The Rumble Network Discovery Blog

DNS Ping Scans via Open Resolvers
Published on April 2, 2019

Our last post covered some of the ways that Rumble gathers information from DNS services. While working on the tracer implementation, we identified a trick that other folks might find it useful. It turns out that most DNS resolvers do not filter the address ranges they will contact when handling a request, allowing for remote subnet “ping scans” with a little work. This technique isn’t foolproof, and is probably not new, but it may have interesting security implications.

DNS Parlor Tricks for Network Discovery
Published on March 31, 2019

DNS is an amazing protocol. After starting life as a simple mechanism for name resolution, it is now used to enforce TLS rules, prevent email impersonation, authorize users, protect endpoints, enable service discovery, and much more. DNS services run across a range of devices and provide quite a bit of information about the environment, given the right queries. This post describes the techniques used by the Beta 2 version of Rumble Network Discovery to identify DNS services.

Rumble Network Discovery Beta 2
Published on March 26, 2019
Two weeks after our Beta 1 release, we are excited to announce the next iteration of the Rumble Network Discovery platform, Beta 2! We are incredibly grateful to all of the folks who tried out Beta 1 and provided feedback about their experience. Feedback came from all corners of world and from users working across a range of industries and roles. Thank you! If you would like to join the Beta process, registration is open.
Rumble Network Discovery Beta 1 Highlights
Published on March 11, 2019
Now that the first beta release of Rumble Network Discovery is available for testing, we wanted to highlight some of the things that the product does differently. Command-Line Scanner & Offline Support This release allows basic inventory to be completed using either an installed agent or the command-line scanner. Both the agent and the scanner consist of a single executable with no external dependencies. The command-line scanner can be used in offline environments and for work that is security sensitive, where uploading data back to the cloud isn’t an option.
Rumble Network Discovery in Beta
Published on March 11, 2019
We are ridiculously excited to announce the beta program for Rumble Network Discovery, our first product, a platform designed to make network asset discovery quick and painless. Rumble is cloud-based, but also includes a command-line scanner that runs on Windows, macOS, and multiple architectures of Linux, including servers, Raspberry Pis and almost everything in between. If you are responsible for managing or assessing networks, we hope that you will give it a try.