Network Security Notes: OpenDNS for Network Security

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Network Security Notes: OpenDNS for Network Security

Well, here this post is related to network security or any security reasons...If you are using OpenDNS, this post would be very useful or important to you...

Yeah, At first you should know what is the DNS???

The Domain Name System (DNS) is a hierarchical distributed naming system for computers, services, or any resource connected to the Internet or a private network. It associates various information with domain names assigned to each of the participating entities. Most importantly, it translates domain names meaningful to humans into the numerical identifiers associated with networking equipment for the purpose of locating and addressing these devices worldwide.

An often-used analogy to explain the Domain Name System is that it serves as the phone book for the Internet by translating human-friendly computer hostnames into IP addresses. For example, the domain name www.example.com translates to the addresses 192.0.32.10 (IPv4) and 2620:0:2d0:200::10 (IPv6).

The Domain Name System makes it possible to assign domain names to groups of Internet resources and users in a meaningful way, independent of each entity's physical location. Because of this, World Wide Web (WWW) hyperlinks and Internet contact information can remain consistent and constant even if the current Internet routing arrangements change or the participant uses a mobile device. Internet domain names are easier to remember than IP addresses such as 208.77.188.166 (IPv4) or 2001:db8:1f70::999:de8:7648:6e8 (IPv6). Users take advantage of this when they recite meaningful Uniform Resource Locators (URLs) and e-mail addresses without having to know how the computer actually locates them.

The Domain Name System distributes the responsibility of assigning domain names and mapping those names to IP addresses by designating authoritative name servers for each domain. Authoritative name servers are assigned to be responsible for their particular domains, and in turn can assign other authoritative name servers for their sub-domains. This mechanism has made the DNS distributed and fault tolerant and has helped avoid the need for a single central register to be continually consulted and updated.

In general, the Domain Name System also stores other types of information, such as the list of mail servers that accept email for a given Internet domain. By providing a worldwide, distributed keyword-based redirection service, the Domain Name System is an essential component of the functionality of the Internet.

Other identifiers such as RFID tags, UPCs, international characters in email addresses and host names, and a variety of other identifiers could all potentially use DNS.

The Domain Name System also specifies the technical functionality of this database service. It defines the DNS protocol, a detailed specification of the data structures and communication exchanges used in DNS, as part of the Internet Protocol Suite.

How about the OpenDNS???

OpenDNS is a DNS (Domain Name System) resolution service. OpenDNS extends DNS adding features such as misspelling correction, phishing protection, and optional content filtering. It provides an ad-supported service "showing relevant ads when we [show] search results" and a paid advertisement-free service.

OpenDNS provides the following recursive nameserver addresses for public use, mapped to the nearest operational server location by anycast routing:

208.67.222.222 (resolver1.opendns.com)
208.67.220.220 (resolver2.opendns.com)
208.67.222.220
208.67.220.222

OpenDNS also provides the following recursive nameserver addresses as part of their FamilyShield parental controls which block pornography, proxy servers, phishing sites and some malware:

208.67.222.123
208.67.220.123

IPv6 addresses (experimental)

2620:0:ccc::2
2620:0:ccd::2

OpenDNS for Network Security: Watch video below to know details for the network security with OpenDNS...

Other sites you may want to see:

WWE: http://visa-wwe.blogspot.com/
The Kingdom of Wonder: http://welcome2cambodia.blogspot.com/
Daily Blogging: http://visablogging.blogspot.com/
Love Sharing: http://visa-love.blogspot.com/
NetworkSecurity: http://networksecuritynotes.blogspot.com/
About Insurance:http://visa-insurance.blogspot.com
All about Love: http://visa-love.blogspot.com/
Learning English Online: http://visa-elb.blogspot.com/
Discovery Internet: http://visa-isp.blogspot.com/

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