====== Using SSH to Access the jPC from Another Device ======

As with most Linux systems you can securely access to the jPC form another device using Secure Shell (SSH).

===== Enabling the SSH Daemon =====

The SSH daemon (i.e. server) is masked by default.  To enable it run the following commands:

<code Bash>
sudo systemctl unmask ssh.socket ssh.service
sudo systemctl enable ssh.socket ssh.service
sudo systemctl start ssh.socket ssh.service
</code>


===== Passwordless SSH Login =====

[[https://wiki.debian.org/Setup%20SSH%20Passwordless%20Login|Setup passwordless SSH login]] to avoid having to type in a password every time you open an SSH session.  This is also typically required for remote deployment and debugging from a development PC.

  - On your remote device, generate a key pair <code>ssh-keygen -t rsa</code>  The key pair will likely be stored in your user profile's home directory (i.e. ''$HOME/.ssh'' or on Windows ''C:\Users\{Username}\.ssh'').
  - Copy the public key to the jPC panel PC. Don't miss the trailing colon. <code>scp $HOME/.ssh/id_rsa.pub admin@{jpc_ip_address}:</code>
  - Register the public key as an authorized key on the jPC.  On the jPC, run <code>mkdir .ssh && cat id_rsa.pub >> .ssh/authorized_keys</code>
  - The next time you start an SSH session from your remote device, you should not be asked to authenticate with a password.

{{ https://downloads.comfiletech.com/jPC/videos/jpc_passwordless_setup.mp4?872x856 }}

===== Transferring Files to and from the jPC =====

==== Use a Terminal Console ====

Files can be transferred to and from the jPC using any device with the [[https://man.openbsd.org/scp|scp]] (i.e. Secure Copy) command installed.  It should be in stalled by default on most Windows 10 and Windows 11 PCs.

To transfer a file from your remote device to the jPC, run <code>scp {path_to_source_on_remote_device} admin@{jpc_ip_address}:{path_to_destination_on_jPC}</code>

To transfer a file from the jPC to your remote device, run <code>scp admin@{jpc_ip_address}:{path_to_source_on_jPC} {path_to_destination_on_remote_device}</code>

Use the ''-r'' switch for recursive copies.  scp also supports wildcards (.e.g. ''*.xml'') for selecting files matching a pattern.

==== Using a GUI ====

If you prefer to use a GUI, consider using the [[https://filezilla-project.org/|FileZilla client]].


{{ https://downloads.comfiletech.com/jPC/videos/jpc-filezilla-copy.mp4?880x796 }}