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deb11:backuppc [2024/03/17 13:36] – [Configuration for Windows 11 running WSL2 or Hosts without fixed IP address] Bernard Condraudeb11:backuppc [2025/09/14 11:56] (current) – [Configuration for Windows 11 running WSL2 or Hosts without fixed IP address] Bernard Condrau
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 %sudo ALL=(ALL:ALL) ALL %sudo ALL=(ALL:ALL) ALL
 backuppc ALL=(root:root) NOPASSWD: /usr/bin/rsync</code> backuppc ALL=(root:root) NOPASSWD: /usr/bin/rsync</code>
 +  - If it's a new machine you are connecting make sure the public key of the host is added to the server and you have connected manually from server to host to add to the ''known_hosts'' file<code></code>
   - Test rsync access as root with the following command from user ''backuppc'' on the BackupPC Server:<code>ssh <host> -p <port> sudo rsync --version</code>   - Test rsync access as root with the following command from user ''backuppc'' on the BackupPC Server:<code>ssh <host> -p <port> sudo rsync --version</code>
 +  - For Windows: start the following program as a task after user login in ''Task Scheduler'':<code>C:\Users\<user>\AppData\Local\Microsoft\WindowsApps\bash.exe -c "sudo /etc/init.d/ssh start"</code>
   * [[https://superuser.com/questions/1481318/allowing-automatic-command-execution-as-root-on-linux-using-ssh#answer-1483701|Allowing automatic command execution as root on Linux using SSH]]   * [[https://superuser.com/questions/1481318/allowing-automatic-command-execution-as-root-on-linux-using-ssh#answer-1483701|Allowing automatic command execution as root on Linux using SSH]]
   * [[https://man.openbsd.org/OpenBSD-current/man8/sshd.8#AUTHORIZED_KEYS_FILE_FORMAT|authorized_keys]]   * [[https://man.openbsd.org/OpenBSD-current/man8/sshd.8#AUTHORIZED_KEYS_FILE_FORMAT|authorized_keys]]
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   - Use ''autossh'' instead of ''ssh'' to reestablish the ssh connection if it drops - add the following options in the server's ''sshd_config'' to have ssh drop the connection if unresponsive<code>ClientAliveInterval 60   - Use ''autossh'' instead of ''ssh'' to reestablish the ssh connection if it drops - add the following options in the server's ''sshd_config'' to have ssh drop the connection if unresponsive<code>ClientAliveInterval 60
 ClientAliveCountMax 10</code> ClientAliveCountMax 10</code>
 +  - If it's a new machine you are connecting make sure the public keys are exchanged on host and server and you have connected manually from each side to add both to the ''known_hosts'' file<code></code>
   - Test rsync access as root with the following command from user ''backuppc'' on the BackupPC Server:<code>ssh localhost -p <reverse_port> sudo rsync --version</code>   - Test rsync access as root with the following command from user ''backuppc'' on the BackupPC Server:<code>ssh localhost -p <reverse_port> sudo rsync --version</code>
-  - For Windows: start the following programs as a task after user login in ''Task Scheduler'':<code>C:\Users\<user>\AppData\Local\Microsoft\WindowsApps\bash.exe -c "sudo /etc/init.d/ssh start" +  - For Windows: start the following programs as a task after user login in ''Task Scheduler'' (sleep 1 second is required to give ''autossh'' time to drop into background before the shell is terminated):<code>C:\Users\<user>\AppData\Local\Microsoft\WindowsApps\bash.exe -c "sudo /etc/init.d/ssh start" 
-C:\Users\<user>\AppData\Local\Microsoft\WindowsApps\bash.exe -c "autossh -M <base_port> -N -f -R <reverse_port>:localhost:<ssh_port> host.domain.tld -p <port> && sleep 1"</code>+C:\Users\<user>\AppData\Local\Microsoft\WindowsApps\bash.exe -c "autossh -M 0 -f -N -R <reverse_port>:localhost:<ssh_port> host.domain.tld -p <wan_port> && sleep 1"</code>
   - Note that these commands work if WSL was installed as Windows feature (e.g. WSL2, Windows 11) and Debian through the Microsoft Store, otherwise you need to find the location of ''bash.exe''. In addition you need to allow <user> to execute ''/etc/init.d/ssh'' as root without password.<code></code>   - Note that these commands work if WSL was installed as Windows feature (e.g. WSL2, Windows 11) and Debian through the Microsoft Store, otherwise you need to find the location of ''bash.exe''. In addition you need to allow <user> to execute ''/etc/init.d/ssh'' as root without password.<code></code>
   - The BackupPC host config file needs to backup ''localhost'' on port <reverse_port>.   - The BackupPC host config file needs to backup ''localhost'' on port <reverse_port>.
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 === Reverse Ports === === Reverse Ports ===
   * Hera: 60022   * Hera: 60022
-  * Vulcan: 60122+  * Vulcan: 60322 
 +  * Heracles: 60422
   * Cassandra: 60522   * Cassandra: 60522
  
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   * [[https://serverfault.com/questions/534229/autossh-in-background-does-not-work#answer-972141|autossh in background]]   * [[https://serverfault.com/questions/534229/autossh-in-background-does-not-work#answer-972141|autossh in background]]
   * [[https://superuser.com/questions/1756597/remotely-access-pc-behind-firewall-from-my-dynamic-ip-pc-via-a-static-ip-vps#answers|Remotely access pc behind firewall from my dynamic-ip pc via a static-ip VPS]]   * [[https://superuser.com/questions/1756597/remotely-access-pc-behind-firewall-from-my-dynamic-ip-pc-via-a-static-ip-vps#answers|Remotely access pc behind firewall from my dynamic-ip pc via a static-ip VPS]]
 +  * [[deb11:autossh_public|Public explanation]]
  
 ==== Configuration on Synology DSM6 Hosts ==== ==== Configuration on Synology DSM6 Hosts ====
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   * [[https://kifarunix.com/backup-windows-system-with-backuppc-using-rsyncd/|Backup Windows System with BackupPC Using Rsyncd]]   * [[https://kifarunix.com/backup-windows-system-with-backuppc-using-rsyncd/|Backup Windows System with BackupPC Using Rsyncd]]
   * [[https://github.com/backuppc/cygwin-rsyncd|cygwin-rsyncd: Rsyncd for Cygwin]]   * [[https://github.com/backuppc/cygwin-rsyncd|cygwin-rsyncd: Rsyncd for Cygwin]]
 +  * [[https://www.systemajik.com/setting-up-backuppc-on-windows/|Setting Up BackupPC on Windows (rsyncd)]]
   * [[http://no-sheds.blogspot.com/2017/05/setting-up-windows-backuppc-client.html|Setting up a Windows Backuppc Client using Rsync/Cygwin]]   * [[http://no-sheds.blogspot.com/2017/05/setting-up-windows-backuppc-client.html|Setting up a Windows Backuppc Client using Rsync/Cygwin]]
   * [[https://winscp.net/eng/docs/guide_windows_openssh_server|Installing SFTP/SSH Server on Windows using OpenSSH]]   * [[https://winscp.net/eng/docs/guide_windows_openssh_server|Installing SFTP/SSH Server on Windows using OpenSSH]]

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