SDN Controller Security Requirements Guide
Rules, Groups, and Values defined within the XCCDF Benchmark
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SRG-NET-000512
<GroupDescription></GroupDescription>Group -
The SDN controller must be configured to be deployed as a cluster and on separate physical hosts.
<VulnDiscussion>SDN relies heavily on control messages between a controller and the forwarding devices for network convergence. The controlle...Rule Medium Severity -
SRG-NET-000512
<GroupDescription></GroupDescription>Group -
The SDN Controller must be configured to notify the forwarding device to either drop the packet or make an entry in the flow table for a received packet that does not match any flow table entries.
<VulnDiscussion>Reactive flow setup occurs when the SDN-aware switch receives a packet that does not match the flow table entries and hence t...Rule Medium Severity -
SRG-NET-000512
<GroupDescription></GroupDescription>Group -
SDN controller must be configured to forward traffic based on security requirements.
<VulnDiscussion>For security reasons, an organization may choose to have traffic that is inbound to a server go through a specific firewall. ...Rule Medium Severity -
SRG-NET-000512
<GroupDescription></GroupDescription>Group -
The SDN controller must be configured to enable multi-tenant virtual networks to be fully isolated from one another.
<VulnDiscussion>Network-as-a-Service (NaaS) is often implemented in a multi-tenant paradigm, where customers share network infrastructure and...Rule Medium Severity -
SRG-NET-000512
<GroupDescription></GroupDescription>Group -
The SDN controller must be configured to separate tenant functionality from system management functionality.
<VulnDiscussion>Network-as-a-Service (NaaS) is frequently offered in a multi-tenant paradigm, where customers share network infrastructure. S...Rule Medium Severity -
SRG-NET-000512
<GroupDescription></GroupDescription>Group -
The SDN controller must be configured to isolate security functions from non-security functions.
<VulnDiscussion>An isolation boundary provides access control and protects the integrity of the hardware, software, and firmware that perform...Rule Medium Severity -
SRG-NET-000512
<GroupDescription></GroupDescription>Group -
The SDN controller must be configured to notify the ISSO and ISSM of failed verification tests for organization-defined security functions.
<VulnDiscussion>If personnel are not notified of failed security verification tests, they will not be able to take corrective action and the ...Rule Medium Severity -
SRG-NET-000512
<GroupDescription></GroupDescription>Group -
The SDN controller must be configured to prohibit user installation of software without explicit privileged status.
<VulnDiscussion>Allowing regular users to install software, without explicit privileges, creates the risk that untested or potentially malici...Rule Medium Severity -
SRG-NET-000512
<GroupDescription></GroupDescription>Group -
The SDN controller must be configured to enforce access restrictions associated with changes to the configuration.
<VulnDiscussion>Failure to provide logical access restrictions associated with changes to application configuration may have significant effe...Rule Medium Severity -
SRG-NET-000512
<GroupDescription></GroupDescription>Group -
The SDN controller must be configured to audit the enforcement actions used to restrict access associated with changes to any application within the SDN framework.
<VulnDiscussion>Without auditing the enforcement of access restrictions against changes to any application within the SDN framework, it will ...Rule Medium Severity
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