The Arista network device must limit the number of concurrent sessions to an organization-defined number for each administrator account and/or administrator account type.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-255947	ARST-ND-000010	SV-255947r960735_rule	CCI-000054	medium
Description
Device management includes the ability to control the number of administrators and management sessions that manage a device. Limiting the number of allowed administrators and sessions per administrator based on account type, role, or access type is helpful in limiting risks related to denial-of-service (DoS) attacks. This requirement addresses concurrent sessions for administrative accounts and does not address concurrent sessions by a single administrator via multiple administrative accounts. The maximum number of concurrent sessions must be defined based upon mission needs and the operational environment for each system. At a minimum, limits must be set for SSH, HTTPS, account of last resort, and root account sessions.
STIG			Date
Arista MLS EOS 4.X NDM Security Technical Implementation Guide			2025-02-20

Details

Check Text (C-255947r960735_chk)

Verify the device is configured to limit the number of concurrent management sessions with the following commands: switch#sh run | section management ssh management ssh connection limit 5 ! If the Arista network device is not configured to limit the number of SSH concurrent sessions, this is a finding.

Fix Text (F-59566r882182_fix)

Configure the switch to limit SSH concurrent connections to the device with the following commands: switch#configure switch(config)#management ssh switch(config-mgmt-ssh)#connection limit 5 switch(config-mgmt-ssh)#exit switch#wr !