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RHCSA SSH and Remote Access Configuration Flashcards

6 cards from real RHCSA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

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  1. Which SSH option allows you to log in as a specific user to a remote host?

    Answer: ssh -l username host

    The `-l` flag specifies the remote login name; alternatively, `ssh username@host` achieves the same result.

  2. What `sshd_config` setting limits SSH access to only specific users?

    Answer: AllowUsers

    `AllowUsers` in `sshd_config` accepts a space-separated list of usernames permitted to log in via SSH.

  3. Which port does SSH use by default?

    Answer: 22

    SSH operates on TCP port 22 by default, though this can be changed in `sshd_config` for security.

  4. What directive in `sshd_config` enables or disables password authentication?

    Answer: PasswordAuthentication

    `PasswordAuthentication yes|no` controls whether users can authenticate using a password instead of a key.

  5. Which file on RHEL must be updated to allow the new SSH port through the SELinux policy?

    Answer: semanage port -a -t ssh_port_t -p tcp NEWPORT

    You use `semanage port -a -t ssh_port_t -p tcp ` to add the new port to the SELinux SSH port type policy.

  6. What command verifies the syntax of the SSH server configuration file without restarting the service?

    Answer: sshd -t

    `sshd -t` parses the configuration file and reports syntax errors without starting or restarting the daemon.