Author Archives: zihu

Digit-1.1 release

Digit-1.1 has been released  (available at https://ant.isi.edu/software/tdns/index.html).  Digit is a DNS client side tool that can perform DNS queries via different protocols such as UDP, TCP, TLS. This tool is primarily designed to evaluate the client side latency of using DNS … Continue reading

Posted in Uncategorized | Tagged , , , , , , , , , , , , | Leave a comment

new conference paper “The Need for End-to-End Evaluation of Cloud Availability” in PAM 2014

The paper “The Need for End-to-End Evaluation of Cloud Availability” was published by PAM 2014 in Marina del Rey, CA (available at http://www.isi.edu/~zihu/paper/cloud_availability.pdf). From the abstract: People’s computing lives are moving into the cloud, making understanding cloud availability increasingly critical. Prior studies of … Continue reading

Posted in Uncategorized | Tagged , , , , , , , , , , , , , , , | Leave a comment

Complete IPv4 geolocation dataset now available

We recently finished the work of geolocating all IPv4 addresses and plotted a “complete IP geolocation map“. This work is based on our previous IMC paper “Towards Geolocation of Millions of IP Addresses“, joint work of Zi Hu, John Heidemann, and … Continue reading

Posted in Uncategorized | Tagged , , , , , , , , , | Leave a comment

New conference paper “Towards Geolocation of Millions of IP Addresses” at IMC 2012

The paper “Towards Geolocation of Millions of IP Addresses” was accepted by IMC 2012 in Boston, MA (available at http://www.isi.edu/~johnh/PAPERS/Hu12a.html). From the abstract: Previous measurement-based IP geolocation algorithms have focused on accuracy, studying a few targets with increasingly sophisticated algorithms taking … Continue reading

Posted in Uncategorized | Tagged , , , , , , , , , , , , | 1 Comment

New Tech Report “Towards Geolocation of Millions of IP Addresses”

We just published a new technical report “Towards Geolocation of Millions of IP Addresses”, available at ftp://ftp.isi.edu/isi-pubs/tr-680.pdf. From the abstract: Previous measurement-based IP geolocation algorithms have focused on accuracy, studying a few targets with increasingly sophisticated algorithms taking measurements from tens … Continue reading

Posted in Uncategorized | Tagged , , , , , , | Leave a comment