'Dns resolver' diaporamas de présentation

Information retrieval

Information retrieval. 201 9 /20 20. crawler. web crawler , Web spider , Web robot Starts from one/several sources ( url ) Stores documents cache / retrieved data Looks for new urls within documents Stores new url to the stack Visits next url (recursively / from stack). example.

933 views • 78 slides

The Domain Name System and DNS Blocking

The Domain Name System and DNS Blocking. Malcolm Hutty Head of Public Affairs, LINX http://publicaffairs.linx.net. About LINX. A membership association for network operators Based in London, UK One of the largest Internet Exchanges in the world 400 member networks from over 50 countries

850 views • 66 slides

Ch 3: DNS Vulnerabilities

Ch 3: DNS Vulnerabilities. Causes of Vulnerabilities. Configuration errors Architecture mistakes Vulnerable software implementations Protocol weaknesses Failure to use the security extensions in the protocol. DNS Architecture Mistakes. Single Point of Failure.

482 views • 36 slides

Measuring DNSSEC

Measuring DNSSEC. Geoff Huston & George Michaelson APNICLabs October 2012. What are the questions?. What proportion of DNS resolvers are DNSSEC-capable? What proportion of users are using DNSSEC- validating DNS resolvers? Where are these users?. Experimental Technique.

316 views • 31 slides

DNSSEC: Where We Are (and how we get to where we want to be)

DNSSEC: Where We Are (and how we get to where we want to be). DNSSEC ASIA SUMMIT 2012 29-31 August 2012 richard.lamb@icann.org. DNSSEC: We have passed the point of no return. Fast pace of deployment at the TLD level Deployed at root Supported by software Growing support by ISPs

445 views • 29 slides

IP Version 6

480 views • 28 slides

Name Directory Service based on MAODV and Multicast DNS for IPv6 M ANET

Name Directory Service based on MAODV and Multicast DNS for IPv6 M ANET. Jaehoon Jeong, ETRI paul@etri.re.kr http://www.adhoc.6ants.net/~paul/. VTC 2004 Fall. Contents. Introduction Related Work Name Service within IPv6 MANET Scenario of Name Service within MANET Name Directory Service

493 views • 18 slides

An Experiment in Implementing a Stateless TCP DNS Server

An Experiment in Implementing a Stateless TCP DNS Server. Geoff Huston APNIC. IP Networking 101. There are two major transport protocols in IP: TCP when reliable data transfer is needed UDP for simple lightweight transactions. IP Networking 102.

305 views • 18 slides

An Experiment in Implementing a Stateless TCP DNS Server

An Experiment in Implementing a Stateless TCP DNS Server. Geoff Huston APNIC. IP Networking 101. There are two major transport protocols in IP: TCP when reliable data transfer is needed UDP for simple lightweight transactions. IP Networking 102.

190 views • 18 slides

Comparing DNS Resolvers in the Wild

Comparing DNS Resolvers in the Wild. DNS. Domain Name System Translates domain names into IP addresses Hierarchical distributed System Nodes are called as name servers What are resolvers?. Comparing DNS Resolvers in the Wild. DNS has evolved a lot over the years

305 views • 17 slides

DNS Security

DNS Security. Fundamental Problems of Network Security. Internet was designed without security in mind Initial design focused more on how to make it work, than on how to prevent abuses Initial environment mostly consisted of research institutions---assumption on the benign behaviors of users

249 views • 13 slides