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OS10-NDM-000800 - The Dell OS10 Switch must be configured to protect against known types of denial-of-service (DoS) attacks by employing organization-defined security safeguards.

Information

DoS is a condition when a resource is not available for legitimate users. When this occurs, the organization either cannot accomplish its mission or must operate at degraded capacity.

This requirement addresses the configuration of network devices to mitigate the impact of DoS attacks that have occurred or are ongoing on device availability. For each network device, known and potential DoS attacks must be identified and solutions for each type implemented. A variety of technologies exist to limit or, in some cases, eliminate the effects of DoS attacks (e.g., limiting processes or restricting the number of sessions the device opens at one time). Employing increased capacity and bandwidth, combined with service redundancy, may reduce the susceptibility to some DoS attacks.

The security safeguards cannot be defined at the DOD level because they vary according to the capabilities of the individual network devices and the security controls applied on the adjacent networks (for example, firewalls performing packet filtering to block DoS attacks).

NOTE: Nessus has provided the target output to assist in reviewing the benchmark to ensure target compliance.

Solution

Configure the network device to protect against or limit the effects of all known types of DoS attacks by employing organization-defined security safeguards.

Create an appropriate QoS policy for CoPP:

OS10(config)# class-map type control-plane example-copp-class-map-name
OS10(config-cmap-control-plane)# exit
OS10(config)# policy-map type control-plane example-copp-policy-map-name
OS10(config-pmap-control-plane)# class example-copp-class-map-name
OS10(config-pmap-c)# set qos-group 2
OS10(config-pmap-c)# police cir 100 pir 100

Assign the control-plane service-policy:

OS10(config)# control-plane
OS10(conf-control-plane)# service-policy input example-copp-policy-map-name

Configure inbound ACLs to restrict which packets should be allowed to reach to the control plane from the OOBM management port and from the front panel data ports:

OS10(config)# ip access-list MGMT_TRAFFIC_FROM_OOBM
OS10(config-ipv4-acl)# permit ...
OS10(config-ipv4-acl)# permit ...
OS10(config-ipv4-acl)# deny ... log
OS10(config-ipv4-acl)# deny ... log

OS10(config)# ip access-list MGMT_TRAFFIC_FROM_DATA
OS10(config-ipv4-acl)# permit ...
OS10(config-ipv4-acl)# permit ...
OS10(config-ipv4-acl)# deny ... log
OS10(config-ipv4-acl)# deny ... log

Apply the ACLs to the ingress of the control-plane:

OS10(config)# control-plane
OS10(config-control-plane)# ip access-group MGMT_TRAFFIC_FROM_OOBM mgmt in
OS10(config-control-plane)# ip access-group MGMT_TRAFFIC_FROM_DATA data in

See Also

https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_Dell_OS10_Switch_Y24M12_STIG.zip

Item Details

Category: SYSTEM AND COMMUNICATIONS PROTECTION

References: 800-53|SC-5, CAT|II, CCI|CCI-002385, Rule-ID|SV-269798r1051779_rule, STIG-ID|OS10-NDM-000800, Vuln-ID|V-269798

Plugin: Dell_OS10

Control ID: 6e7f4b350ccada239758d3a606b4d918d84d176045655037b78c03e7b9f04c9d