Weiterentwicklung
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33
client/get_cert_and_connect.sh.old
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33
client/get_cert_and_connect.sh.old
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#!/bin/bash
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set -e
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# Konfiguration
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CA_HOST="100.87.87.5" # Hostname oder IP der CA-VM
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CA_USER="alf" # Nutzer auf CA-VM
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CA_PORT=22 # Port SSH-Zugang CA
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CA_TARGET=2222 # Port SSH-Zugang Ziel-VM
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REMOTE_SIGN_SCRIPT="/home/alf/remote_sign.sh"
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TARGET_HOST="100.87.87.80" # Zielsystem (Rechner 2)
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SSH_USER="alf" # Ziel-Login-Benutzer
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KEY_DIR="./temp_keys"
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KEY_NAME="temp_user_key"
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VALIDITY=300 # 5 Minuten
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mkdir -p "$KEY_DIR"
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cd "$KEY_DIR"
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# 1. Temporären Key erzeugen
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ssh-keygen -f "$KEY_NAME" -N "" -C "$SSH_USER@temp" > /dev/null
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# 2. Public Key zur CA kopieren
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scp -P "$CA_PORT" "${KEY_NAME}.pub" "${CA_USER}@${CA_HOST}:/tmp/"
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# 3. Signaturprozess auf CA anstoßen
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ssh -p "$CA_PORT" "${CA_USER}@${CA_HOST}" \
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"$REMOTE_SIGN_SCRIPT /tmp/${KEY_NAME}.pub $SSH_USER $VALIDITY"
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# 4. Zertifikat zurückholen
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scp -P "$CA_PORT" "${CA_USER}@${CA_HOST}:/tmp/${KEY_NAME}-cert.pub" .
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# 5. Verbindung aufbauen zum Zielsystem über alternativen Port
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ssh -p "$CA_TARGET" -i "$KEY_NAME" "$SSH_USER@$TARGET_HOST"
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