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3 DNS conf cache /etc/resolv.conf /etc/nsswitch.conf named...22 i

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5 1 2006/05/12 1 DNS M&A phishing phishing DNS DNS DNS DNS DNS&BIND 2 DNS 2.1 jp jp Web 1

6 M&A jp 1 jp 6 com gtld cctld jp phishing 2.2 IP whois 2

7 BIND BIND BIND djbdns cache poisoning HTML HTML MUA example.com example.com example.com. IN NS ns.example.com. IN NS online.goodbank.com. ns.examle.com IN A online.goodbank.com IN A example.com ns.example.com IP online.goodbank.com IP online.goodbank.com phishing MTA MTA BIND

8 IP resolv.conf DNS DDoS DNS Web DNS CNAME CNAME spam OS 4

9 53/udp,tcp IP TTL TTL IP IP NS IP example.ac.jp ns.example.ac.jp ns.exampleac.jp exampleac.jp IP IP P2P 53 IP 2.4 visa.co.jp phishing 5

10 3 ISP DHCP IP PC IP IP URL example.ac.jp Web login.example.ac.jp login.example.ac login.example.ac.jp ID cctld ac cctld ne co ac.jp ac phishing Web cctld jp ac Web 4 DNS spam spam 6

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DNS (BIND, djbdns) JPNIC・JPCERT/CC Security Seminar 2005

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