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Assessment Title
Rule Text
The Dell OS10 BGP router must be configured to reject inbound route advertisements from a customer edge (CE) router for prefixes that are not allocated to that customer.
Description
Discussion Text
As a best practice, a service provider should only accept customer prefixes that have been assigned to that customer and any peering autonomous systems. A multihomed customer with BGP speaking routers connected to the internet or other external networks could be breached and used to launch a prefix deaggregation attack. Without ingress route filtering of customers, the effectiveness of such an attack could impact the entire IP core and its customers.
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