Today, in Warsaw, during the RIPE68 morning session reserved for the Cooperation Working Group, Olaf Kolkman kindly presented my work about Content blocking methods and their impacts.
Olaf’s presentation was the first in a series of 3, all about censorship and censorship circumvention.
I’m happy to see that more and more tools are developed to increase the security level and trustworthiness of Internet applications. I already talked about DNSSEC and tools to check the validity of domain names, many others blogged about DANE and TLSA validation support in browsers; this time I would like to focus on DKIM and on a Thunderbird add-on to verify its signatures taking advantage of DNSSEC end-to-end validation.
After reading the interesting post by Stéphane Bortzmeyer on RIPE Labs (How Many RIPE Atlas Probes Can Resolve IPv6-only Domain Names?) I wondered how many RIPE Atlas probes used DNSSEC aware resolvers, so I tried to setup some measures and some comparisons.
As also expressed in the aforementioned post, it should be noted that RIPE Atlas probes can’t be used to represent general behaviors of Internet users; they are excellent “toys” in the hands of network engineers but nobody can ensure that their configuration reflects the one used in production environments by users or by servers or by applications.
After the good IPv6 Working Group presentations at RIPE67 I decided to put togheter some data regarding IPv6 adoption in Italy, analyzing enabled Government websites and enabled access networks.
The results are… quite encouraging from the point of view of the work that needs to be done!
Yes, I’m proud to announce the umpteenth maybe-useful IP subnet calculator (or call it whatever you want): IPv6 Prefix Calculator.
This one is an IPv6 only calculator, particularly focused on prefixes, which allows you to take a base network and split it in smaller sub-prefixes.
IPv6 Prefix Calculator
I hope that someone will find it useful; feel free to contact me for any problem or error you encounter using it.
You can find it here: http://www.pierky.com/ipv6-prefix-calculator