2. Introduction Structure Operating Value Legislation Conclusion Reference Domain Name System

3. The Domain Name System (DNS) is a core Internet service that can be Domain Name and IP address mutual mapping to each other in a distributed database. Research by Paul and Kevin(1988) support, "The initial DNS design assumed the necessity of striking a balance between a very lean service and a completely general distributed database." Source: Mockapetri,K.V&Dunla,K.J.Development of the Domain Name System(1988). Retrieved from http://dl.acm.org/citation.cfm?id=52338 http://dl.acm.org/citation.cfm?id=52338 Introduction

4. Source: DNS Best Practices, Net work Protections, and Attack Identification (n.d.) Retrieved from http://www.cisco.com/web/about/security/intelligence/dns-bcp.html http://www.cisco.com/web/about/security/intelligence/dns-bcp.html Structure Domain Name Space

5.  First layer--root domain  Second layer--top-level domain(TLD) – First part –- national top-level domain(NTLDS),such as UK domain, US domain, CN domain, etc. – Second part –- international top-level domain(ITDS).such as COM, NET, ORG, etc.  Third layer –- second-level domain(SLD)  Fourth layer –- sub-domain of the second- level domain  Fifth layer -- host or resource name Source: Domain Name System (n.d.) Retrieved from http://en.wikipedia.org/wiki/Domain_Name_Systemhttp://en.wikipedia.org/wiki/Domain_Name_System

6. Three components: 1. address resolution mechanism 1.recursive resolution. 2.iteration resolution. 2. reverse lookup 3. client lookup Source: Domain Name System (n.d.) Retrieved from http://en.wikipedia.org/wiki/Domain_Name_Systemhttp://en.wikipedia.org/wiki/Domain_Name_System operating

7. A huge sense of business value Two characteristics : – identification – Unique Network mark or global brand “ Creating a good domain name can help the companies having more valuable and market competitiveness.” Source: Domain Names and Trade Marks: what's in a name?(n.d.) Retrieved from http://www.law.ed.ac.uk/it&law/ch4_main.htmhttp://www.law.ed.ac.uk/it&law/ch4_main.htm Value

8. “To date, the UK courts have not to give any detailed consideration as to the precise legal status of domain names. The issue arose in Pitman Training v Nominet [1997] but remained ultimately unresolved as the parties agreed domain names were not property rights and the court made no further observations on the issue.” The principle is “first come, first register” to solve the problem in domain name. Source: Domain Name in the UK- legal status(n.d.) Retrieved from http://www.henmansllp.co.uk/domain_nameshttp://www.henmansllp.co.uk/domain_names Legislation

9. Legal bug for Domain Name System is quite big limitation Domain Name System has unlimited potential in the commercial value Conclusion

10. Thank you

11. Domain Names and Trade Marks: what's in a name?(n.d.) Retrieved from http://www.law.ed.ac.uk/it&law/ch4_main.htmhttp://www.law.ed.ac.uk/it&law/ch4_main.htm Domain Name System (n.d.) Retrieved from http://en.wikipedia.org/wiki/Domain_Name_Systemhttp://en.wikipedia.org/wiki/Domain_Name_System Domain Name in the UK- legal status(n.d.) Retrieved from http://www.henmansllp.co.uk/domain_nameshttp://www.henmansllp.co.uk/domain_names Mockapetri,K.V&Dunla,K.J.Development of the Domain Name System(1988). Retrieved from http://dl.acm.org/citation.cfm?id=52338http://dl.acm.org/citation.cfm?id=52338 DNS Best Practices, Net work Protections, and Attack Identification (n.d.) Retrieved from http://www.cisco.com/web/about/security/intelligence/dns- bcp.html http://www.cisco.com/web/about/security/intelligence/dns- bcp.html Reference