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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2
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1answer
30 views

Trouble Joining an Active Directory Domain

I'm trying to join an Ubuntu 16.04 server to a Windows 2003 R2 domain by following the Ubuntu SSSD and Active Directory Guide. My admin says that from the controller side, it is part of the domain. ...
14
votes
4answers
14k views

docker.io DNS doesn't work, it's trying to use 8.8.8.8

I have a new Ubuntu 14.04 install, and want to use Docker to run my old stuff that needs 12.04. DNS inside Docker doesn't work. My laptop's resolv.conf looks like: nameserver 127.0.0.1 Which doesn'...
0
votes
2answers
24 views

Can't Add Nameservers 16.04 LTS virtual install

Just did a fresh install of 16.04 LTS in virtual mode on Hyper-V... having trouble getting DNS resolution... Finally got network working by using ifconfig add eth0 10.0.0.1/24, added default gateway ...
8
votes
4answers
3k views

How to reach a host in the same network by hostname?

I have a network which connects a couple of hosts. I would like to be able to reach other hosts from one of them using the hostname. I just discovered the ".local" domain, which is available through ...
0
votes
0answers
11 views

Client Hostname, not FQDN, not IP Address, in Thunderbird headers

When sending email from Thunderbird from behind NAT, the headers contain the local IP address of the client, not the hostname. This is (the result of) what Outlook Express would send: Received: from ...
2
votes
1answer
4k views

Apache - server not resolving by /etc/hosts if I have not internet connection

I have configured many virtualhosts in my current apache2 server, in my local machine (Ubuntu 13.10). Those are different local sites, with domains which are set in my /etc/hosts: 127.0.0.1 ...
1
vote
0answers
20 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
7 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
vote
1answer
34 views

Unable to nslookup deployed nodes on maas server

In the path toward establishment of an Openstack cloud I've already reach to the point that I must install juju and opensatck but the problem is a deployed node does not have access to the internet (...
1
vote
1answer
6k views

Unable to connect to internet using android wifi tethering (hotspot) in Ubuntu 14.04

I'm unable to connect to internet when using android WiFi hotspot (I'm able to connect to hotspot, but not able to access Internet). When I use a WiFi router internet works fine. In chrome I get ...
1
vote
0answers
15 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....
0
votes
0answers
5 views

How can I make OpenVPN run two --up scripts?

Im running uBuntu and I have a OpenVPN connection to my VPN provider and it runs a upscript that starts transmission and a few other things and a --down script that closes it etc. But its leaking DNS ...
0
votes
0answers
8 views

DNS can't reslove hostnames on lan, wrt1043nd

How do I configure DNS server on my router(DNS:94.140.66.250 , 84.20.224.66) so It will be able to resolve local hostnames.
36
votes
10answers
250k views

How do I configure my static DNS in interfaces?

I am using Ubuntu 12.04. My /etc/network/interfaces file consists of: # The loopback network interface auto lo iface lo inet loopback # The primary network interface auto eth0 iface ...
0
votes
1answer
33 views

Using EasyDNS on a dedicated server - stuck

I recently built a dedicated server with Ubuntu 16.04 and the only thing left to do is set the DNS/Nameservers on it to start hosting other domains on it. I'm getting really confused about what to do ...
1
vote
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
votes
1answer
53 views

how to use a router as DNS server? [closed]

While this solution seems to work fine, can I instead just use the NetGear WNR1000v2 - N150 Wireless Router itself as a DNS server? (I had an odd circumstance where the VOIP phone worked fine, but ...
0
votes
0answers
14 views

how can I configure server for dns cache for my ISP

I want to configure server for public users to use my dns sever and my server can cache all ip and domain name to better responsibilies
0
votes
0answers
30 views

bind9 + dhcp clients

I've got a working bind9. I followed this tutorial to setup. It works fine with all static IP, that I fix in /etc/bind/db.* files as tutorial recommends. My router enables DHCP also and there are many ...
0
votes
1answer
56 views

Ubuntu Server DNS/Nameserver setup

I have purchased a dedicated server and had Ubuntu 16.04 installed. I have set everything up that I need, including the firewall and control panel which is server pilot. I plan on using this ...
2
votes
3answers
7k views

No internet connection (DNS server address is Router address)

My internet connection in Ubuntu 13.10 doesn't work. I can use IP addresses to open websites but not URLs. The DNS server that I connect to is the IP address of my Router. When I connect to the VPN of ...
95
votes
7answers
274k views

Command-line to list DNS servers used by my system

Is there a command to list dns servers used by my system? I tried $ cat /etc/resolv.conf # Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8) # DO NOT EDIT THIS FILE ...
0
votes
0answers
26 views

How to setup Dnscrypt with a DNS cache service?

I wanted to setup dnscrypt but the dnscrypt-proxy manpage says I shouldn't run it without a dns cache service like dnsmasq or unbound. As far as I know Ubuntu doesn't have a working dns cache service. ...
0
votes
0answers
24 views

DNS lookup failed

I have an ubuntu VPS running apache2 with all php5 packages, mysql and phpmyadmin installed. I was following a tutorial to set up something and a required command was "a2enmod rewrite". After I ...
0
votes
0answers
45 views

Avahi-daemon keeps disconnecting me from the network [Ubuntu 16.04]

I've been having this problem for a few days where my ubuntu machine was getting disconnected from the network and I finally managed to track down the cause to this: Jun 11 10:40:19 nvidia avahi-...
3
votes
1answer
64 views

Setting Up External DNS and Nameserver Through GoDaddy On a Dedicated Server

I have setup a new dedicated server running Ubuntu 16.04 and Server pilot, Example IP of 111.222.333.444 I purchased a domain through GoDaddy, will call this example.com. I created 2 Hostname ...
0
votes
0answers
16 views

Accessing port forwarded server with domain name instead of IP address

Recently, I set up an Ubuntu desktop 16.04. I want to use it as a web server, FTP server, email server also have SSH access (All this is just for learning purpose for now). I have internet connection ...
0
votes
1answer
68 views

Static DNS in Ubuntu Server 16.04 [duplicate]

I am a complete new-be when it comes to Linux and even more so when it concerns Ubuntu. I want to configure the IPv4 settings to have automatic assigning of IP address but manual assigning for DNS. ...
1
vote
2answers
10k views

Set static IP Ubuntu 16.04

I am a new with Linux, having years experience with Windows servers/desktops and am having issues setting a static IP. I am using a method used for previous versions of Ubuntu, which doesn't seem to ...
0
votes
1answer
92 views

Problem with DNS in the latest Kubuntu 16.04 update

Today I install Kubuntu 16.04, again, because I'm having trouble to navigate. I have tried all kinds of browser, and with all I have the same problem. Sometime when I open a page, I received these ...
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 ...
0
votes
0answers
34 views

External subdomain not resolving

We have a server that runs www.domain.com, which sends e-mail via smtp.domain.com (external). Some time during the last few weeks the server hasn't been able to reach the smtp domain and therefore ...
4
votes
1answer
9k views

Using Ubuntu 14.04 as router with iptables, clients can't go online. Probably DNS issue, iptables setting needed

CORRECTION 3: SOLVED! I needed to add the the official DNS server of my departement's VLAN as DNS to the clients. I've read through a large number of posts about iptables issues when using Linux as ...
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 ...
0
votes
0answers
25 views

University Wifi DNS Problem

I hope you can help me on this problem because this is a major roadblock for me. Also sorry for any typos as I'm doing this via phone. For the summer, I am housing at a university that does not ...
0
votes
2answers
41 views

How intelligent is OpenSSH when it comes to connecting to a domain that leads to your internal network?

I run Ubuntu on my personal machine, and have an network of servers on my local network at my house. I have a cloud server, and a software development server, as well as some others. My servers have ...
0
votes
1answer
100 views

Ubuntu 16.04 multiple NIC, bridge - Not getting br0 DNS settings

After a updated to Ubuntu 16.04 - which has mostly gone very well - everything works except resolving names from the host. Resolv.conf does not pick up dns-nameservers from interfaces (br0) for some ...
3
votes
0answers
82 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
1answer
93 views

Ubuntu ping results in 100% packet loss

I use ubuntu 15.10 and I can ping localhost, gateway (192.168.1.1) and 8.8.8.8 successfully, but I can't ping any other hostname/IP address(outside my network that is). It results in 100% packet loss. ...
0
votes
1answer
5k views

dns configuration problem bind9

Following is my bind9 configuration the domain I want to configure is home.lan it is home network /etc/bind/named.conf.local is following zone "home.lan" IN { type master; file "/etc/bind/...
101
votes
12answers
175k views

How do I clear the DNS cache?

I just updated the DNS record (ns1, ns2, ns3.myhostingcompany.com) for a site I've got hosted, but I still get the domain registrar parking page. I'd like to see if the problem is Ubuntu's cached DNS ...
0
votes
0answers
17 views

Ubuntu 14.04 server DNS in VirtualBox

I installed ubuntu server 14.04 in virtualbox. And I make DNS server. but there is a problem. I confirm my domain name using 'nslookup' command and my virtualbox ubuntu server's ip address. And I can ...
1
vote
0answers
36 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 ...
0
votes
0answers
13 views

Proxy stopped working after setting static IP

I loaded 14.04 LTS from disc. Network Manager set to AUTO. Added proxy to apt.conf. Firefox and apt-get worked fine. Network Manager set to MANUAL. Switched to static IP. Added gateway, name servers,...
2
votes
2answers
55 views

Get current DNS server on 16.04-server

Is there a simple command to find out which DNS server I'm using right now? Preferably without resorting to tcpdump or parsing log files? I found a lot of stuff about nm-cli and other nm-tools but ...
3
votes
0answers
54 views

Windows VS Linux when it comes to Internet [duplicate]

In my home the computers running Windows have no problem connecting to the WiFi we pay. However, my Ubuntu 14.04 fail to connect every 2-3 days. A reset of the router solves the issue, but that's very ...
0
votes
0answers
42 views

16.04 - Unable to resolve local hostnames without FQDN

I have been fighting with this for a few months. Initially could not get anything to resolve until I edited /etc/nsswitch.conf. Now, I can resolve the host.domain.local address, but not just host. ...
1
vote
1answer
44 views

Pointing a domain name to my home web server

So I have a home machine running Ubuntu Server 14.04 running an apache2 server. This machine is also running a Minecraft server. I set up my domain(example.com) host "A" type record with my WAN IP and ...
1
vote
0answers
69 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 ...