original: Kerberos protocol messages are protected against eavesdropping and replay attacks.
simplifications: Kerberos protocol messages are protected against listening and replay attacks. Kerberos protocol messages are protected against attacks. Kerberos protocol messages can't be replayed or eavesdropped. This is because of protection. Kerberos protocol messages are safe from eavesdropping and replay attacks. Kerberos protocol messages are protected against people listening and replay attacks. Kerberos protocol messages are protected against attempts to spy. Kerberos protocol messages protect from eavesdropping and replay attacks. Kerberos protocol keeps messages safe against listening in and replays. Kerberos protocol messages are protected from eavesdropping and replay attacks. Messages from the Kerberos protocol are keep safe against spying and replay attacks.