Dienste/Secure Shell aktualisiert

Dienste%2FSecure-Shell.md

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-# Secure Shell (SSH)
+# Secure Shell (SSH)
+
+- [RFC 4250 - The Secure Shell (SSH) Protocol Assigned Numbers](https://tools.ietf.org/html/rfc4250)
+- [RFC 4251 - The Secure Shell (SSH) Protocol Architecture](https://tools.ietf.org/html/rfc4251)
+- [RFC 4252 - The Secure Shell (SSH) Authentication Protocol](https://tools.ietf.org/html/rfc4252)
+- [RFC 4253 - The Secure Shell (SSH) Transport Layer Protocol](https://tools.ietf.org/html/rfc4253)
+- [RFC 4254 - The Secure Shell (SSH) Channel Protocol](https://tools.ietf.org/html/rfc4254)
+- [RFC 4419 - Diffie-Hellman Group Exchange for the Secure Shell (SSH) Protocol](https://tools.ietf.org/html/rfc4419)
+- [RFC 6187 - The Secure Shell (SSH) Transport Layer Protocol: Cipher Block Chaining (CBC) Mode](https://tools.ietf.org/html/rfc6187)
+- [RFC 8332 - The Secure Shell (SSH) Protocol Assigned Numbers - Update](https://tools.ietf.org/html/rfc8332)
+
+
+## Authentizierung
+
+```mermaid
+sequenceDiagram
+participant C as Lokaler Client
+participant S as Externer Server
+C-->>S: KEXINIT - Schlüssel Austausch Initialisierung
+S-->>C: KEXINIT - Schlüssel Austausch Initialisierung
+C-->>S: KEXDH_INIT - Diffie-Hellman Schlüssel Austausch Initialisierung
+S-->>C: KEXDH_REPLY - Antwort auf Diffie-Hellman Initialisierung
+C-->>S: KEXECDH_REPLY - Ephemeral Diffie-Hellman Antwort
+S-->>C: KEXDH_GEX_GROUP - Gruppeninformation für Diffie-Hellman
+C-->>S: KEXDH_GEX_INIT - Diffie-Hellman-Parameter Initiierung
+S-->>C: KEXDH_GEX_REPLY - Diffie-Hellman Parameter Antwort
+C-->>S: USERAUTH_REQUEST - Benutzer Authentifizierungsanforderung
+S-->>C: USERAUTH_FAILURE - Fehlerantwort für Authentifizierung
+C-->>S: USERAUTH_SUCCESS - Authentifizierung erfolgreich
+```