As agreed, we would like you to harden our Elastix server as follows with your help (I have added a small item at the bottom, as I would like to know what you did finally):
- remove ability to log in directly (only certificate-based login via SSH)
- block all other traffic (FTP, etc.)
- block attempts after too many fails for SSH, login panels of ...
Skills: apache administration, elastix, linux system administration, mysql administration, openfire