Securing SSH Server connections on Linux involves implementing a set of best practices that can significantly reduce the risk of unauthorized access or data breaches. Here are some recommendations:

Use Strong Authentication: Utilize public key authentication as it is more secure than passwords. The private key should be protected by a passphrase.

Change the default SSH port: It is a good practice to change the default SSH port from 22 to a different port, as it can deter automated attacks that are scanning for open SSH ports.

Disable Root login: Disable remote root login by setting the "PermitRootLogin" parameter to "no" in the SSH configuration file.

Configure IP Restrictions: Use firewall rules to limit access to SSH to only specific IP addresses or ranges.

Implement Two-Factor Authentication: Implement two-factor authentication to provide an additional layer of security.

Keep SSH Server Updated: Ensure that the SSH server software is updated regularly with security patches and updates.

Monitor SSH access: Monitor the SSH access logs regularly and set up alerts to notify of any suspicious activity.

Use SSH keys with Passphrase: Use SSH keys with a passphrase to protect against unauthorized access to the key.

By implementing these best practices, you can significantly reduce the risk of unauthorized access to your SSH server.

Securing SSH Server connections on Linux involves implementing a set of best practices that can significantly reduce the risk of unauthorized access or data breaches. Here are some recommendations:

Use Strong Authentication: Utilize public key authentication as it is more secure than passwords. The private key should be protected by a passphrase.

Change the default SSH port: It is a good practice to change the default SSH port from 22 to a different port, as it can deter automated attacks that are scanning for open SSH ports.

Disable Root login: Disable remote root login by setting the "PermitRootLogin" parameter to "no" in the SSH configuration file.

Configure IP Restrictions: Use firewall rules to limit access to SSH to only specific IP addresses or ranges.

Implement Two-Factor Authentication: Implement two-factor authentication to provide an additional layer of security.

Keep SSH Server Updated: Ensure that the SSH server software is updated regularly with security patches and updates.

Monitor SSH access: Monitor the SSH access logs regularly and set up alerts to notify of any suspicious activity.

Use SSH keys with Passphrase: Use SSH keys with a passphrase to protect against unauthorized access to the key.

By implementing these best practices, you can significantly reduce the risk of unauthorized access to your SSH server.