> For the complete documentation index, see [llms.txt](https://docs.fusion.vectra.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.fusion.vectra.ai/detection-models/library/denial-of-service/chargenreflect.md). # chargenreflect Explanation This security event in the Netography Fusion Portal is designed to detect Chargen reflection attacks. Chargen, short for Character Generator Protocol, is a legacy protocol that can be used **Explanation** This security event in the Netography Fusion Portal is designed to detect Chargen reflection attacks. Chargen, short for Character Generator Protocol, is a legacy protocol that can be used by attackers to amplify DDoS attacks. In a Chargen reflection attack, the attacker sends UDP packets with spoofed source addresses to a vulnerable server running the Chargen protocol, which will then respond with a much larger packet to the target IP address. **What to Look For** When examining the results of the chargenreflect security event, look for anomalous network traffic patterns involving UDP packets. Specifically, look for large amounts of traffic from a single source address to multiple destination addresses, which may indicate a potential Chargen reflection attack. Additionally, check any servers or endpoints on the network running the Chargen protocol for signs of exploitation, such as high CPU or memory usage. If a Chargen reflection attack is detected, take immediate steps to block the malicious traffic. If hosts on your network are being used as reflection amplifiers, take action to deactivate vulnerable services, or block access to those systems from the internet. **Related MITRE ATT\&CK Categories** [Impact: Network Denial of Service, Technique T1498 - Enterprise](https://attack.mitre.org/techniques/T1498) --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation by asking a question. Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters: ``` GET https://docs.fusion.vectra.ai/detection-models/library/denial-of-service/chargenreflect.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case. 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.