VNC Server is connected to ssh server via LAN ssh client is connected to ssh server via ssh over unsecured network. Below diagram depicts the SSH server and the application servers are on different machine and connected on network and the client machine is accessing the SSH server via internet. The SSH server and the destination server can be on the same machine or on different machines accessible via network. Destination server offering services (http, vnc, etc.).SSH client to forward traffic from a local listening port, through the SSH server, to the application server.SSH server listening for SSH connections, (X11Forwarding must be enabled, you can check it in sshd config file).This means that the application data traffic is directed to flow inside an encrypted SSH connection so that it cannot be eavesdropped or intercepted while it is in transit. It also provides a way to secure the data traffic of any given application using port forwarding, basically tunneling any TCP/IP port over SSH. It can be used for numerous reasons mainly to add encryption to legacy applications, to be used as virtual private network and access intranet services across firewalls. SSH tunneling is a method of transporting arbitrary networking data over an encrypted SSH connection. Secure Shell provides strong password authentication and public key authentication, as well as encrypted data communications between two computers connecting over an open network, such as the internet. SSH, also known as Secure Shell or Secure Socket Shell, is a network protocol that gives users, particularly system administrators, a secure way to access a computer over an unsecured network.
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March 2023
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