Chapter 15 System
to securely connect to the WAN port of the
Figure 94 SSH Communication Over the WAN Example
15.6.1 How SSH Works
The following figure is an example of how a secure connection is established between two remote hosts using SSH v1.
Figure 95 How SSH v1 Works Example
1Host Identification
The SSH client sends a connection request to the SSH server. The server identifies itself with a host key. The client encrypts a randomly generated session key with the host key and server key and sends the result back to the server.
The client automatically saves any new server public keys. In subsequent connections, the server public key is checked against the saved version on the client computer.
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