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Why and How to Leverage ASN data?

Why and How to Leverage ASN data?

An Autonomous Systems Number (ASN) is a unique number assigned to an Autonomous System (AS). ASN data is stored by Regional Internet Registries (RIRs). Usually, this data is used to look up where to route traffic to the correct network, for instance with the BGP protocol. However, ASN data also provides valuable information that is used to identify the organization controlling a set of IP addresses…

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What is a Geofeed? How to Set Up One?

What is a Geofeed? How to Set Up One?

Basically, a geofeed is a list of IP address ranges associated with geolocation information. The principle was authored by Google in July 2013. Starting August 2020, it is officially published as a standard under RFC 8805 with the name A Format for Self-Published IP Geolocation Feeds…

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How to Detect Tor Users with Ease?

How to Detect Tor Users with Ease?

The Onion Routing (Tor) is an open-source solution to enable anonymous communications. For instance, you can use it to anonymize your Internet traffic. Many journalists and political activists use Tor to avoid being prosecuted. Unfortunately, anonymity also means Tor is used for illicit activities. Here we discuss how the Tor network behaves, how Tor users can be detected, and when it makes sense to filter Tor activities…

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