ICSI Netalyzr launch #2
Folks, you may recall that last June we released a beta version of Netalyzr, a Java applet you can run by surfing to netalyzr.icsi.berkeley.edu (or to netalyzr.com). It measures a bunch of the properties of an end user's network access, particularly looking for transparent modifications (e.g., hidden proxies or blocking), connectivity restrictions, DNS modifications, and some security issues (e.g., whether the DNS resolver is vulnerable to the Kaminsky attack). You can see a sample report at: http://netalyzr.icsi.berkeley.edu/restore/id=example-session That launch was fairly successful (~50K users). Since then we've been working on a bunch of improvements, and today we've gone out of beta with an updated version, so you may be hearing about reports your customers have gotten from it. Also, as Netalyzr forms the foundation for a large-scale measurement study of the Internet's edge, to the degree that you pass along the word so that more people run it, that would be highly helpful with us gathering comprehensive data for the project. Thanks, Vern Vern Paxson Associate Professor EECS Department 737 Soda Hall - MC 1776 University of California Berkeley, CA, USA 94720-1776 +1 510 643-4209 v...@eecs.berkeley.edu
ICSI Netalyzr launch
Folks, you might be interested in checking out a network monitoring tool we launched today, Netalyzr. It's a Java applet you can run by surfing to netalyzr.com. It aims to measure a bunch of the properties of and end user's network access, particularly looking for transparent modifications (e.g., hidden proxies), connectivity restrictions, and some security issues (e.g., whether the DNS resolver is vulnerable to the Kaminsky attack). We've had several thousand users run it today so far, so you may be hearing about reports your customers have gotten from it. You can see a sample report at: http://netalyzr.icsi.berkeley.edu/restore/id=example-session - Vern
Re: ICSI Netalyzr launch
> didn't want to spring for a cert for that eh? www.startssl.com ... hey > lookie! free certs! ? We bought a cert from Thawte specifically so people wouldn't find that it's suspect. Does it look funny when your browser presents it to you? Vern
Re: passive bandwidth estimation
> > Any idea how can one do bandwidth measurement based on this? > > vern paxson did extensive work in this area. van jacobson too. For more recent work, see the papers of Constantine Dovrolis. (Likely others, too, but that's the work that comes immediately to mind.) Vern