmux | TCP Port Multiplexer |
| 5 | ✔ | ✔ | rje | Remote Job Entry (Jobferneingabe) |
| 7 | ✔ | ✔ | echo | Echo-Service |
| 9 | ✔ | ✔ | discard | Null-Service für Prüfzwecke |
| 11 | ✔ | ✔ | systat | Systeminformationen |
| 13 | ✔ | ✔ | daytime | Zeit- und Datumsangaben |
| 17 | ✔ | ✔ | qotd | Sendet Zitat des Tages |
| 18 | ✔ | ✔ | msp | Übermittelt Textnachrichten |
| 19 | ✔ | ✔ | chargen | Sendet eine endlose Zeichenkette |
| 20 | ✔ | | ftp-data | FTP-Datenübertragung |
| 21 | ✔ | ✔ | ftp | FTP-Verbindung |
| 22 | ✔ | ✔ | ssh | Secure Shell Service |
| 23 | ✔ | | telnet | Telnet-Service |
| 25 | ✔ | | smtp | Simple Mail Transfer Protocol |
| 37 | ✔ | ✔ | time | Maschinenlesbares Zeitprotokoll |
| 39 | ✔ | ✔ | rlp | Resource Location Protocol |
| 42 | ✔ | ✔ | nameserver | Name-Service |
| 43 | ✔ | | nicname | WHOIS-Verzeichnisservice |
| 49 | ✔ | ✔ | tacacs | Terminal Access Controller Access Control System |
| 50 | ✔ | ✔ | re-mail-ck | Remote Mail Checking |
| 53 | ✔ | ✔ | domain | Namensauflösung per DNS |
| 67 | | ✔ | bootps | Bootstrap Protocol Services |
| 68 | | ✔ | bootpc | Bootstrap Client |
| 69 | | ✔ | tftp | Trivial File Transfer Protocol |
| 70 | ✔ | | gopher | Dokumentensuche |
| 71 | ✔ | | genius | Geniusprotokoll |
| 79 | ✔ | | finger | Liefert Kontaktinformationen von Benutzern |
| 80 | ✔ | | http | Hypertext Transfer Protocol |
| 81 | ✔ | | | Torpark: Onion-Routing (inoffiziell) |
| 82 | | ✔ | | Torpark: Control (inoffiziell) |
| 88 | ✔ | ✔ | kerberos | Netzwerkauthentifizierungssystem |
| 101 | ✔ | | hostname | NIC Host Name |
| 102 | ✔ | | Iso-tsap | ISO-TSAP-Protocol |
| 105 | ✔ | ✔ | csnet-ns | Mailbox-Mailserver |
| 107 | ✔ | | rtelnet | Remote Telnet |
| 109 | ✔ | | pop2 | Post Office Protocol v2 für die E-Mail-Kommunikation |
| 110 | ✔ | | pop3 | Post Office Protocol v3 für die E-Mail-Kommunikation |
| 111 | ✔ | ✔ | sunrpc | RPC-Protokoll für NFS |
| 113 | | ✔ | auth | Authentifizierungsservice |
| 115 | ✔ | | sftp | Simple File Transfer Protocol (einfache Version von FTP) |
| 117 | ✔ | | uucp-path | Dateiübertragung zwischen Unix-Systemen |
| 119 | ✔ | | nntp | Übertragung von Nachrichten in Newsgroups |
| 123 | | ✔ | ntp | Dienst zur Zeitsynchronisierung |
| 137 | ✔ | ✔ | netbios-ns | NETBIOS Name Service |
| 138 | ✔ | ✔ | netbios-dgm | NETBIOS Datagram Service |
| 139 | ✔ | ✔ | netbios-ssn | NETBIOS Session Service |
| 143 | ✔ | ✔ | imap | Internet Message Access Protocol für E-Mail-Kommunikation |
| 161 | | ✔ | snmp | Simple Network Management Protocol |
| 162 | ✔ | ✔ | snmptrap | Simple Network Management Protocol Trap |
| 177 | ✔ | ✔ | xdmcp | X Display Manager |
| 179 | ✔ | | bgp | Border Gateway Protocol |
| 194 | ✔ | ✔ | irc | Internet Relay Chat |
| 199 | ✔ | ✔ | smux | SNMP UNIX Multiplexer |
| 201 | ✔ | ✔ | at-rtmp | AppleTalk Routing |
| 209 | ✔ | ✔ | qmtp | Quick Mail Transfer Protocol |
| 210 | ✔ | ✔ | z39.50 | Bibliographisches Informationssystem |
| 213 | ✔ | ✔ | ipx | Internetwork Packet Exchange |
| 220 | ✔ | ✔ | imap3 | IMAP v3 für die E-Mail-Kommunikation |
| 369 | ✔ | ✔ | rpc2portmap | Coda Filesystem Portmapper |
| 370 | ✔ | ✔ | codaauth2 | Coda Filesystem Authentication Service |
| 389 | ✔ | ✔ | ldap | Lightweight Directory Access Protocol |
| 427 | ✔ | ✔ | svrloc | Service Location Protocol |
| 443 | ✔ | | https | HTTPS (HTTP über SSL/TLS) |
| 444 | ✔ | ✔ | snpp | Simple Network Paging Protocol |
| 445 | ✔ | | microsoft-ds | SMB über TCP/IP |
| 464 | ✔ | ✔ | kpasswd | Passwortänderung für Kerberos |
| 500 | | ✔ | isakmp | Sicherheitsprotokoll |
| 512 | ✔ | | exec | Remote Process Execution |
| 512 | | ✔ | comsat/biff | Mail-Client und -Server |
| 513 | ✔ | | login | Anmeldung an Remote-Computer |
| 513 | | ✔ | who | Whod User Logging Daemon |
| 514 | ✔ | | shell | Remote Shell |
| 514 | | ✔ | syslog | Unix System Logging Service |
| 515 | ✔ | | printer | Line Printer Daemon-Druckservices |
| 517 | | ✔ | talk | Talk Remote Calling |
| 518 | | ✔ | ntalk | Network Talk |
| 520 | ✔ | | efs | Extended Filename Server |
| 520 | | ✔ | router | Routing Information Protocol |
| 521 | | ✔ | ripng | Routing Information Protocol für IPv6 |
| 525 | | ✔ | timed | Zeitserver |
| 530 | ✔ | ✔ | courier | Courier Remote Procedure Call |
| 531 | ✔ | ✔ | conference | Chat über AIM und IRC |
| 532 | ✔ | | netnews | Netnews Newsgroup Service |
| 533 | | ✔ | netwall | Notfall-Broadcasts |
| 540 | ✔ | | uucp | Unix-to-Unix Copy Protocol |
| 543 | ✔ | | klogin | Kerberos v5 Remote Login |
| 544 | ✔ | | kshell | Kerberos v5 Remote Shell |
| 546 | ✔ | ✔ | dhcpv6-client | DHCP v6 Client |
| 547 | ✔ | ✔ | dhcpv6-server | DHCP v6 Server |
| 548 | ✔ | | afpovertcp | Apple Filing Protocol über TCP |
| 554 | ✔ | ✔ | rtsp | Steuerung von Streams |
| 556 | ✔ | | remotefs | Remote Filesystem |
| 563 | ✔ | ✔ | nntps | NNTP über SSL/TLS |
| 587 | ✔ | | submission | Message Submission Agent |
| 631 | ✔ | ✔ | ipp | Internet Printing Protocol |
| 631 | ✔ | ✔ | | Common Unix Printing System (inoffiziell) |
| 636 | ✔ | ✔ | ldaps | LDAP über SSL/TLS |
| 674 | ✔ | | acap | Application Configuration Access Protocol |
| 694 | ✔ | ✔ | ha-cluster | Heartbeat-Service |
| 749 | ✔ | ✔ | kerberos-adm | Kerberos v5 Administration |
| 750 | | ✔ | kerberos-iv | Kerberos v4 Services |
| 873 | ✔ | | rsync | rsync Dateitransfer-Services |
| 992 | ✔ | ✔ | telnets | Telnet über SSL/TLS |
| 993 | ✔ | | imaps | IMAP über SSL/TLS |
| 995 | ✔ | | pop3s | POP3 über SSL/TLS |
