Domain Name System for computers, services, or any resource connected to the Internet. 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.

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3
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86 views

Why Google ping (DNS server 8.8.8.8) in windows is faster than ubuntu 16.04 and Other Linux distribution?

I've read all the solutions regarding to similar problems existing in all the community and I've performed these options but none of theme work! I've checked the google ping both in linux and windows ...
3
votes
0answers
316 views

cat: /var/lib/misc/dnsmasq.leases: No such file or directory

I've searched all over the internet, but couldn't find any answers of my problem.. I want to connect my Raspberry Pi to my laptop. But whenever i try to check the ip address of my raspberry, i get ...
3
votes
0answers
1k views

Why would having multiple nameservers in resolv.conf cause nslookup to fail, but a single entry work?

I have a resolv.conf on ubuntu 12.04 that looks like this (IP addresses have been changed to nonsense): search internal.mydomain.com nameserver 205.169.169.193 That nameserver is not authoritative ...
3
votes
0answers
465 views

DNS servers not correctly set in VPN

I have to use an OpenVPN network to work from home, and I occasionally have problems getting DNS to resolve. The problem comes and goes, and I can't reproduce it reliably. I took the OpenVPN config ...
2
votes
0answers
14 views

postfix 2.11, cannot receive emails from specific domain

helo, I am over 3 days now working on a solution. Our server is getting emails normally from around the world, except from one domain(our ISP free emails server domain). It would not be a problem but ...
2
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0answers
69 views

Websites not loading in Ubuntu in both chrome and firefox

I am running ubuntu 14.04 and i am using a DSL Connection.From last few days i am having problem in loading some websites like ubuntuforums, hackerrank, mdn etc. I have tried alsmost all solutions ...
2
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0answers
37 views

painfuilly slow windows clients using bind on 14.04

I'm very new to Ubuntu (though I've installed 14.04 server a dozen times now) and Linux and I'm trying to replace my Win2003 server with Ubuntu 14.04 server. I have a brand new shiny HP Gen8 box and a ...
2
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0answers
302 views

bad dotted quad / DNS

I am trying to redirect a DNS to my VPS (Ubuntu Server 14.04). I am trying to configure the zones of bind. But I have an error I can't fix ... Any Idea ? toto@serveurVPS:/etc/bind/zones# named-...
2
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0answers
124 views

Why isn't NSS using mDNS?

I have a machine that is unable to resolve hostnames over mDNS: ### mDNS is working $ avahi-resolve -n foo.local foo.local 1.2.3.4 ### NSS is configured to use mDNS $ grep ^hosts /etc/nsswitch....
2
votes
0answers
338 views

How to configure dynamic DNS for IPv6 using bind and isc-dhcp-server

I have a ubuntu 14.04 LTS machine created in VirtualBox which I could configure IPv4 delegation via isc-dhcp-server. Then by follow this great tutorial, I could configure such machine to also update ...
2
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0answers
3k views

getting openconnect vpn to work through network-manager

this is the same issue as here: Getting openconnect vpn to work through gui , but my additions to it were deleted and i was asked to create a new question. in fact, there are a number of folks asking ...
2
votes
0answers
100 views

error insserv with script

I try to install Unbound with the following website: http://www.unix-tutorials.com/go.php?id=3681 I copied the script : #!/bin/sh # # unbound This shell script takes care of starting and ...
2
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0answers
259 views

How to configure Ubuntu Server to point to my registered website's domain?

First off, I'm aware that it's a possibly a duplicate, but what happens is that no matter what I try to google, read, and setup, I'm just unable to fully understand how to do it. Why? Let's take "...
2
votes
0answers
252 views

Understanding ssh - apparent IP address: dynamic vs local port forwarding

I have ddwrt on my router back home and I'm playing with ssh on my laptop from a remote location to better understand ssh. My router has port 5000 listening for incoming ssh which it port forwards to ...
2
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0answers
620 views

Both named and dnsmasq serving DNS on port 53?

Is this considered normal for Ubuntu 14.04 ? netstat -tulpn shows that both bind9 (named) and dnsmasq serve on port 53: Active Internet connections (only servers) Proto Recv-Q Send-Q Local Address ...
2
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0answers
567 views

Ubuntu 14.04 - Network problems (wireless and DNS)

I have seen a very similar problem on post: Cannot resolve dns on 12.10 install but with no clear answer and my problem is related to Ubuntu 14.04, another particularity is that this problem started ...
2
votes
0answers
305 views

dig +trace returns my DNS IP

When I'm trying to execute dig +trace command, output is the following: $ dig +trace google.com ; <<>> DiG 9.9.5-3-Ubuntu <<>> +trace google.com ;; global options: +cmd ;; ...
2
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0answers
647 views

Ubuntu 12.04 Cannot connect to Starbucks Free attn Wifi, DNS issue

first off, I'm a bit of a newbie and networking stuff is not my forte. So I've been pulling my hair out for the last hour trying to get my 12.04 Ubuntu partition to connect to an AT&T hotspot in ...
2
votes
0answers
2k views

With MAAS set to manage DNS on a subnet on a private IP range, why do only some nodes have DNS entries?

I'm trying to set up OpenStack on MAAS, using trusty. I have a network between these machines all bridged/switched together. I have set up MAAS at 192.168.7.200, I have a Juju client machine at 192....
2
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0answers
3k views

How do I set up a reverse dns on Ubuntu 12.04 VPS

As far as I can remember when setting up my VPS and mail server on it, I had configured the mail server correctly. However, a few of my clients get SMTP errors, host mx1.zonnet.nl[62.58.50.9] ...
2
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0answers
154 views

How to access Amazon EC2 instance from Ubuntu 13.10?

I have an Amazon EC2 (Windows) instance which has been created for me and I have public DNS, public IP and the public key. I would like to RDP to this instance from Ubuntu 13.10. I have recently ...
2
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0answers
929 views

How to host a website using Ubuntu 13.04 on my local machine

How do I do a complete BIND9 DNS Server Configuration with a hostname? Thank You so much for this wonderful answer. Although the talk here had been more on the lines of setting up a home based server ...
2
votes
0answers
338 views

MaaS dhcp cannot be detected at node installation

I am installing a MaaS Ubuntu 12.04 by ISO with virtualbox as the host machine. I have a problem on the cluster management during the process of adding the node. The node cannot detect the dhcp ...
2
votes
0answers
281 views

Ubuntu FQDN Not pingable on Windows Network

My problem is that my Ubuntu machine seems to have its FQDN setup correctly, yet I cannot ping the FQDN from a windows machine on the same network. Output of various commands on my Ubuntu machine: ...
2
votes
0answers
652 views

I am unable to use internet in no proxy mode

I am using Ubuntu 10.04 (installed using Wubi in Windows 7) and when I change my proxy settings to no proxy (without any proxy server), I am unable to access any page (using Firefox or Google Chrome) ...
2
votes
0answers
2k views

Postfix cannot resolve local IPs from Name Server

I currently have a server running "Ubuntu Server 12.04.1 LTS" installed with Postfix Bind 9 (Slave) The postfix cannot seem to resolve my internal IPs to Name Server (PTR) entry I have within ...
2
votes
0answers
822 views

How do I get rid of OpenDNS?

Some months ago I set up OpenDNS. Since then, occasionally I get slow page loads and pages that redirect to a timed-out opendns page. I would like to see if removing OpenDNS will make browsing ...
1
vote
0answers
12 views

What is my DNS mis-configuration in docker?

I recently installed docker on my ubuntu 16.04. I pulled and run hello-world, ubuntu and sinatra images sucessfully, but they cannot connect to the internet I think!! Example the following errors ...
1
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0answers
22 views

How to setup DHCP relay in ubuntu?

I am new in Linux, so please ignore if my question is silly. I am setting up 4 machines. Two machines are the servers and two are client computers for testing purposes. I am using my Ubuntu machine as ...
1
vote
0answers
10 views

Google Domains DDNS with DDclient on Ubuntu

Evening everyone, I asked the same question on stack overflow here however it has been a several days and almost no views and no hints. I am using ddclient to update google domains with my ip. ...
1
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0answers
16 views

DNS is not working

When I am trying to nslookup the www.google.com from my server it is not getting resolved. But when I am providing DNS IP, after nslookup command it is getting resolved. [root@XYZ ~]# nslookup www....
1
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0answers
19 views

Can't Set Static IP - Ubuntu 14.04.03 - Server

I am configuring a few servers all with the same basic configuration. We first set the DNS/Domain in /etc/resolvconf/resolv.conf.d/base cat /etc/resolvconf/resolv.conf.d/base domain domain.com ...
1
vote
0answers
25 views

Opendkim key not found

I've been trying to setup DKIM on my VPS with the help of this article, but when I test the installation, I get a opendkim-testkey: No key Below the config files: /etc/opendkim.conf # This is a ...
1
vote
0answers
47 views

nameserver problem for internet connection

I installed ubuntu 16.04 on a HP labtop. Right now, I can get access to wifi. For instance, ping 104.16.33.249 will return as PING stackoverflow.com (104.16.33.249) 56(84) bytes of data 64 bytes from ...
1
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0answers
37 views

Why does DNS resolution not work on the first try?

Ever since upgrading to 16.04, DNS resolution fails (returns Host Not Found) on the first attempt for any website. I can then immediately try it a second time and it works just fine. A little ...
1
vote
0answers
74 views

How to specify additional search domains for resolver in 16.04 when using DHCP?

With Gnome Ubuntu 14.04, it was possible to specify additional search domains for the resolv.conf, when editing a network connection, like so: But where do I find this field for the "additional ...
1
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0answers
57 views

16.04 XUbuntu - OpenVPN losing DNS after a couple minutes

Stock install of Xubuntu 16.04. Followed this guide to install OpenVPN for Network Manager, and to download the certs and opvn files for PIA VPN: https://www.privateinternetaccess.com/forum/...
1
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0answers
21 views

Username & Host Name are Screwed on Terminal

I have been working on my machine to setup a web server. At a certain point, I noticed my username & host name displayed at the very beginning of each line of terminal commands are different from ...
1
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0answers
49 views

I can browse any website except of Facebook and Youtube

I have Ubuntu and archlinux running on different boxes. Along with and Android phone. which i can't open Facebook or Youtube in the browsers (Firefox, Chrome). Error message: Server not found. I can ...
1
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0answers
70 views

OEM install asking for nameservers after oem-config-prepare

I'm trying to create an install image of server 15.10 that I can deploy to a few dozen machines by running through the OEM install, customizing packages and settings, then running "oem-config-prepare"....
1
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0answers
48 views

Laptop DNS broken after use on another network

I have a laptop running Xubuntu 12.04 Desktop 32bit. It was a clean install about 3 years back. I took it abroad recently and used it on somebody else's network. I was getting intermittent name ...
1
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0answers
36 views

Resolve domain names to IP's based on physical adapter

System Configuration eth0 NIC to the LAN/WAN/Internet (working, don't want to mess with it) eth1 NIC eth2 NIC Objectives Assign a static IP to eth1 and eth2 and assign IPs (DHCP) on separate ...
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0answers
34 views

Cannot Connect to Network checked /etc/network/interfaces

I am trying to connect to the network on a ubuntu server 14.04 on a laptop. Pinging to google.com gives unknown host google.com pinging to 8.8.8.8 gives Network is unreachable /etc/network/interfaces ...
1
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0answers
90 views

System freezes during boot after failed upgrade

I was running an upgrade from Ubuntu 15.04 to 15.10. About 80% of the way through KDE crashed and the system became unresponsive. I restart and now the system hangs during boot and I am unable to drop ...
1
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0answers
57 views

Can't set the openVPN without dns leaks

I found that I have leaks when I set my VPN through Terminal. I found couple thread and tried to use this method - How can you test for a DNS leak for an OpenVPN provider? I made everything, when I ...
1
vote
0answers
98 views

Using pushed DNS from OpenVPN with NetworkManager on Trusty Tahr

My company provides me a VPN connection that also hosts a DNS server for names that are internal to the VPN. Currently, it sets all my traffic to route through the VPN, which works but is undesirable. ...
1
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0answers
633 views

network state DNS_PROBE_FINISHED_NO_INTERNET

Recently I bought a Hp pavilion 15 Notebook. Okey the problem is that when I'm on the internet afterba while of being connected, the pc leave receiving the signal of the Modem, and appears this error....
1
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0answers
91 views

Static IP working slow in Ubuntu 15.04

In ubuntu 15.04 I have, in order to have a static IP in my LAN, updated /etc/network/interfaces to: auto lo iface lo inet loopback auto eth0 iface eth0 inet static address 192.168.1.140 netmask 255....
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0answers
100 views

DNS server testing and configuration

You are required to configure and test a DNS server. Configure a DNS server with both forward and reverse lookup. You should configure a domain name zone of .itc514.edu, and a reverse name mapping ...
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0answers
435 views

dnscrypt-proxy - find the best DNS resolver and update the dnscrypt-resolvers list

I have installed dnscrypt-proxy and the default resolver I have is: resolver1.dnscrypt.eu. Is it possible to find the fastest DNS resolver from the list here: Also I have installed the program from ...