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The use of DES encryption suites must not be allowed for Kerberos encryption.


Overview

Finding ID Version Rule ID IA Controls Severity
V-21954 3.154 SV-25277r2_rule Medium
Description
Certain encryption types are no longer considered secure. This setting configures a minimum encryption type for Kerberos, preventing the use of the DES encryption suites.
STIG Date
Windows 7 Security Technical Implementation Guide 2017-01-27

Details

Check Text ( None )
None
Fix Text (F-65547r2_fix)
Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Network Security: Configure encryption types allowed for Kerberos" to "Enabled" with only the following selected:

RC4_HMAC_MD5
AES128_HMAC_SHA1
AES256_HMAC_SHA1
Future encryption types