Root being locked when SSH on and open to internet

I got tired of using sneakernet with flash drives with a buddy at work, so I made him an account on my Freenas, and opened SSH on the firewall to the Freenas. Everything worked great until the next time I went to log onto the Freenas webgui. Naturally the root account was locked out due to the FOUR BAJILLION root login attempts. Went to keyboard at the Freenas and reset password, so no biggy.

I'm not really worried about security as we are using like 40 characters for all the passwords...

Root being locked when SSH on and open to internet