Securing the gateway: Why SSH 2FA is essential

The article explains that a replay attack involves a malicious actor capturing and re-sending valid authentication data to gain unauthorized access. To prevent these attacks, ADSelfService Plus recommends implementing time-based one-time passwords (TOTP) and utilizing features like device fingerprinting and geolocation to verify legitimate login attempts, effectively making captured credentials useless. This layered approach strengthens security beyond just username and password.