๐ ๐๐ฟ๐ผ๐บ ๐๐ต๐ฒ ๐๐ถ๐ฒ๐น๐ฑ โ Real-World Findings from Security Assessments
๐ฅ ๐ฐ๐ฎ.๐ต%ย of infrastructures Iโve assessed ๐ฟ๐๐ป๐ ๐บ๐๐น๐๐ถ๐ฝ๐น๐ฒ ๐ฟ๐ผ๐น๐ฒ๐/๐๐ฒ๐ฟ๐๐ถ๐ฐ๐ฒ๐ ๐ผ๐ป ๐๐ต๐ฒ๐ถ๐ฟ ๐ฑ๐ผ๐บ๐ฎ๐ถ๐ป ๐ฐ๐ผ๐ป๐๐ฟ๐ผ๐น๐น๐ฒ๐ฟ๐
๐ซ ๐ง๐ต๐ถ๐ ๐ถ๐ ๐ณ๐ฎ๐ฟ ๐๐ผ๐ผ ๐ฐ๐ผ๐บ๐บ๐ผ๐ป โ especially in smaller environments โ but itโs one of the fastest ways to weaken your security posture. Domain Controllers should normally host only two services:
โ ย Active Directory Domain Services
โ ย DNS
Nothing more.
๐ช๐ต๐?
Because every extra service:
โช๏ธ adds ports
โช๏ธ increases theย attack surface
โช๏ธ introduces more vulnerabilities
And it turns your DC into a much larger target than it already is (โข๏ธ). If youโve ever had to configure firewall openings for domain controllers, you know the list is already long enough. If not, hereโs a reference:
โช๏ธ https://lnkd.in/epgnjNeJ
โ ๐๐ผ๐ป๐๐ ๐๐ถ๐ฝ:ย You can restrict many AD-related RPC services from the dynamic port range (yes โ network admins will thank you). Microsoft provides guidance here:
โช๏ธ https://lnkd.in/ehX-PEG5
โช๏ธ https://lnkd.in/eegj6y4M
๐๐ป๐ผ๐๐ต๐ฒ๐ฟ ๐๐ฒ๐ฟ๐ ๐ถ๐บ๐ฝ๐ผ๐ฟ๐๐ฎ๐ป๐ ๐ฟ๐ฒ๐ฎ๐๐ผ๐ป to do so โย Tiering Model.ย Have you ever tried to configure Tiering Model when you are hosting multiple services/roles on just few machines? ๐ง๐ต๐ฎ๐ ๐ถ๐ ๐ฎ ๐ฟ๐ฒ๐ฎ๐น ๐ฝ๐ถ๐ฐ๐ธ๐น๐ฒ…
