friend or foe

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How Difficult Is This to Implement? SSH keys are very easy to set up and are the recommended way to log into any Linux or Unix server environment remotely. A pair of SSH keys can be generated on your machine and you can transfer the public key to your servers within a few minutes. To learn about how to set up keys, follow this guide. If you still feel that you need password authentication, consider implementing a solution like fail2ban on your servers to limit password guesses. Firewalls A firewall is a piece of software (or hardware) that controls what services are exposed to the network. This means blocking or restricting access to every port except for those that should be publicly available.

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