The Juniper router must be configured to enforce the limit of three consecutive invalid logon attempts after which time lock out the user account from accessing the device for 15 minutes.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-217311	JUNI-ND-000150	SV-217311r395607_rule		Medium

Description
By limiting the number of failed login attempts, the risk of unauthorized system access via user password guessing, otherwise known as brute-forcing, is reduced.

STIG	Date
Juniper Router NDM Security Technical Implementation Guide	2022-09-12

Details

Check Text ( C-18538r296511_chk )
Review the router configuration to verify that it enforces the limit of three consecutive invalid logon attempts after which time it will lockout the user account from accessing the router for 15 minutes as shown in the example below. login { retry-options { tries-before-disconnect 3; lockout-period 15; } If the router is not configured to enforce the limit of three consecutive invalid logon attempts after which time it will lockout the user account from accessing the router for 15 minutes, this is a finding.

Check Text ( C-18538r296511_chk )

Review the router configuration to verify that it enforces the limit of three consecutive invalid logon attempts after which time it will lockout the user account from accessing the router for 15 minutes as shown in the example below.

login {
retry-options {
tries-before-disconnect 3;
lockout-period 15;
}

If the router is not configured to enforce the limit of three consecutive invalid logon attempts after which time it will lockout the user account from accessing the router for 15 minutes, this is a finding.

Fix Text (F-18536r296512_fix)
Configure the router to enforce the limit of three consecutive invalid logon attempts and lock out the user account from accessing the device for 15 minutes as shown in the example below. [edit system login] set retry-options tries-before-disconnect 3 set retry-options lockout-period 15