\babel@toc {ngerman}{}\relax 
\contentsline {section}{\numberline {1}Server-Absicherung (Ubuntu 24.04 auf Contabo VPS)}{3}{section.1}%
\contentsline {subsection}{\numberline {1.1}Schritt 1: SSH-Verbindung testen}{3}{subsection.1.1}%
\contentsline {subsection}{\numberline {1.2}Schritt 2: System-Updates}{4}{subsection.1.2}%
\contentsline {subsection}{\numberline {1.3}Schritt 3: SSH-Key-Authentifizierung}{4}{subsection.1.3}%
\contentsline {subsection}{\numberline {1.4}Schritt 4: SSH-Client-Konfiguration (Alias)}{5}{subsection.1.4}%
\contentsline {subsection}{\numberline {1.5}Schritt 5: SSH-Timeout auf 20 Minuten}{6}{subsection.1.5}%
\contentsline {subsection}{\numberline {1.6}Schritt 6: Fail2Ban (Bruteforce-Schutz)}{6}{subsection.1.6}%
\contentsline {subsection}{\numberline {1.7}Zusammenfassung}{7}{subsection.1.7}%
\contentsline {section}{\numberline {2}Firewall mit UFW einrichten}{7}{section.2}%
\contentsline {subsection}{\numberline {2.1}Was ist eine Firewall und warum brauchen wir sie?}{8}{subsection.2.1}%
\contentsline {subsection}{\numberline {2.2}Die 65.535 Ports: Ein kurzer Überblick}{8}{subsection.2.2}%
\contentsline {subsection}{\numberline {2.3}Die drei Ports, die wir öffnen}{8}{subsection.2.3}%
\contentsline {subsection}{\numberline {2.4}Warum HTTPS für PWAs Pflicht ist}{8}{subsection.2.4}%
\contentsline {subsection}{\numberline {2.5}Durchführung}{9}{subsection.2.5}%
\contentsline {subsubsection}{\numberline {2.5.1}Standardrichtlinien setzen}{9}{subsubsection.2.5.1}%
\contentsline {subsubsection}{\numberline {2.5.2}Benötigte Ports öffnen}{10}{subsubsection.2.5.2}%
\contentsline {subsubsection}{\numberline {2.5.3}Firewall aktivieren}{10}{subsubsection.2.5.3}%
\contentsline {subsubsection}{\numberline {2.5.4}Konfiguration überprüfen}{11}{subsubsection.2.5.4}%
\contentsline {subsection}{\numberline {2.6}Zusammenfassung}{11}{subsection.2.6}%
\contentsline {section}{\numberline {3}Docker-Images bauen und App deployen}{12}{section.3}%
\contentsline {subsection}{\numberline {3.1}Was ist Docker und warum nutzen wir es?}{12}{subsection.3.1}%
\contentsline {subsection}{\numberline {3.2}Die drei Dockerfiles im Detail}{12}{subsection.3.2}%
\contentsline {subsubsection}{\numberline {3.2.1}Backend-Dockerfile: \texttt {apps/api/Dockerfile}}{12}{subsubsection.3.2.1}%
\contentsline {subsubsection}{\numberline {3.2.2}Frontend-Dockerfile: \texttt {apps/web/Dockerfile}}{13}{subsubsection.3.2.2}%
\contentsline {subsubsection}{\numberline {3.2.3}Nginx-Konfiguration: \texttt {apps/web/nginx.conf}}{14}{subsubsection.3.2.3}%
\contentsline {subsection}{\numberline {3.3}Das Backend: Program.cs im Detail}{15}{subsection.3.3}%
\contentsline {subsection}{\numberline {3.4}Der API-Client: client.ts im Detail}{16}{subsection.3.4}%
\contentsline {subsection}{\numberline {3.5}Das Frontend: App.tsx im Detail}{16}{subsection.3.5}%
\contentsline {subsection}{\numberline {3.6}Images bauen}{17}{subsection.3.6}%
\contentsline {subsection}{\numberline {3.7}Images exportieren und auf den Server kopieren}{18}{subsection.3.7}%
\contentsline {subsection}{\numberline {3.8}Container auf dem Server starten}{18}{subsection.3.8}%
\contentsline {subsection}{\numberline {3.9}Aufgetretene Probleme und Lösungen}{19}{subsection.3.9}%
\contentsline {subsection}{\numberline {3.10}Zusammenfassung}{20}{subsection.3.10}%
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