The Arista network device must be configured to enforce the limit of three consecutive invalid logon attempts, after which time it must block any login attempt for 15 minutes.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-255949	ARST-ND-000120	SV-255949r882189_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
Arista MLS EOS 4.2x NDM Security Technical Implementation Guide	2023-01-11

Details

Check Text ( C-59625r882187_chk )
Verify the Arista device is configured to enforce the limit of three consecutive invalid logon attempts with the following command: switch#show running-config | section aaa aaa authentication policy lockout failure 3 duration 900 If the Arista device is not configured to enforce the limit of three consecutive invalid logon attempts, this is a finding.

Fix Text (F-59568r882188_fix)
Configure the account lockout policy using the following commands: switch(config)#aaa authentication policy lockout failure 3 switch(config)#duration 900 switch(config)#exit