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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avahi-daemon

avahi-daemon(8) 					      System Manager's Manual						   avahi-daemon(8)

NAME

       avahi-daemon - The Avahi mDNS/DNS-SD daemon

SYNOPSIS

       avahi-daemon [options]

       avahi-daemon --kill

       avahi-daemon --reload

       avahi-daemon --check

DESCRIPTION

       The Avahi mDNS/DNS-SD daemon implements Apple's Zeroconf architecture (also known as "Rendezvous" or "Bonjour"). The daemon registers local
       IP addresses and static services using mDNS/DNS-SD and provides two IPC APIs for local programs to make use of the mDNS	record	cache  the
       avahi-daemon  maintains. First there is the so called "simple protocol" which is used exclusively by avahi-dnsconfd (a daemon which config-
       ures unicast DNS servers using server info published via mDNS) and nss-mdns (a libc  NSS  plugin,  providing  name  resolution  via  mDNS).
       Finally there is the D-Bus interface which provides a rich object oriented interface to D-Bus enabled applications.

       Upon  startup  avahi-daemon  interprets	its  configuration  file /etc/avahi/avahi-daemon.conf and reads XML fragments from /etc/avahi/ser-
       vices/*.service which may define static DNS-SD services. If  you  enable  publish-resolv-conf-dns-servers  in  avahi-daemon.conf  the  file
       /etc/resolv.conf will be read, too.

OPTIONS

       -f | --file= FILE
	      Specify the configuration file to read. (default: /etc/avahi/avahi-daemon.conf)

       -D | --daemonize
	      Daemonize after startup. Implies --syslog.

       -s | --syslog
	      Log to syslog instead of STDERR. Implied by --daemonize.

       --debug
	      Increase verbosity to debug level.

       --no-rlimits
	      Don't enforce resource limits as specified in the configuration file. (See setrlimit(2) for more information)

       --no-drop-root
	      Don't drop root privileges after startup and don't require daemon to be started as root. We recommend not to use this option.

       --no-chroot
	      Don't chroot(2) the daemon. This option is only available when compiled with chroot() support.

       --no-proc-title
	      Don't  change  the  process  name while running. Unless this option is specified avahi-daemon will reflect its current state and the
	      selected host name in the process title.

       -k | --kill
	      Kill an already running avahi-daemon. (equivalent to sending a SIGTERM)

       -r | --reload
	      Tell an already running avahi-daemon to reread /etc/resolv.conf (in case you enabled publish-resolv-conf-dns-servers  in	avahi-dae-
	      mon.conf)  the  files from /etc/avahi/services/. Please note that this will not reload the /etc/avahi/avahi-daemon.conf. (equivalent
	      to sending a SIGHUP)

       -c | --check
	      Return 0 as return code when avahi-daemon is already running.

       -h | --help
	      Show help

       -v | --version
	      Show version information

FILES

       /etc/avahi/avahi-daemon.conf: the default configuration file for avahi-daemon, avahi-daemon.conf(5) for more information.

       /etc/avahi/hosts: additional static hostname mappings to publish in mDNS, see avahi.hosts(5) for more information.

       /etc/avahi/services/*.service: static service definitions, see avahi.service(5) for more information.

SIGNALS

       SIGINT, SIGTERM: avahi-daemon will shutdown. (Same as --kill).

       SIGHUP: avahi-daemon will reload unicast DNS server data from /etc/resolv.conf and static service  definitions  from  /etc/avahi/services/.
       (Same as --reload)

       SIGUSR1: avahi-daemon will dump local and remote cached resource record data to syslog.

AUTHORS

       The Avahi Developers <avahi (at) lists (dot) freedesktop (dot) org>; Avahi is available from http://avahi.org/

SEE ALSO

       avahi-daemon.conf(5), avahi.hosts(5), avahi.service(5), avahi-dnsconfd(8), avahi-set-host-name(1)

       http://avahi.org/wiki/AvahiAndUnicastDotLocal documents the problems when using Avahi in a unicast DNS zone .local.

COMMENTS

       This man page was written using xml2man(1) by Oliver Kurth.

Manuals 							       User							   avahi-daemon(8)