Title

Virtual edge gateways must be deployed across multiple hypervisor hosts. (Cat III impact)

Discussion

An edge gateway is deployed to allow north-south traffic to flow between the virtualized network and the physical network, including destinations outside of the data center or enclave boundaries. The gateway can also filter the north-south traffic to enforce security policies for communication between the physical and virtual workloads. If the edge gateways deployed as virtual machines are resident on the same host, the host becomes a single point of failure for all communication between the virtual workload and the physical network infrastructure. Deploying the edge gateways across multiple hypervisor hosts eliminates the risk of a single point of failure, thereby ensuring there is always reachability between virtual machines and the physical network infrastructure and reducing the risk of black-holing north-south traffic.

Check Content

Review the network virtualization platform topology and the SDN manager to verify that each virtual edge gateway has been deployed across multiple hypervisor hosts. If each virtual edge gateway has not been deployed across multiple hypervisor hosts, this is a finding.

Fix Text

Deploy each virtual edge gateway across multiple hypervisor hosts.

Additional Identifiers

Rule ID: SV-87771r1_rule

Vulnerability ID: V-73119

Group Title: NET-SDN-028

Expert Comments

CCIs tied to check.

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