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← Back to Fortinet FortiGate Firewall NDM Security Technical Implementation Guide

V-234221

CAT II (Medium)

The FortiGate device must require that when a password is changed, the characters are changed in at least eight of the positions within the password.

Rule ID

SV-234221r1153456_rule

STIG

Fortinet FortiGate Firewall NDM Security Technical Implementation Guide

Version

V1R5

CCIs

CCI-000195

Discussion

If the application allows the user to consecutively reuse extensive portions of passwords, this increases the chances of password compromise by increasing the window of opportunity for attempts at guessing and brute-force attacks. The number of changed characters refers to the number of changes required with respect to the total number of positions in the current password. In other words, characters may be the same within the two passwords; however, the positions of the like characters must be different. Multifactor authentication (MFA) is required for all administrative and user accounts on network devices, except for an account of last resort and (where applicable) a root account. Passwords should only be used when MFA using PKI is not available, and for the account of last resort and root account.

Check Content

Log in to the FortiGate GUI with Super-Admin privilege.

1. Open a CLI console, via SSH or available from the GUI.
2. Run the following command:
     # show full-configuration system password-policy | grep -i change
    The output should be:
      # set change-8-characters enable

If the change-8-characters parameter is set to disable, this is a finding.

Fix Text

Log in to the FortiGate GUI with Super-Admin privilege.

1. Open a CLI console, via SSH or available from the GUI.
2. Run the following command:
     # config system password-policy
           # set change-8-characters enable
     # end