Tier 2 list Post: 302949686

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Special Forums IP Networking Tier 2 list Post 302949686 by bakunin on Tuesday 14th of July 2015 11:52:43 AM

07-14-2015

Registered User

Quote:

Originally Posted by 1in10

May someone give me a hint, or got experience about using as default dns one of the so called TIER 2 list?

DNS is a distributed and hierarchical database: and whereever there is a hierarchy you need to have one (or several) "roots". These are the "tier-1-servers". To prevent flooding them with requests (which would make the DNS system slow overall) many organisations (including Google) have built "tier-2-servers" and offer their services to the public in various ways:

there are companies like OpenDNS which create some revenue redirecting you to a site they get money from under certain circumstances (like "host not found", etc.)

there are companies like Google which seemingly offer their service without any payment but they keep your DNS requests in a database and so over time know your surfing habits, which is marketable information

there are companies trying to restrict what you should see by denying name resolution for sites they think you should not see. Many of the DNS servers ISPs offer fall into this category but also Norton ConnectSafe and many other "safe" installments (note: "safe" just means "arbitrarily incomplete")

In light of this i suggest to use two nameservers from two different providers and only use providers which do not filter anything. My personal opinion is that i know best what i should see and if a website doesn't fall into that category i just avoid it. Seeing something i do not want to see for as long as it takes me to decide that won't kill me.

I use "censurfridns.dk" ( 89.233.43.71, 91.239.100.100), which is located in Denmark and it works to satisfaction. There are similar services in Austria ("FreeDNS", 37.235.1.174, 37.235.1.177) and probably some others you might find.

I hope this helps.

bakunin

bakunin

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ipa-dns-install

ipa-dns-install(1)						 IPA Manual Pages						ipa-dns-install(1)

NAME

       ipa-dns-install - Add DNS as a service to an IPA server

SYNOPSIS

       ipa-dns-install [OPTION]...

DESCRIPTION

       Adds DNS as an IPA-managed service. This requires that the IPA server is already installed and configured.

OPTIONS

       -p DM_PASSWORD, --ds-password=DM_PASSWORD
	      The password to be used by the Directory Server for the Directory Manager user

       -d, --debug
	      Enable debug logging when more verbose output is needed

       --ip-address=IP_ADDRESS
	      The IP address of the IPA server. If not provided then this is determined based on the hostname of the server.

       --forwarder=FORWARDER
	      A  forwarder  is a DNS server where queries for a specific non-resolvable address can be directed. To define multiple forwarders use
	      multiple instances of --forwarder

       --no-forwarders
	      Do not add any DNS forwarders, send non-resolvable addresses to the DNS root servers.

       --reverse-zone=REVERSE_ZONE
	      The reverse DNS zone to use

       --no-reverse
	      Do not create new reverse DNS zone. If used on a replica and a reverse DNS zone already exists for the subnet, it will be used.

       --zonemgr
	      The e-mail address of the DNS zone manager. Defaults to hostmaster@DOMAIN

       -U, --unattended
	      An unattended installation that will never prompt for user input

EXIT STATUS

       0 if the installation was successful

       1 if an error occurred

IPA
								   Jun 28, 2012 						ipa-dns-install(1)