https://www.circleid.com/blogs/ Postings from on CircleID en Copyright 2026, unless where otherwise noted. 2026-04-08T19:45:00+00:00 https://circleid.com/posts20210504-ten-years-of-passive-dns https://circleid.com/posts20210504-ten-years-of-passive-dns More...]]> 2026-04-08T12:45:00-07:00 https://circleid.com/posts20170718_nation_scale_internet_filtering_dos_and_donts https://circleid.com/posts20170718_nation_scale_internet_filtering_dos_and_donts More...]]> 2026-04-08T12:45:00-07:00 https://circleid.com/posts20170420_the_limits_of_notice_and_takedown https://circleid.com/posts20170420_the_limits_of_notice_and_takedown More...]]> 2026-04-08T12:45:00-07:00 https://circleid.com/posts20170301_notice_takedown_borders_and_scale https://circleid.com/posts20170301_notice_takedown_borders_and_scale Notice and Takedown in the Domain Name System: ICANN's Ambivalent Drift into Online Content Regulation deserves an answer, which I shall attempt here. More...]]> 2026-04-08T12:45:00-07:00 https://circleid.com/posts20160330_let_me_make_yeti_dns_perfectly_clear https://circleid.com/posts20160330_let_me_make_yeti_dns_perfectly_clear I'm in big trouble now. So, let's discuss the matter. More...]]> 2026-04-08T12:45:00-07:00 https://circleid.com/posts20150420_internet_security_marketing_buyer_beware https://circleid.com/posts20150420_internet_security_marketing_buyer_beware More...]]> 2026-04-08T12:45:00-07:00 https://circleid.com/posts20141107_secure_unowned_hierarchical_anycast_root_name_service_and_apologia https://circleid.com/posts20141107_secure_unowned_hierarchical_anycast_root_name_service_and_apologia More...]]> 2026-04-08T12:45:00-07:00 https://circleid.com/posts20140629_painting_ourselves_into_a_corner_with_path_mtu_discovery https://circleid.com/posts20140629_painting_ourselves_into_a_corner_with_path_mtu_discovery More...]]> 2026-04-08T12:45:00-07:00 https://circleid.com/posts20140430_wow_bind9_910_is_out_and_what_a_list_of_features https://circleid.com/posts20140430_wow_bind9_910_is_out_and_what_a_list_of_features More...]]> 2026-04-08T12:45:00-07:00 https://circleid.com/posts20140206_extreme_vulnerability_at_the_edge_of_internet_universal_problem https://circleid.com/posts20140206_extreme_vulnerability_at_the_edge_of_internet_universal_problem core is stupid, and the edge is smart. This design decision has enabled the Internet's wildcat growth, since without complexity the core can grow at the speed of demand. On the downside, the decision to put all smartness at the edge means we're at the mercy of scale when it comes to the quality of the Internet's aggregate traffic load. Not all device and software builders have the skills - and the quality assurance budgets - that something the size of the Internet deserves. More...]]> 2026-04-08T12:45:00-07:00 https://circleid.com/posts20130913_on_the_time_value_of_security_features_in_dns https://circleid.com/posts20130913_on_the_time_value_of_security_features_in_dns More...]]> 2026-04-08T12:45:00-07:00 https://circleid.com/posts20120103_dns_firewalls_in_action_rpz_vs_spam https://circleid.com/posts20120103_dns_firewalls_in_action_rpz_vs_spam More...]]> 2026-04-08T12:45:00-07:00 https://circleid.com/posts20120327_dns_changer https://circleid.com/posts20120327_dns_changer More...]]> 2026-04-08T12:45:00-07:00 https://circleid.com/posts20120111_refusing_refused_for_sopa_pipa https://circleid.com/posts20120111_refusing_refused_for_sopa_pipa following the money, but other provisions having to do with regulating American Internet Service Providers (ISPs) so as to block DNS resolution for pirate or infringing web sites have been shown to be ineffectual, impractical, and sometimes unintelligible. More...]]> 2026-04-08T12:45:00-07:00 https://circleid.com/posts20121012_dns_policy_is_hop_by_hop_dns_security_is_end_to_end https://circleid.com/posts20121012_dns_policy_is_hop_by_hop_dns_security_is_end_to_end More...]]> 2026-04-08T12:45:00-07:00