Posted on 22 June 2011
Tags: attacker, California, Cisco, clones, denial of service attack, DNS, dns security, DNS server, DNS servers, dns zone data, domain dns, Domain name, Domain Name System, Domain Names, elite levels, foot print, Francisco, google, GTE, Internet Protocol, Internet Service Provider, IP Address, ip addresses, ISP, Jose, Kansas, LAN, Name server, network safety, New Mexico, New York, OpenDNS, park, recursive queries, root system, safety promotion, safety risks, San Francisco, San Jose, Seattle, security reasons, server types, Sydney, Technology_Internet, Texas, united states, Verizon, Washington, website names
Converting website names into IP addresses is the main role the DNS servers. It is for our ease and convenience that human readable domain names have been created. Actually these human readable domains that we type are again changed into IP addresses. So in simple words the fundamental job of the DNS is to convert the domain name into its particular IP address and IP address to its corresponding domain name. Both domain and IP addresses have the same task i.e. to open a website. So accordingly it can be just said that a particular IP address cannot be of more than one domain.
DNS Server Types
Recursive & non-Recursive are the two main types of DNS Servers. In a recursive, the client sends queries and receives complete feedback from the ISP’s recursive DNS Servers. This could also result in engaging the servers. A non-recursive DNS is one which provides a record of the domain without engaging other servers. Recursive server is mostly used at lower level such as in LAN networking. While the non-recursive servers are probably used for elite levels because of a higher number of requests, so that it provides partial results without engaging other servers.
Safety promotion
Using Chroot network is highly recommended for security reasons. Chroot environment is a process that produces a file that clones the main root system so that if an attacker is cracking the network to reach the root system, he cannot damage the whole system, because he has no access to those files which are not on that network.
Safety Risks
There are many issues resulting in the compromising on the DNS Security. Redirection is also a major problem in which an attacker is able to redirect name queries to the DNS servers controlled by him. Flooding one or more DNS servers on a network with recursive queries is a way by which an attacker denies the availability of network services. This is known as Denial of Service Attack. There is a process called foot print in which DNS Zone data could be obtained by the attacker to get information about domain names, computer names and IP addresses.
Advantages of DNS Server
The main advantage of DNS Server is that it is free and fast. One could surf on internet not only safely but also quickly. One can add the DNS domains manually in TCP / IP networks, so it is not only easier but also safer.
Free DNS
When it comes to surf the internet, free and fast DNS Servers are readily available. One can find many free DNS Providers on the internet that could act as a solid rung towards providing the particular DNS server according to requirement. Some of best providers are given below:
disadvantage
- 156.154.71.1
- 156.154.70.1
SpeakEasy (Seattle, WA, US)
- 66.92.159.2
- 216.231.41.2
- 66.92.64.2
- 64.81.111.2
- 66.93.87.2
- 216.254.95.2
- 64.81.45.2
- 64.81.79.2
- 64.81.127.2
- 66.92.224.2
- 64.81.79.2
- 216.27.175.2
- 64.81.159.2
- 66.93.87.2
- 64.81.127.2
- 64.81.159.2 Read the full story
Posted on 23 February 2011
Tags: access, Cisco, comcast, connect, Connection, cord, design, DNS, DNS server, DNS servers, DNS-server books, DNS-server connection problems, Domain Name System, eco, ETA, fast dns servers, Free, GTE, GUI, instructions, Internet Service Provider, IP Address, IT, learn, level-3, links, list, Name server, OpenDNS, ORSC public access DNS, ORSC’s public server, Ovi, performance, server connection, Servers, solution, Sprint link General DNS, tips, upload, US, Use, Verizon, website
It is very difficult to manage and DNS-server. It is quite difficult and can cause many problems to those who are unaware of this server but there are different instructions available on different websites and as well as in different DNS-server books. If a user follows these instructions, there will be no problem in managing a DNS-server. Following are some detail about the DNS-server and related problems.
Connection problem
Comcast is one of the most famous organization that is working against the problems of DNS-server. This organization is providing many useful tips and methods to the users to solve and fix the DNS-server connection problems. Comcast recommends the users to switch on the DNS to fix the problem as it is highly recommended.
Links provided by Comcast
Comcast is providing the solutions related to DNS-server and for this they recommend to follow their instructions and guideline. Comcast recommend following links to learn the solution;
Recommended DNS-servers
There are many DNS-servers. Every server is designed according to different countries. There are many types of DNS-servers like GTE, level-3 and Verizon. These all are too good in their performance and all provides a user, very good and fast speed. Following are the recommended DNS-servers:
- 4.2.2.1
- 4.2.2.2
- 4.2.2.3
- 4.2.2.4
- 4.2.2.5
- 4.2.2.6
ORSC’s public server
Many organizations are also recommending ORSC’s public server. This server is also very fast and good in its speed.
Read the full story
Posted on 18 November 2010
Tags: DNS, DNS entries, DNS server, DNS Tweak, free dns server, how to, how to change dns, OpenDNS
Before we start, we must note that before changing the settings in a DNS server that these settings are for users of following windows
- Windows 2000
- Windows XP
- Windows server 2003
and to add to this fact if one is configured with a router, the router configuration utillity has to be configured in order to change the DNS settings or for further details consult your router’s user manual.
Instruction:
- Right click on the My Network Places icon on the desktop and select Properties.
- If the user is not the classic menu (in windows xp) the icons isn’t available, go to Start menu | My Computer | My Network Places | View Network Connections. Read the full story
Posted on 23 November 2008
Tags: DNS, dns tweaks, Domain Name Service, Domain Names, download, Fiber Optic, Fiber Optic Service, home network, how to, increase dialup speed, increase internet speed, Internet Access, internet browsing experience, Internet Connection, Internet speed using host files, internet speed, IPv4, ISP, Microsoft Vista, Microsoft Windows, Network, OpenDNS, optimize vista speed, prompt and select “ Internet Protocol, secure internet browsing, Sharing Center, tweaks, vista, web browsing experience, webpage load fast, windows, windows vista, xp
Here is a very impressive trick to tweak Windows Vista‘s Internet Speed. This method is very similar to what we discussed in our post titled how to increase Internet speed using host files. The other articles are also very relevant How to Turn On Your PC in Under 10 Seconds , How to Double Firefox Browsing Speed on Dialup Connection and especially How to Optimize Your Internet Connection to Get 100 % Bandwidth
I am also thankful to maria0maria for sharing this with me. I see considerable increase in my Internet speed when I use it in combination of other tricks to make my windows vista work faster. Article starts now…
Even with the FiOS (Fiber Optic Service) connection I still feel that my browsing experience is not that blazing fast. Have you ever felt the same with your internet connection as well? Follow this simple Windows hack to experience a faster, better and secure internet browsing. Read the full story
