PPT-Domain Name System | DNSSEC

Internet Protocol address uniquely identifies laptops or phones or other devices The Domain Name System matches IP addresses with a name IP routing and DNS are the underpinning of unified Internet. Lutz Donnerhacke. db089309. : 1c1c 6311 ef09 d819 e029 65be bfb6 . c9cb. dig +. dnssec. 1.6.5.3.7.5.1.4.6.3.9.4.e164.arpa. . naptr. A . protocol. from better . times. An . ancient. . protocol. People were. Eric Osterweil. Dan Massey. Lixia Zhang. 1. Motivation: Why Use DNSSEC?. DNS cache poisoning has been a known attack against DNS since the 1990s [1]. Now there is a new variant: the . Kaminsky. attack. Geoff . Huston & George . Michaelson. . APNICLabs. September 2012. What are the questions?. What proportion of DNS resolvers are DNSSEC-capable?. What proportion of users are using DNSSEC-. validatingDNS. Michaelson. . APNICLabs. September 2012. What are the questions?. What proportion of DNS resolvers are DNSSEC-capable?. What proportion of users are using DNSSEC-. validatingDNS. resolvers?. Where are these users?. . 2013 . 12 June. . 2013. j. ohn.crain. @icann.org. DNS Basics. DNS converts names (www.uob.com.sg) to numbers (203.116.108.5). ..to identify services such as www and e-mail. ..that identify and link customers to business and visa versa. Port numbers for applications. MAC addresses for . hardware. IP . addresses for a way to send data in a smart, routable way. Addressing So Far. Problems with MACs/IPs/Ports. Humans . are . bad at. remembering strings of numbers. OAS-CICTE REMJA/OAS WEF Cyber Crime Workshop, Montevideo, Uruguay. 10 July 2012. r. ichard.lamb@icann.org. What is ICANN?. IANA function . coordinate unique identifiers (root and top-level domain names, IP address allocation, protocol number assignments, time zone database, other…). Geoff Huston. October 2020. Three broad topics:. DNSSEC. DNS Privacy. Other Stuff. 1. DNSSEC – Why?. How can you believe what the DNS tells you?. You can’t!. DNS interception and rewriting is common these days. Geoff Huston. APNIC Labs. DNS Security. Setting the AD bit in a recursive resolver response seems like a rather unimpressive way of conveying a positive security outcome, and in the same manner, setting SERVFAIL seems like a rather poor way of conveying a failed security outcome. James Richards, Researcher. Nominet. What are we studying?. Many DNSSEC deployment studies focus on lists of domains such as those occurring in popular lists or TLDs.. Users are rarely delivered website content from one single domain name – often multiple domains are utilized. Huston. APNIC. February 2014. The E. volution of Evil. It used to be that . they sent . evil packets to . their . chosen . victim. but this exposed the attacker, and limited the damage they could cause. in today’s Internet. Geoff Huston. APNIC . June 2016. What is being measured?. Clients who will perform DNSSEC validation of a domain name. Using RSA/SHA-1 as the crypto algorithm. Who will not resolve a badly-signed domain name. Domain Name System (DNS). Developed by . Postel. & Mockapetris. www.internic.net. is a good site to browse. The phone book of the internet. But more restrictive … Each entry must be. Unique. Authentic. ‹#›. rzhung. Purpose. The goal is to build a complete DNS in intranet, which may include D. NS Delegation, . Authoritative-Only DNS, DNSSEC, Resolver, etc.. Know what you should know about configuring and managing of these services..