We suggest you using SSH dynamic port forwarding for a secure access.
Please establish an SSH session to your file server in one of the ways specified below (depending on your SSH client), and navigate to the following URL in your web browser: http://localhost:9091
In the case of PuTTy:
1. Enter the following settings in the SSH -> Tunnels section of PuTTy Configuration window and click "Add":
Source port: 9091
Destination: 127.0.0.1:9091
2. Navigate to the Session Tab, enter your main server's info and connect
In the case of OpenSSH client:
Use the following command to connect your file server:
ssh root@your_main_server_ip -L 9091:127.0.0.1:9091