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V-223878

CAT II (Medium)

The CA-TSS NPPTHRESH Control Option must be properly set.

Rule ID

SV-223878r958388_rule

STIG

IBM z/OS TSS Security Technical Implementation Guide

Version

V9R8

CCIs

CCI-000044

Discussion

By limiting the number of failed logon attempts, the risk of unauthorized system access via user password guessing, otherwise known as brute-force attacks, is reduced. Limits are imposed by locking the account.

Check Content

From the ISPF Command Shell enter:
TSS MODIFY STATUS

If the NPPTHRESH Control Option value is not set to NPWRTHRESH(02), this is a finding.

Fix Text

Evaluate the impact associated with implementation of the control option. Develop a plan of action to implement the control option setting as specified following and proceed with the change.

NPPTHRESH(02)