VMware NSX-T Tier-0 Gateway RTR Security Technical Implementation Guide
Rules, Groups, and Values defined within the XCCDF Benchmark
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The NSX-T Tier-0 Gateway must be configured to reject inbound route advertisements for any prefixes belonging to the local autonomous system (AS).
Accepting route advertisements belonging to the local AS can result in traffic looping or being black holed, or at a minimum using a non-optimized path.Rule Medium Severity -
The NSX-T Tier-0 Gateway must be configured to have the DHCP service disabled if not in use.
A compromised router introduces risk to the entire network infrastructure, as well as data resources that are accessible via the network. The perimeter defense has no oversight or control of attack...Rule Low Severity -
The NSX-T Tier-0 Gateway must be configured to enforce a Quality-of-Service (QoS) policy to limit the effects of packet flooding denial-of-service (DoS) attacks.
DoS is a condition when a resource is not available for legitimate users. Packet flooding distributed denial-of-service (DDoS) attacks are referred to as volumetric attacks and have the objective o...Rule Medium Severity -
The NSX-T Tier-0 Gateway must be configured to implement message authentication for all control plane protocols.
A rogue router could send a fictitious routing update to convince a site's perimeter router to send traffic to an incorrect or even a rogue destination. This diverted traffic could be analyzed to l...Rule Medium Severity -
The NSX-T Tier-0 Gateway must be configured to use the BGP maximum prefixes feature to protect against route table flooding and prefix de-aggregation attacks.
The effects of prefix de-aggregation can degrade router performance due to the size of routing tables and also result in black-holing legitimate traffic. Initiated by an attacker or a misconfigured...Rule Medium Severity -
The NSX-T Tier-0 Gateway must be configured to have all inactive interfaces removed.
An inactive interface is rarely monitored or controlled and may expose a network to an undetected attack on that interface. If an interface is no longer used, the configuration must be deleted.Rule Low Severity -
SRG-NET-000131-RTR-000035
Group -
SRG-NET-000018-RTR-000003
Group -
SRG-NET-000019-RTR-000003
Group -
The NSX-T Tier-0 Gateway must be configured to disable Protocol Independent Multicast (PIM) on all interfaces that are not required to support multicast routing.
If multicast traffic is forwarded beyond the intended boundary, it is possible that it can be intercepted by unauthorized or unintended personnel. Limiting where, within the network, a given multic...Rule Medium Severity
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