Title

The RUCKUS ICX device must be configured to protect against known types of denial-of-service (DoS) attacks by employing organization-defined security safeguards. (Cat II impact)

Discussion

DoS is a condition that occurs 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).

Check Content

Check whether DDoS protection in place: SSH@ICX# show running-config | include burst ip icmp attack-rate burst-normal 50 burst-max 100 lockup 300 ip tcp burst-normal 30 burst-max 100 lockup 300 * burst-normal, burst-max, and lockup values may vary by site. If the switch is not configured with DDoS protection this is a finding.

Fix Text

Configure DDoS protection: SSH@ICX(config)# ip icmp attack-rate burst-normal 50 burst-max 100 lockup 300 SSH@ICX(config)# ip tcp burst-normal 30 burst-max 100 lockup 300 Note: burst-normal, burst-max, and lockup values may vary by site.

Additional Identifiers

Rule ID: SV-273829r1110847_rule

Vulnerability ID: V-273829

Group Title: SRG-APP-000435-NDM-000315

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.