HEIDENHAIN TNC 620 User Manual page 421

HEROS functions | User administration
Concept of transmission through an SSH tunnel
Prerequisites:
TCP/IP network
The remote computer acts as SSH client
The control acts as SSH server
Key pair consisting of
Private key
Public key
An SSH connection is always set up between an SSH client and an
SSH server.
A key pair is used to protect the connection. This key pair is
generated on the client. The key pair consists of a private key and
a public key. The private key remains with the client. During setup,
the public key is transferred to the server and assigned to a certain
user.
The client tries to connect to the server using the pre-defined
user name. The server can use the public key to verify that the
requester of the connection holds the associated private key. If
yes, the server accepts the SSH connection and assigns it to the
user that has been used for the login. Communication can then be
"tunneled" through this SSH connection.
external PC
DNC tools
mastercomputer@MYTNC640
private
key
HEIDENHAIN | TNC 620 | User's Manual for Setup, Testing and Running NC Programs | 10/2018
ssh
public
key
HEIDENHAIN control system "MYTNC640"
sshd
mastercomputer
rights
public
key
10
DNC
421