The goal of the Glasnost project is to make ISPs' traffic shaping policies transparent to their customers.
To this end, we designed Glasnost tests that enable you to check whether traffic from your applications is
being rate-limited (i.e., throttled) or blocked.
Glasnost tests work by measuring and comparing the performance of different application flows between your
host and our measurement servers. The tests can detect traffic shaping in both upstream and downstream
directions separately. The tests can also detect whether application flows are shaped based on their port
numbers or their packets' payload. For more details on how Glasnost tests work, please
read our NSDI 2010 paper.
We configured our tests to be conservative when declaring the presence of shaping, i.e., passing our tests
does not necessarily mean that there is no throttling occurring on your link.
Glasnost makes use of the Measurement Lab
(M-Lab) research platform.|
To learn what information our tool collects, please go
Who are we?
We are researchers at the Max Planck Institute for Software Systems.
Our research focuses on characterizing residential broadband networks and understanding their
implications for the designers of future protocols and applications.
In case you have questions about this tool or our research, please visit our
network transparency project webpage or contact us via e-mail: