Check: CISC-ND-000010
Cisco IOS XR Router NDM STIG:
CISC-ND-000010
(in versions v2 r5 through v1 r1)
Title
The Cisco router must be configured to limit the number of concurrent management sessions to an organization-defined number. (Cat II impact)
Discussion
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 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 should 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.
Check Content
Note: This requirement is not applicable to file transfer actions such as FTP, SCP and SFTP. Review the router configuration to determine if concurrent management sessions are limited as show in the example below: ssh server session-limit 2 If the router is not configured to limit the number of concurrent management sessions, this is a finding.
Fix Text
Configure the router to limit the number of concurrent management sessions to an organization-defined number as shown in the example below. RP/0/0/CPU0:R3(config)#ssh server session-limit 2
Additional Identifiers
Rule ID: SV-216522r879511_rule
Vulnerability ID: V-216522
Group Title: SRG-APP-000001-NDM-000200
Expert Comments
CCIs
Number | Definition |
---|---|
CCI-000054 |
The information system limits the number of concurrent sessions for each organization-defined account and/or account type to an organization-defined number of sessions. |
Controls
Number | Title |
---|---|
AC-10 |
Concurrent Session Control |