Firewalls protect against remote logins by users.

Hello there! An answer that would work would be "Firewalls protect against remote logins by unauthorized users."

Firewalls work as security, and by blocking out unauthorized users, you can avoid dangers like being hacked, or having your personal data stolen or compromised. Like, for example, if you sign up for a Target account and save your credit card number into your account details, Target's firewall will protect  your credit card from hackers getting it.

Hope this helps, have a  great day!

storage maybe?

are there options?