OpenVAS
-http://www.openvas.org
IISCrypto on windows servers
-https://www.nartac.com/Products/IISCrypto
IISLockdown
-https://support.microsoft.com/en-us/help/325864/how-to-install-and-use-t...
NMap/ZenMap
-https://nmap.org/zenmap/
Reputation Monitor alert:
-https://www.alienvault.com/open-threat-exchange/reputation-monitor
Nikto - web server vuln scanner (linux):
-https://cirt.net/Nikto2
Windows File server auditor (free community edition):
https://www.netwrix.com/