PPT-Domain Name System (DNS)

Joe Abley AfNOG Workshop AIS 201 6 Gaborone Session 2 Resolver Operation and debugging DNS Resolver Operation How Resolvers Work 1 If weve dealt with this query before recently answer is already in the cache easy. 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: . (or Service). (DNS). . Computer Networks . Spring . 2012. DNS Outline. Infrastructure Services. DNS Hierarchical Structure. Root Name Servers. Top-Level Domain Servers. Authoritative Name Servers. 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. DoS. Attacks. Hitesh . Ballani. , Paul Francis. 1. Outline. What is DNS?. What is the . P. roblem?. Solution. Evaluation. Conclusions. 2. Domain Name System. 3. Client. DNS Resolver. Root . Nameserver. 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 . What is DNS?. 1. Domain Name System. The . Domain Name System (DNS) is used to resolve human-readable . hostnames . into machine-readable IP . addresses.. How does DNS Works?. 2. How Does DNS Works?. . 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 . 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. Shenker. and John . Jannotti. Rodrigo Fonseca. Administrivia. Thursday: . TCP Milestone II. HW3 Out. Midterm back early next week. This week: application layer (DNS, Web). We know how to open TCP connections to a server/port:. 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 . Directory Technical Guide June 9 , 202 1 Notices Customers are responsible for making their own independent assessment of the information in this document. This document: (a) is for informational pu 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 Making Windows DNS Server Cloud Ready. ~Kumar Ashutosh, Microsoft. Windows DNS Server. Widely deployed in enterprises . Fair presence in the DNS resolver . space. Standards compliant and interoperable. 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.