Thanks Eric.
That it' s possible is good to know, but sadly not very helpful to the great majority of users. We purchase UTM products in order to avoid having to invent our own Snort rules and otherwise spend time developing and exercising highly technical skills. (I' ve been working in this field for fifteen years; I *can* do these things; I don' t have time to).
That FortiNet hasn' t included this, as a built-in option even if not enabled by default, is disappointing.
Systems have, for decades now, had the ability to automatically block repeated failed login attempts. (5 tries to login with that user ID and password, and then block the account for a few minutes).
That FortiOS in its current age and maturity still doesn' t have this built in seems to be a significant failure on FortiNet' s part.