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- Minimal installation (no prior SSH hardening, UFW, or Fail2Ban configured). - Minimal installation (no prior SSH hardening, UFW, or Fail2Ban configured).
- **Script Version**: v0.52 - **Script Version**: v0.52
- **Execution Mode**: Interactive (not `--quiet`), to capture user prompts and verify decision points. - **Execution Mode**: Interactive (not `--quiet`), to capture user prompts and verify decision points.
- **Inputs**: I’ll provide sample inputs for prompts (e.g., username, hostname, SSH port) to simulate a realistic run.
- **Verification**: I’ll check each function’s logic, validate outputs against the README, and highlight any potential runtime errors or edge cases.
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- **Log File Creation**: - **Log File Creation**:
- The script creates `/var/log/du_setup_$(date +%Y%m%d_%H%M%S).log` (e.g., `/var/log/du_setup_20250630_222800.log`) with `chmod 600`. - The script creates `/var/log/du_setup_$(date +%Y%m%d_%H%M%S).log` (e.g., `/var/log/du_setup_20250630_222800.log`) with `chmod 600`.
- Backup directory `/root/setup_harden_backup_20250630_222800` is created with `chmod 700`. - Backup directory `/root/setup_harden_backup_20250630_222800` is created with `chmod 700`.\c
#### **2. Main Function Execution** #### **2. Main Function Execution**
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``` ```
✓ Tailscale connected successfully. Node IPv4 in tailnet: 100.64.0.1 ✓ Tailscale connected successfully. Node IPv4 in tailnet: 100.64.0.1
``` ```
- **Potential Issues**: Invalid key or network issues are logged to `/tmp/tailscale_status.txt`. Retries (3x) mitigate transient failures. Assumed success for simulation. - **Potential Issues**: Invalid key or network issues are logged to `/tmp/tailscale_status.txt`. Retries (3x) mitigate transient failures.
##### **setup_backup** ##### **setup_backup**
- **Logic**: Configures rsync backups over SSH with optional notifications and a test backup. - **Logic**: Configures rsync backups over SSH with optional notifications and a test backup.
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Reboot now? [Y/n]: n Reboot now? [Y/n]: n
⚠ Please reboot manually with 'sudo reboot'. ⚠ Please reboot manually with 'sudo reboot'.
``` ```
- **Potential Issues**: If services fail, they’re listed in `FAILED_SERVICES`. Backup key copy warning is appropriate for manual mode. No issues expected. - **Potential Issues**: If services fail, they’re listed in `FAILED_SERVICES`. Backup key copy warning for manual mode. No issues expected.
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