The network device must automatically lock the account until the locked account is released by an administrator when three unsuccessful login attempts in 15 minutes are exceeded.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-55069	SRG-APP-000345-NDM-000290	SV-69315r1_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. Limits are imposed by locking the account.

STIG	Date
Network Device Management Security Requirements Guide	2018-07-02

Details

Check Text ( C-55691r1_chk )
Determine if the network device automatically locks the account until the locked account is released by an administrator when three unsuccessful login attempts in 15 minutes are exceeded. This requirement may be verified by demonstration or configuration review. This requirement may be met through use of a properly configured authentication server if the device is configured to use the authentication server. If an account is not automatically locked out until the locked account is released by an administrator when three unsuccessful login attempts in 15 minutes are exceeded, this is a finding.

Check Text ( C-55691r1_chk )

Determine if the network device automatically locks the account until the locked account is released by an administrator when three unsuccessful login attempts in 15 minutes are exceeded.

This requirement may be verified by demonstration or configuration review. This requirement may be met through use of a properly configured authentication server if the device is configured to use the authentication server.

If an account is not automatically locked out until the locked account is released by an administrator when three unsuccessful login attempts in 15 minutes are exceeded, this is a finding.

Fix Text (F-59935r1_fix)
Configure the network device or its associated authentication server to automatically lock the account until the locked account is released by an administrator when three unsuccessful login attempts in 15 minutes are exceeded.