# sunrpcreflection **Explanation** The sunrpcreflection event in Netography Fusion Portal is designed to detect attacks against the SunRPC protocol used to manage network communication between servers and clients. Attackers can exploit reflection-based techniques to amplify their attack traffic and generate a large volume of traffic to overwhelm a network. The attack works by sending a request to an exposed UDP service that has a large response to a small request. The response is then spoofed to the victim's IP address, resulting in a DDoS attack. **What to Look For** If the sunrpcreflection event is triggered, network administrators should investigate the source IP address or range where the suspicious traffic is originating from. They should also examine UDP traffic on the network for signs of the SunRPC protocol being used. On endpoints, administrators should be aware of any unusual network activity or performance issues. To prevent these types of attacks, network administrators should ensure that SunRPC services are properly secured and not exposed to the public internet. **Related MITRE ATT\&CK Categories** [Impact: Network Denial of Service, Technique T1498 - Enterprise](https://attack.mitre.org/techniques/T1498) --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.fusion.vectra.ai/detection-models/library/denial-of-service/sunrpcreflection.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.