Details
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 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.
Solution
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
Supportive Information
The following resource is also helpful.
This security hardening control applies to the following category of controls within NIST 800-53: Access Control.This control applies to the following type of system Cisco.
References
- 800-53|AC-10
- CAT|II
- CCI|CCI-000054
- Rule-ID|SV-215807r648759_rule
- STIG-ID|CISC-ND-000010
- STIG-Legacy|SV-105327
- STIG-Legacy|V-96189
- Vuln-ID|V-215807