PPT-Domain Name System ( DNS )

DNS is the system that provides name to address mapping for the internet Name Space The names assigned to machines must be unique because the addresses are unique A name space that maps each address to a unique name can be organized in two ways . Theory. 1. How DNS works. Theory. 2. 3. How DNS Works - Theory. Domain names. Arranged in a tree. Cut into zones. Each served by a nameserver. 4. How DNS Works - Theory. Domain name space consists of a tree of domain names. Summit College. Business Technology Dept.. 2440: 141. Web Site Administration . Domain Name System. Instructor: Enoch E. Damson. Domain Name System/Service. The Domain Name System (DNS) is used to translate host names to IP addresses on the Internet. . Abhishek Madav(86378148). . Suhas Tikoo(22363556). . Urjit Khadilkar(24449837). Motivation. We plan to device . a heterogeneous service . that would monitor the resolution of the user’s . Yeo Deng . Jie. (DJ). July 2016. Every device, application, user, end point, relies on DNS. DNS. The importance of DNS. DNS is a . core networking service. DNS is exploited for malicious activity. IoT. 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. IP Address Management service. DNS (Domain Name System). Authoritative DNS: publishing zones. Recursive DNS: resolving queries. DHCP (Dynamic Host Configuration Protocol). Keeping track of IP allocations. Qurat-Ul-Ann Akbar, Northwestern U. . Marcel Flores, Northwestern U.. Aleksandar. Kuzmanovic, Northwestern U.. http://networks.cs.northwestern.edu. Internet Censorship is a prevalent problem . WIPO Internet Domain Name Processes . (“WIPO 1” and “WIPO 2”). GIs and Country Names . at the 2nd level in . existing gTLDs . and in . ccTLDs. GIs and Country Names . at . the Top and 2nd . levels . DNS. Mechanism for IP <> hostname resolution. Globally distributed database. Hierarchical structure. Comprised of three components. A “name space”. Servers making that name space available. 1 Abstract — Internet infrastructure. In recent times there have been numerous attacks on DNS, the Kaminsky attack being one of the more insidious ones . Current solutions to the problem involve Host addresses: . e.g., 169.229.131.109. a number used by protocols. conforms to network structure (. the “where”. ). Host names: . e.g., . instr.eecs.berkeley.edu. mnemonic name usable by humans. 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. . Network . Programming: . UDP,. . TCP. Th. is. . deck. . of. . slides. are heavily based on CPSC 433/533 at Yale University, by courtesy of Dr. Y. Richard Yang. . Qiao. . Xiang. ,. . Congming. 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.