computer networking

Is OpenNIC a reliable DNS service?

A computer networking DNS questionI was asked the question, "Is OpenNIC a reliable DNS service?" As a systems administrator on a private network, being able to create and customize a DNS server adds some management features that would not apply to the average home based web surfer.

This question was asked with the reason for using OpenNIC is to add an extra layer of privacy to your web browsing. The belief, or perhaps paranoia, is that DNS servers are able to log your requests, and by doing so they have a record of sites you have visited. The question is asked in the context that your DNS provided by your ISP is a source to track where you have been on the internet, and by using an alternative DNS service that eliminates that extra potential layer of tracking, thereby creating more privacy.

If you want to start playing around with alternative DNS solutions you need to understand the risks as well as the benefits.

First let's take a quick look at the definition of DNS (Domain Naming Service)

  • DNS is a distributed database of Domain Names and their corresponding IP Addresses.
  • DNS makes it possible to attach hard to remember IP addresses to easy to remember domain names
  • DNS translates between meaningful host names and IP addresses. It is a hierarchical naming system used to give each server on the Internet a unique name.
  • DNS keeps a complete listing of all FQDNs (Fully qualified domain names) and their associated IP address.

Home computer networks explained Wi-Fi and wireless access points

Wireless home computer networking from WAPs to Wi-Fi Setting up your home network can get confusing as street slang dominates many forums and internet discussions.  Just about any plastic box with wires coming out of it is often called a modem or a router, in reality it may be neither.

Here at the Guru42 Universe we will do out best to sort through all the geek speak.  It is important to have a basic understanding of all the buzzwords when you are setting up your home computer network.  Depending on your Internet Service Provider and the service you are buying, the device they supply will vary and what you need to connect is not a one size fits all answer.

Your ISP (Internet Service Provider) may provide you with a "residential gateway" that allows you to connect to the internet. You then purchase an internet appliance that is often called a "wireless router" to attach it.  People get confused because many small technology appliances made for home use are actually several devices in one.  One of my pet peeves on is when people use the term "wireless router" to describe a variety of devices. Typically what most people call a wireless router is a combination of a router, a wireless access point, and a network switch.

The evolution of the Internet and the birth of TCP/IP

During the 1970s Bob Kahn and Vinton Cerf would collaborate as key members of a team to create the building blocks of the modern internet TCP/IP.The creation of the protocol suite TCP/IP as the basic set of rules for computers to communicate was one of the last major phases in the development of this global network we now call the Internet.

The internet was not something born of a single idea, but rather a gradual evolution, and the work of many people over many years.

The idea started with a vision to create a decentralized computer network, whereby every computer was connected to each other, but if one member of the systems was hit, the others would remain unaffected.

From the initial idea of a decentralized computer network came the concept of packet switching. During the 1960s Paul Baran developed the concept of packet switching networks while conducting research at the historic RAND organization.

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