Internet Infrastructure and Key Network Locations
Explore the key locations and entities that form the backbone of the internet, including Verisign, NASA, ICANN, and more. Learn about the network infrastructure and hosting services provided by various organizations across different geographical locations.
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Presentation Transcript
Based partly on lecture notes by Scott Shenker and Rodrigo Fonseca
hosts.txt hosts.txt
A Verisign, Dulles, VA C Cogent, Herndon, VA D U Maryland College Park, MD G US DoD Vienna, VA H ARL Aberdeen, MD J Verisign K RIPE London I Autonomica, Stockholm E NASA Mt View, CA F Internet Software Consortium PaloAlto, CA M WIDE Tokyo B USC-ISI Marina del Rey, CA L ICANN Los Angeles, CA
A Verisign, Dulles, VA C Cogent, Herndon, VA (also Los Angeles, NY, Chicago) D U Maryland College Park, MD G US DoD Vienna, VA H ARL Aberdeen, MD J Verisign (21 locations) K RIPE London (plus 16 other locations) I Autonomica, Stockholm (plus 29 other locations) E NASA Mt View, CA F Internet Software Consortium, PaloAlto, CA (and 37 other locations) M WIDE Tokyo plus Seoul, Paris, San Francisco B USC-ISI Marina del Rey, CA L ICANN Los Angeles, CA
www.cs.brown.edu. cs.brown.edu. cs.brown.edu. 86400 IN A 128.148.32.110 86400 IN NS dns.cs.brown.edu. 86400 IN NS ns1.ucsb.edu.
. 3600000 IN NS A.ROOT-SERVERS.NET. A.ROOT-SERVERS.NET. 3600000 A 198.41.0.4 ...
dig . ns dig . ns dig + dig +norec norec www.cs.brown.edu www.cs.brown.edu @ @a.root a.root- -servers.net servers.net dig + dig +norec norec www.cs.brown.edu www.cs.brown.edu @ @a.edu a.edu- -servers.net servers.net dig + dig +norec norec www.cs.brown.edu www.cs.brown.edu @bru @bru- -ns1.brown.edu ns1.brown.edu www.cs.brown.edu www.cs.brown.edu. . 86400 86400 IN IN A A 128.148.32.12 128.148.32.12
www.google.com www.google.com. . www.l.google.com www.l.google.com. . 446199 446199 IN 300 300 IN IN A A IN CNAME CNAME www.l.google.com www.l.google.com. . 72.14.204.147 72.14.204.147 7.34.148.128.in 7.34.148.128.in- -addr.arpa. 86400 IN addr.arpa. 86400 IN PTR PTR quanto.cs.brown.edu quanto.cs.brown.edu. .
;; QUESTION SECTION: ;; QUESTION SECTION: ; ;www.evil.com www.evil.com. IN A . IN A ;; ANSWER SECTION: ;; ANSWER SECTION: www.evil.com www.evil.com. 300 IN A 212.44.9.144 . 300 IN A 212.44.9.144 ;; AUTHORITY SECTION: ;; AUTHORITY SECTION: evil.com evil.com. 600 IN NS dns1.evil.com. . 600 IN NS dns1.evil.com. evil.com evil.com. 600 IN NS . 600 IN NS google.com google.com. . ;; ADDITIONAL SECTION: ;; ADDITIONAL SECTION: google.com google.com. 10000 IN A 212.44.9.155 . 10000 IN A 212.44.9.155
The Collateral Damage of Internet Censorship by DNS Injection. Sigcomm CCR 42, 3 (June 2012)
See http://www.circleid.com/pdf/PROTECT-IP-Technical-Whitepaper-Final.pdf for details
