I recently setup an FTP server and exposed it using a Server Publishing Rule. I was able to log in without any problems for a few days, but now whenever I log in (from any ip address), I get the following message:
530 Brute Force Attack, your IP has been looked, and futher access is not allowed.
If I disable, then re-enable the server rule, the FTP server works again.
Any thoughts about what this means and what I can do about it? What does "looked" mean?