Internet outages are inevitable, frequent, opaque, and expensive. To make things worse,
they are poorly understood, while a deep understanding of them is essential for …

Adversaries are often able to penetrate networks and compromise systems by exploiting
vulnerabilities in people and systems. The key to the success of these attacks is information …

Computer systems are often difficult to debug and understand. A common way of gaining
insight into system behavior is to inspect execution logs and documentation. Unfortunately …

A nation-scale firewall, colloquially referred to as the “Great Firewall of China,” implements
many different types of censorship and content filtering to control China's Internet traffic. Past …

Large scale active measurement of the Internet requires appropriate software support. The
better tools that we have for executing consistent and systematic measurements, the more …

Middleboxes such as firewalls, NAT, proxies, or Deep Packet Inspection play an increasingly
important role in various types of IP networks, including enterprise and cellular networks …

The Internet was designed to always find a route if there is a policy-compliant path.
However, in many cases, connectivity is disrupted despite the existence of an underlying …

A proposal to improve routing security---Route Origin Authorization (ROA)---has been
standardized. A ROA specifies which network is allowed to announce a set of Internet …

We present Dasu, a measurement experimentation platform for the Internet's edge. Dasu
supports both controlled network experimentation and broadband characterization, building …

Quality and cost are two key considerations for video conferencing services. Service
providers face a dilemma when selecting network tiers to build their infrastructure---relying …