IMPORTANT: Before following the steps below, ensure that you have enabled the SSH server (disabled by default) and that your application server is running.
To configure the SSH server to support password authentication, follow these steps:
The default credentials to log in to the server (either locally or remotely through SSH) are displayed when the virtual machine console is started up, as shown below:
NOTE: It is strongly recommended to change the default password for security. To change the default login password for the virtual machine console, follow these instructions.
In password-based authentication, after establishing secure connection with remote servers, SSH users usually pass on their usernames and passwords to remote servers for client authentication. These credentials are shared through the secure tunnel established by symmetric encryption.
The SSH server authenticates a client through the AAA mechanism. The password authentication process is as follows: The client sends the server an authentication request that includes the encrypted username and password.
Open the /etc/ssh/sshd_config with a supported editor. To enable the password or key authentication, make sure the related parameter is set to "yes". To enable both, set both of these parameters to "yes". To enable the password authentication, check if the parameter PasswordAuthentication is set to "yes".
Secure socket shell (SSH) is a protocol that allows users to log in to a remote computer. Its acronym also refers to tools and utilities that implement the protocol. A default SSH utility comes preinstalled on all Linux and Macintosh operating systems.
SSH supports two main methods of authentication: passwords and keys. Passwords are easy to use and remember, but they are also vulnerable to brute-force attacks, phishing, and human errors. Keys are more secure and efficient, but they require more setup and management.
Traditional SSH keys are simply made up of a public and private key pair that are used for SSH key-based authentication. SSH certificates, on the other hand, consist of a public key along with additional identity information and access permissions that are signed by a trusted SSH Certificate Authority (CA).
The Password Authentication Protocol (PAP) provides a simple method for the peer to establish its identity using a two-way handshake. After the link is established, an ID and password pair is repeatedly sent by the peer to the authenticator until authentication is acknowledged or the connection is terminated.
SSH passwordless login is an SSH authentication method that employs a pair of public and private keys for asymmetric encryption. The public key resides on the server, and only a client that presents the private key can connect.
From a security standpoint, using SSH-keys to authenticate a user's identity leads to greater protection of your data. Username/password authentication can often lead to security compromises, in particular, brute force attacks by hackers.
Introduction: My name is Trent Wehner, I am a talented, brainy, zealous, light, funny, gleaming, attractive person who loves writing and wants to share my knowledge and understanding with you.
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