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CAIDA Internet Data -- Passive Data Sources

CAIDA collects several different data types at geographically and topologically diverse locations, and makes this data available to the research community to the extent possible while preserving the privacy of individuals and organizations who donate data or network access.

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Passive Data Sources

Commodity/Backbone Internet LinksAssociated Data

CAIDA has (and had) monitoring locations in several large Internet Service Providers (ISPs) in the United States. These taps collect packet headers at large peering points and the resulting traces have been used for a wide variety of research projects, ranging from general attempts to characterize the global state of Internet traffic, specific studies of the prevalence of peer-to-peer filesharing traffic, to testing prototype software designed to stop the spread of Internet worms.

Network TelescopeAssociated Data

The UCSD Network Telescope provides a unique view of anomalous traffic with no legitimate destination carried on the Internet. In addition to misdirected traffic as a result of typographical or configuration errors, the Network Telescope monitors malicious events including Denial-of-Service attack backscatter, Internet worms, and host scanning.

Domain Name System (DNS) Root ServersAssociated Data

The Domain Name System (DNS) functions as the Yellow Pages of the Internet, translating the human-comprehensible names that computers use to access web pages into numerical IP addresses necessary to locate the web servers housing those page. Thirteen root DNS servers (some with many instances) form the core of the DNS service worldwide. CAIDA has monitored traffic to and from these DNS servers, including datasets aimed at recording the number of invalid requests for private address space (RFC 1918) that the root servers receive.

San Diego Network Access Point (SDNAP)Associated Data

The San Diego Network Access Point (SDNAP) serves as a peering point for 23 Organizations and Internet Service Providers in the San Diego area. Traces from this location provide insight specific to the local traffic the links carry.

OC12 Commodity LinksAssociated Data

CAIDA monitors an OC12 link connecting Florida International University, the AMPATH International Exchange Point, and Internet2.

For many years, CAIDA also monitored Internet traffic at several OC12 links, including one located at NASA Ames and one located at the MAE-WEST traffic exchange.

University Internet Access LinkAssociated Data

For a number of past studies, CAIDA has collected a number of traces from the UCSD network access link, including such institutions as the Scripps Institute of Oceanography and the San Diego Supercomputer Center. Because these traces have the potential to contain information about college students, their research use and distribution are restricted by both state and federal laws.

  • UCSD (La Jolla, CA)
  Last Modified: Fri Oct-25-2019 12:31:26 PDT
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