Responder
LLMNR, NBT-NS and MDNS poisoner used to grab credentials on local networks during penetration tests.
External Tool
This open-source tool is maintained externally. View the source on GitHub to learn more or run it yourself.
Browse security tools →What's next with Responder?
Choose how you want to get started.
Use it free
Open the official tool or demo — no account needed.
Self-host it
Run the open-source version on your own infrastructure.
What is Responder?
Responder is a free network poisoning tool used by professionals and enthusiasts.
How it works
How Responder works — see the article below for details on this security tools tool.
How to use it
- 1Open the Responder tool, enter your input, and get your result instantly.
What it can do
- network poisoning tool
Use cases
Assumptions and limitations
Assumptions
- source: https://github.com/lgandx/Responder
- license: GPL-3.0 — free to use
- privacy: Self-hosted — you control your data
Limitations
- Offensive tool — authorized penetration testing and lab use only; unauthorized use is illegal.
Understanding the result
LLMNR, NBT-NS and MDNS poisoner used to grab credentials on local networks during penetration tests.
Tool details
- Clearly flagged when a network request is needed.
- No account, no sign-up, and no tracking of your content.
- Powered by (GPL-3.0).
- Built with
- (lgandx/Responder)
- License
- GPL-3.0
- Runs locally
- No — requires a network request
- Verification
- Not yet verified
- Input
- Query
- Output
- Text
Built with lgandx/Responder. OpenToolVault provides the discovery and browser interface while crediting the original project maintainers.
- Built with
- License
- GPL-3.0
Open-source project
OpenToolVault is an independent directory. We are not affiliated with or endorsed by this project.
References
- / — GitHub Repository
Upstream project · GitHub
- GPL-3.0 License
Upstream project