Well-Known Ports

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AP1

FISI

FIAE

Last updated 11:06 AM on 6/11/26
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61 Terms

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Port 80

HTTP – TCP

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Port 443

HTTPS – TCP/UDP (HTTP/3 via QUIC)

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Port 8080

HTTP alternativ – TCP (Proxy, Tomcat)

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HTTP

Port 80 TCP

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HTTPS

Port 443 TCP/UDP

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Port 20

FTP Daten – TCP

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Port 21

FTP Steuerung – TCP

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FTP Steuerung

Port 21 TCP

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FTP Daten

Port 20 TCP

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Port 22

SSH / SCP / SFTP – TCP

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SSH

Port 22 TCP

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Port 23

Telnet – TCP (unverschlüsselt, veraltet!)

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Port 69

TFTP – UDP (Trivial FTP, oft für PXE-Boot)

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Port 25

SMTP Server-zu-Server – TCP

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SMTP (Server-zu-Server)

Port 25 TCP

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Port 465

SMTPS – TCP (SMTP über TLS, implizit)

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Port 587

SMTP Submission – TCP (Client→Server, STARTTLS)

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SMTP Submission

Port 587 TCP

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Port 110

POP3 – TCP

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POP3

Port 110 TCP

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Port 995

POP3S – TCP

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Port 143

IMAP – TCP

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IMAP

Port 143 TCP

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Port 993

IMAPS – TCP

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IMAPS

Port 993 TCP

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Port 53

DNS – UDP (Standard) / TCP (Zonentransfer, große Antworten)

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DNS

Port 53 UDP (Standard) / TCP (Zonentransfer)

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Port 67

DHCP Server – UDP

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DHCP Server

Port 67 UDP

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Port 68

DHCP Client – UDP

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Port 88

Kerberos – TCP/UDP

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Kerberos

Port 88 TCP/UDP

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Port 389

LDAP – TCP/UDP

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LDAP

Port 389 TCP/UDP

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Port 636

LDAPS – TCP

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Port 445

SMB / CIFS (Windows-Freigaben) – TCP

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SMB

Port 445 TCP

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Port 139

NetBIOS Session (Legacy SMB) – TCP

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Port 3389

RDP (Windows Remote Desktop) – TCP

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RDP

Port 3389 TCP

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Port 5900

VNC – TCP

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Port 123

NTP (Zeitserver) – UDP

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NTP

Port 123 UDP

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Port 161

SNMP – UDP

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Port 162

SNMP Trap – UDP

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Port 514

Syslog – UDP

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Port 1433

Microsoft SQL Server (MSSQL) – TCP

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MSSQL

Port 1433 TCP

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Port 3306

MySQL / MariaDB – TCP

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MySQL

Port 3306 TCP

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Port 5432

PostgreSQL – TCP

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Port 2049

NFS – TCP/UDP

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Port 51820

WireGuard – UDP

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WireGuard

Port 51820 UDP

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Port 1194

OpenVPN – UDP/TCP

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Port 500

IKE (IPsec) – UDP

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Well-Known Ports: welcher Bereich?

0 – 1023 (reserviert für Standard-Dienste, brauchen unter Linux Root)

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Registered Ports: welcher Bereich?

1024 – 49151 (von IANA für bestimmte Apps registriert)

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Ephemeral / Dynamic Ports: welcher Bereich?

49152 – 65535 (Client-Quellports, kurzlebig)

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Was ist ein Socket?

Kombination aus IP-Adresse + Port, z.B. 192.168.1.10:443

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