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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35 views

How to remove entries from /etc/resolv.conf?

I have a server configured with a static IP address. /etc/network/interfaces has its respective dns-nameservers and dns-search. But when I run resolvconf -u it gets another nameservers from an unknown ...
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1answer
16 views

Set DNS settings Ubuntu Touch

Is there a way to change the DNS settings in Ubuntu Touch? If it's possible, is it possible to use other DNS settings when connected via 3G than the settings used when connected via WIFI? I cannot ...
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4answers
51 views

Ubuntu 14.04 dns resolution stopped working after minor update

Yesterday the internet connection was working correctly and I accepted software updates.Today I can reach the default gateway, the dns servers (8.8.8.8) but no internet address such as www.google.com ...
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1answer
34 views

Configure DNS for subnet [duplicate]

I have configured my own DNS server and want to make it possible for everyone on the subnet to lookup each other. How do I do that?
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0answers
13 views

Check if DNS-server is correct configured

how do I check if my DNS server is correctly configured? when I do this command without editing /etc/resolv.conf to DNS server's IP host 192.168.0.X I get host X.0.168.192.in-addr.arpa not found: ...
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0answers
13 views

Having trouble getting duckdns to work in 14.04.2 LTS

I'm trying to get DNS working for my odroid-C1 Ubuntu but running into this weird problem, error message saying symbol lookup error but my libjavascriptcoregtk-3.0 package is the newest and greatest. ...
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1answer
28 views

Replacing /etc/resolv.conf

I'm running Ubuntu 14.04 alongside windows 8.1. But in no way could I make the Internet work. I messed up trying to replace the /etc/resolv.conf file and it got removed... I would like to download it ...
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0answers
80 views
+50

DNS Resolution Problem on Ubuntu 14.4 LTS

I have a Windows 8 host machine running VirtualBox and a running a Ubuntu 14.4 LTS Virtual Machine. In the Ubuntu VM, I can access and resolve DNS for every external site (Ex.: www.google.com) and I ...
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1answer
39 views

ISC DHCP Different DNS Server For Different Client OS

Is it possible to configure isc-dhcp in a way that it can send different DNS server addresses to different clients in the network? Let say I have some Macs, PCs with Linux and Windows in the ...
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0answers
27 views

Ubuntu 14.04 no DNS resolv

In my desktop pc with dual boot (Ubuntu 10.04 and Ubuntu 14.04) with the same Network configuration I have access to the internet running 10.04 and after the last update in 14.04, NetwokrManager stop ...
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0answers
44 views

Hosting website and Google App mail under VPS by creating nameservers

I have a domain(from IndiaLinks) and a VPS server(from OVH with an IP). Consider the domain as mysite.com. Before purchasing this vps, I used to host it with shared hosting by adding the given ...
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0answers
16 views

IP addresses of DNS Queries Show Up Backwards in Wireshark

I have been using DNSCrypt with dnsmasq on my Ubuntu 14.10 machine. When running a dumcap via Wireshark, I've noticed a couple of odd occurrences lately. Firstly, after disconnecting from my VPN, with ...
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0answers
19 views

How do I get NetworkManager's dnsmasq to work properly?

I have decided to give Ubuntu another shot, but I am running into some road-bumps after getting it installed. Namely, NetworkManager is not playing well with DNS. I am trying to get networking ...
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0answers
5 views

Possible to access lxc guest containers via DNS?

Assume I have a VPS server available at dev.myserver.com- I would like to be able to run 1 or 2 services from this one server, for example a saltstack service and a Jenkins instance. Now to keep the ...
1
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1answer
83 views

Cant access apache webserver outside/inside local network

I apologize in advance if I use any technical words in the wrong way. I'm still a newbie to Linux/networking Ive been trying to figure out this problem for over a week and none of the related ...
2
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1answer
37 views

DNS not resolving on same network only from outside - 3 days of headache already

I have a domain forwarded to my apache server let's say test.example.com. This works fine outside my home network I can reach it via mobile (4G). But on my laptop I can't reach it. Also I can't ...
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0answers
44 views

browser unable to resolve host

I want to visit some websites, but I always get "unable to visit", unable to resolve the host. I tried ping, and I get: esolve@mypad:~$ ping http://www.santaihu.com/ ping: unknown host ...
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1answer
61 views

DNS broken when logged in via XRDP?

I have an install of Ubuntu 12.04LTS x64 and log into it via XRDP from a Windows PC using Remote Desktop Connection. My problem is that when I try to install software usint package manager or ...
1
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1answer
71 views

Cannot resolve hostname

5 PCs, all running Ubuntu, connected by a wireless to router with DNS. Running an ejabberd server on one of the PCs, and an Apache server on another. PC 1 can only connect to the servers with their ...
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0answers
49 views

DNS can resolve only www.google.it

I have a problem with DNS resolving. While surfing on the internet the computer stops loading pages in a random way, Chromium shows me the "DNS_PROBE_FINISHED_NO_INTERNET" error. I also can't ping any ...
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0answers
33 views

nslookup returns name along with address.in-addr.arpa in suffix

I have configured bind9 in ubuntu 14.04.2 server. While nslookup my address it returns name along with address.in-addr.arpa in suffix. Example: nslookup 192.168.182.10 Server: 192.168.182.10 ...
3
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1answer
36 views

code is still using old IP even though server nslookup showing new IP

I have migrated a site to a new server. When I check DNS checkers online it seems that the domain has propogated worldwide. When I try on the server nslookup www.example.com I get the new IP as ...
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0answers
20 views

Update ubuntu with static DNS

I am trying to set up a machine with Ubuntu where I can not use any connection to a DNS server, and I would like to be able to update the system periodically, but, adding the ip that I get ping-ing ...
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0answers
21 views

Repository MTR strange behaviour:

Can someone explain this MTR readings or that may be a DNS resolver issue. have tried many things changing dns to popular public ones with no changes The first: on does not show the full URL handed ...
3
votes
1answer
54 views

How do you update the DNS resolver configuration without causing downtime?

A note New question, since everything else on this matter appears to be outdated and/or conflicting. Hold your close votes, please :) The problem On stock installs of Ubuntu 12 and 14 Server, the ...
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0answers
64 views

Ubuntu 14.04 DHCP client not updating Windows DNS

We have a set of Windows 2012R2 domain controllers which provide DNS and DHCP service for the network. I have an Ubuntu 14.04 server which is getting addresses via DHCP. This works correctly. In the ...
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1answer
65 views

iptables - redirect DNS queries

I already have the following iptables rules applied in order to masq all of the wlan1 traffic through wlan0. *filter :INPUT ACCEPT [48:6144] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [47:6078] -A INPUT -i ...
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1answer
42 views

How do I change the primary DNS address of my DSL connection in Ubuntu 14.04?

I am using a DSL network connection in my Ubuntu 14.04. There has been set up a primary DNS address of my ISP by default. But I want to use Google Public DNS. I tried to edit the connection by going ...
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0answers
53 views

Can't connect to Samba server by name

I have an Ubuntu 14.04 file server running Samba 4.1.6. The server is a member of a domain with a Windows 2012 server acting as the primary domain controller. I want to connect to it using Windows 7 ...
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1answer
72 views

How to resolve Link Local hosts without typing .local

So in windows, if I typed ping familyroom, it would tell me that my PC in the family room is 192.168.1.61. (DHCP assigned address that isn't in any DNS) I'm running a new install of Ubuntu 14.04 ...
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0answers
52 views

Ubuntu Wifi connection works but no internet

I'm using Ubuntu 12.04.1 LTS. Whenever I start up Firefox it says "server not found" despite the fact that wifi connection seems to be established. I would appreciate if anyone can help — Gabriel ...
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2answers
49 views

DNS stops working after few seconds

When I reboot my Ubuntu 14.04 server (with Zimbra mail system) DNS lookup works a few seconds and then it stops. First I can ping my website but after a minute I cannot, see this: hans@ubumail:~$ ...
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0answers
20 views

Can't Set DNS by DHCP

OS : Ubuntu Server 12.04 After Compile and Install Unbound and depends Library.. resolv.conf always return 127.0.0.1. Files on /etc/resolvconf/update.d not have contain 127.0.0.1 File : ...
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3answers
69 views

How to set up a DNS cache server without port 53

my country, indonesia, is attempting to take over DNS functions in all the ISPs here. thousands of sites including reddit, vimeo, and even (sometimes) github are blocked. now this would not be so ...
0
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1answer
62 views

VMWare NAT configuration

I am trying to run the latest Ubuntu Desktop as a guest inside VMWare Workstation. I need to use NAT for internet access and access to the other Virtual Machines. This works flawlessly on all of my ...
1
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1answer
49 views

Not able to access outside services though Openvpn in brigded bridged mode and routing everything thorugh the vpn

I have setup a small server with a bridged openvpn setup. My goal is use my network services and Internet connection from every location with Internet access. Right now I am just able to use services ...
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0answers
23 views

Changing the hosts file is not working

I am in the processing of migrating a site to a new server. I am currently testing it before actually changing the DNS for that domain. I changed my windows hosts file to point the site to the new ...
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0answers
38 views

Why do SSH passwords sometimes stop working?

On more than one occasion I've messed up so bad the only answer is to reinstall Ubuntu. One of these mess ups is that I do something such that the password to SSH into the machine no longer works. ...
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1answer
379 views

curl --resolve option not working: “Hostname was NOT found in DNS cache”

I am attempting to use curl's --resolve option to connect to the specified IP address when performing the HTTP request, but curl keeps reverting back to the IP address as retrieved by my local DNS ...
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0answers
37 views

Resolvconf doesn't generate nameserver IP when I used openvswitch?

Why can't resolvconf generate dns-server or how to troubleshoot it? root@openstack-controller-01[Standby]:/home/user01# cat /etc/resolv.conf # Dynamic resolv.conf(5) file for glibc resolver(3) ...
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0answers
24 views

dsn server wrong ip address

I am new to setting up a server I have an old desktop running Win XP , so loaded Ubuntu 14.04 LTS server. Installed Apache2 I have a laptop running 14.04 client now I typed 192.168.1.4 in the browser ...
0
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1answer
19 views

Are there DNS leaks with the system proxy setting?

I'm using a system-wide proxy to browse the Internet. Are there any DNS leaks with that?
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1answer
98 views

Postfix, Dovecot mail server can send mails but not recive

I'm new to linux servers and just got myself a VPS from Ovh. Also got a domain though ovh. I have tried to use this Tutorial to set it up. And I guess that somewhere I must have messed up. Have ...
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0answers
39 views

Applications in Ubuntu take forever to resolve URL, webpages usually don't load completely. Internet on other OSs are fine. What's wrong? (14.04)

All the computers in my house are connected to the same router, with the same DNS (googledns). The two Ubuntu machines take forever to "resolve host" (chrome/firefox), but the Windows machines aren't ...
0
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0answers
76 views

problem about setting up unbound with dnscrypt

I tried to set up a local DNS service with unbound and dnscrypt . I set it up and works well . but when I 'm trying to change it to TCP request mode , it doesn't work . the content of unbound.conf : ...
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1answer
166 views

Got SERVFAIL reply from 8.8.8.8, trying next server [ubuntu 14.04 digitalocean ispconfig]

All started with a vps from digitalocean and the following documentation from ispconfig https://www.howtoforge.com/perfect-server-ubuntu-14.04-apache2-php-mysql-pureftpd-bind-dovecot-ispconfig-3 after ...
0
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1answer
45 views

Cannot ping localhost when resolv.conf.d/head modified

I have observed this behaviour since about a week ago, and I don't think I have changed any related configurations. The problem is that when I run ping localhost, I get the following error: ping: ...
2
votes
3answers
176 views

Nslookup resolves search domain but ping does not (14.10) [duplicate]

At my company, many of our configuration scripts, etc use just the server name. For example, http://server rather than http://server.company.com. I have configured the search domain in the GUI Network ...
0
votes
1answer
43 views

unresolved host / Upgrade 12 to 14 Ubuntu/ Net Connection fine through browser

I recently upgraded to 'Trusty' i.e. Ubuntu 14.04. I tried pinging google.com through the terminal. ping google.com ping: unknown host google.com I tried the following: sudo apt-get remove --purge ...
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0answers
76 views

Windows local network access to apache virtual hosts on a ubuntu DNS domain

I have set up a Ubuntu Server machine (14.04) with LAMP, and I have set up a static domain name with bind9 at http://webserv.dev. That domain is showing up when I try to access it from a Windows ...