Python for Security and Networking - Third Edition by José Manuel Ortega

Author:José Manuel Ortega [José Manuel Ortega]
Language: eng
Format: epub
Publisher: Packt Publishing
Published: 2023-06-07T00:00:00+00:00

If the connection is successful, then it shows information related to the SSH server and the supported encryption algorithms.

One of the most important points to keep in mind is to establish the default policy for locating the host key on the client’s computer. Otherwise, if the host key is not found (usually located in the /.ssh/know_hosts file), Python will throw the following paramiko exception: raise SSHException('Unknown server %s' % hostname) paramiko.SSHException: Unknown server.

paramiko allows the user to be validated both by password and by key pair, making it ideal for authenticating users beyond server policies. When you connect with an SSH server for the first time, if the SSH server keys are not stored on the client side, you will get a warning message saying that the server keys are not cached in the system and will be prompted as to whether you want to accept those keys.

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