Cisco IOS Router NDM STIG Version Comparison

There are 2 differences between versions v3 r1 (July 24, 2024) (the "left" version) and v3 r3 (Jan. 30, 2025) (the "right" version).

Check CISC-ND-000010 was changed between these two versions. Green, underlined text was added, red, struck-out text was removed.

The regular view of the left check and right check may be easier to read.

Title

The Cisco router must be configured to limit the number of concurrent management sessions to an organization-defined number.

Check Content

Note: This requirement is not applicable to file transfer actions such as FTP, SCP SCP, and SFTP. Review the router configuration to determine if concurrent management sessions are limited as show shown in the example below: ip http secure-server ip http max-connections 2 … … … line vty 0 1 transport input ssh line vty 2 4 transport input none If none If the router is not configured to limit the number of concurrent management sessions, this is a finding.

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.

Fix

Configure the router to limit the number of concurrent management sessions to an organization-defined number as shown in the example below. R4(config)#ip http max-connections 2 R4(config)#line vty 0 1 R4(config-line)#transport input ssh R4(config-line)#exit R4(config)#line vty 2 4 R4(config-line)# transport input none R4(config-line)#end