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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Recursive query in Bind

I want to setup a recursive DNS server with bind and don't want to forward queries to another DNS servers.(every query be recursive) How to setup it? Thanks.
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181 views

Ubuntu Server 14.04.3 NAT DNS Configuration

I have a Ubuntu Server 14.04.03 configured as a NAT Gateway using ISC-DHCP-Server. There are around 50 client PCs that access the internet through it, most of them running Windows. I want to use the ...
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2answers
450 views

How do I allow DNS through interface filtering using iptables in Ubuntu Headless

I've seen some questions referring to static DNSs, openVPN server pushes etc, but none of them really apply or they require GUI tools and I am using a headless Ubuntu Core that I SSH into. root@...
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1answer
208 views

resolvconf Error when running dhclient in recovery mode

when I go to recovery mode and I want to activate networking, I usually type: dhclient eth0 After this, I can for example ping to www.google.com. However, I get the following error: RTNETLINK ...
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165 views

Bind9 nor working - SERVFAIL Ubuntu 14.04

Hi I have an issue trying to configure my Bind9 service. here the result of dig command: ; <<>> DiG 9.9.5-3ubuntu0.5-Ubuntu <<>> smx.local ;; global options: +cmd ;; Got ...
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72 views

VPN with openDNS issue?

So I had a DNS leaks and I decided to fix that. Im using ra4wvpn, and openDNS (I configured only my machine, not the router if this is important info). When I'm without the VPN I have no problems. I ...
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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 ...
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2answers
147 views

How to edit /etc/hosts file [duplicate]

How to you edit the /etc/hosts file? My father put every video site on the internet on and he won't tell me how to get rid of it. I need an answer because tinypic and youtube are on it!
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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. ...
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18 views

Please explain the difference in nslookup replies

When I choose my ISP's nameserver and do this: set q=ns . then in ADDITIONAL section I can see root servers IP's. When I perform the same check on my BIND, I don't get to see the IP's. Not like it ...
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1answer
137 views

14.04 - DUC doesn't update correctly the IP with VPN at startup

I'm running an Ubuntu 14.04.3 LTS server that launches a few things at startup, two of them being OpenVPN for my VPN service and a Dynamic DNS Update Client to update my noip host to my current IP. I'...
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384 views

Resolving Host in All Browsers

I'm a Linux newbie having serious connection problems in Ubuntu 15.04. Seemingly at random, all internet-related functions of my laptop stop working. Both Firefox and Chrome get stuck on "resolving ...
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1answer
529 views

/var/run/dnsmasq/resolv.conf nameserver contents

Xubuntu 15.10 using Ethernet From my understanding, /var/run/dnsmasq/resolv.conf should contain the nameservers used by dnsmasq to resolve addresses and is configured by a script called by network-...
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631 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....
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1answer
128 views

dnsmasq resolver on different port

Im trying to use dnsmasq in conjunction with dnscrypt. I can't get dnsmasq to work with a server being a local address / non dns port. Is this possible? I've tried setting dnscrypt to 127.0.0.1 192....
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1answer
55 views

How to setup bind9 as simple name resolver?

What? I want to setup my own dns resolver. For everything that is not in 192.168.178.0/24 forward it to google dns (8.8.8.8 and 4.4.4.4 as fallback). So I just want to setup the nameserver of every ...
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0answers
36 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 ...
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93 views

High packet loss on Ubuntu 12.04.5 with working router

I am unable to connect to the internet on my Ubuntu 12.04 box using DHCP with a reserved IP address. There are a few facts that make this particularly mysterious: The router formerly seemed to ...
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110 views

Wired/Wireless connects and disconnects repeatedly

What I have tried: First thing I did was remove Ubuntu 15.04 and did a clean install via USB of Ubuntu 14.04. (Note: on all other computers that I have installed Linux on the network has started ...
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80 views

Ubuntu 14 - static IP - Connected but no internet

I have Ubuntu dual-booted and windows 7. The ethrenet connects not problems on windows 7 and a few days ago it was working fine on Ubuntu. I was and am using a static IP. I thought maybe a driver ...
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1answer
1k views

14.04 Resolving Host (DNS) Problem

EDIT: Problem solved with 16.04. I have an Asus Zenbook UX32V. I installed Ubuntu 14.04 and now I cannot browse the Internet. When I connect to a wireless network everything is fine for 2-3 minutes ...
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200 views

How should I configure DNSMASQ for an IPv6 environment?

Id like to deliver IPv6 addresses (thats easy) and resolve DNS requests for Internet and local IPv6 clients (that's difficult), but I'm missing a comprehensive guide how to do this with DNSMASQ. There ...
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11 views

Is routing and maquaridng with virtual intfaces possible?

I'd like to connect two subnets by an Ubuntu server, but the machine has only one Ethernet adapter. The server should provide DHCP and DNS cache for the internal network by DNSMASQ. I'm not able to ...
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55 views

Name resolution not working

Installed Ubuntu 14 desktop a few months ago, in a dual boot environment. Everything was working fine till yesterday: accessing shared folders/files on windows/linux, browsing, printers, etc. Then I ...
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28 views

How to use DNS instead of /etc/hosts? [duplicate]

In /etc/hosts, I can for example input 127.0.0.1 example.com Now I have a nameserver (pdns with postgre-backend), which I want to use in the intranet. So, I tell my dns server, that example.com ...
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17 views

How to setup authenticaton for a DNS server with database users

can any one help me out here, I'm trying to setup a DNS server with authencation so that only ip address of database users will be allowed to use my Private DNS server. Thank you
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1answer
75 views

DNS goes missing with Static IP via NetworkManager

I know there's plenty of posts/threads/questions/tutorials regarding ubuntu's DNS, network manager innards, and changes in the like between versions ~12 to 14-15+. I'm on ubuntu 12.04, and looking to ...
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78 views

EZ-IPUPDATE behind NAT

I have my server behind a cable router which NATs everything at home. My router only works with dyndns, which does not have a free option, and my DNS is Zoneedit. I configured ez-ipupdate, but it ...
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1answer
108 views

Postfix doesnt know own hostname

in my postfix logs I often see that postfix failed to send an email to root@levinus [my hostname] because theres no DNS record for levinus. But in my /etc/hosts is an entry for levinus (--> 127.0.0.1 ...
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1answer
127 views

How do I prevent domains from resolving to a specific address?

When I misspell a domain name, the DNS servers of my ISP provider resolve the domain name to an IP address of a web server that tells you "we're sorry, the address you typed does not exist" together ...
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2answers
141 views

Do you really need to remove DHCP clients for static IP to stick?

The instruction from this link works to change from DHCP dynamic IP to static. But there's a step where it says: You need to also remove the dhcp client for this to stick (thanks to Peter for ...
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1answer
783 views

Cannot access Ubuntu web server site from outside network

So I've set up a LAMP web server on Ubuntu 14.04 server distro and installed owncloud as well as wordpress on it. It's connected to the web via ethernet and connectivity is good as far as I can tell (...
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20 views

lubuntu networking

I have installed lubuntu latest version in my network systems which have 15 systems, problem is when I open my crm page in any of the system only one system get connected to it, remaining systems doen;...
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2answers
410 views

Can I run a Ubuntu and Windows DHCP / DNS Server together in the same network?

I am just wondering if I can run both windows and Ubuntu DHCP/DNS Server in the same LAN. The Present configuration is Windows 2003 Server AD and Ubuntu DHCP n DNS Server with BINDS. I have proposed ...
2
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2answers
596 views

change DNS server in a non-persistent way (on the command-line) [ubuntu 14.04 - rescue mode]

is there a way i can change the DNS server on the command-line without having to change anything on the disk? i recently booted into the rescue session and i got an IP address (using DHCP) but no DNS ...
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22 views

would a DNS server help users find my web inside LAN [duplicate]

I have a linux box that works as a server and connects only to a LAN network, with the rest of its clients. If I type the IP address of the linux comp on any client's browser I land on this ("internal"...
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22 views

Google Properties don't load on my work network; other sites do

Often, when my laptop is on my work network, some Google properties don't load in FF. The search bar doesn't autopopulate results, navigating directly to www.google.com doesn't work, etc. I haven't ...
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1answer
79 views

make LAN clients find my website through a URL

I have apache2 installed and running. I've been fiddling with the configuration files and also found this: https://httpd.apache.org/docs/2.2/vhosts/examples.html that website I just pasted there says ...
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1answer
388 views

Why won't DNS resolve?

I can't use git clone or even apt-get install because I get a "cannot resolve host" error. They were working before, but I have no idea what changed that broke the DNS resolve. I can't find any ...
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1answer
161 views

freshclam warning: “DNS record is older than 3 hours.”

I recently ran the command: sudo freshclam And this was the output: ClamAV update process started at Mon Sep 28 18:45:04 2015 WARNING: DNS record is older than 3 hours. WARNING: Invalid DNS reply. ...
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35 views

Web server & ICMP question

Im am very new here in askubuntu.com and pretty new to ubuntu server system. at our church we have a ubuntu control server which is in charge of internal network(DHCP) and all that related. the ...
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29 views

Ping out but not ping in

I can ping my own ip address and google but none of the host names will work. Does anyone have any advice? this is what it looks like and my DNS is up and running root@ns1:/etc/bind# ping google.com ...
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98 views

how to points my domain name server to my local ubuntu pc?

I have bought one domain now i want to host my website locally in ubuntu desktop as long as my pc gets on my website would run if shuts same and vice versa. So for that i need to configure my domain ...
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1answer
299 views

DNS leak test shows other Google ISPs when I use Google 8.8.8.8 and 8.8.4.4 nameservers

I am trying to fix a DNS leak. I have changed the nameserver settings to use Google's 8.8.8.8 and 8.8.4.4 public DNS servers. However, if I run a DNSleak test it lists the following servers: 74.125....
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1answer
49 views

DNS not resolving Seattle University network

Seattle University doesn't provide any support for linux, although my Android phone appears to work fine. I am able to connect to both the encrypted and unencrypted wireless networks, as well as wired,...
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1answer
371 views

Chrome and Firefox can not resolve the same host name, dig can

Ubuntu 14.04. I am on a local domain, xxx.local. From the terminal I can use dig and host to lookup many names served from our local dns servers like zzz.yyy.xxx.local. When I type that same host ...
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1answer
457 views

Reduce ntpdate timeout when DNS settings invalid?

I have an issue where ntpdate times out after exactly 80 seconds in the event that DNS is invalid (or in this case, host is stuck behind a firewall). I would like to bring this timeout down to ...
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1k views

Why “hosts:” is set to skip dns by default? (/etc/nsswitch.conf) or How to fix dns resolve

The default hosts: line in /etc/nsswitch.conf is hosts: files mdns4_minimal [NOTFOUND=return] dns After installation I've find out that this is what works. dns must come before NOTFOUND: ...
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29 views

Internet connection issue on Lubunu 15.04

I am trying to get my wi-fi connection back on my HP laptop with Lubuntu 15.04 installed. The issue has started after I changed my internet provider and manually configured wired connection through ...
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23 views

Network Manager not going through 3rd DNS

I would like to know if it is common that Network Manager will not go to 3rd configured DNS to resolve an IP. I have configured 8.8.8.8, 8.8.4.4, 192.168.1.24 When I want to resolve a local domain, ...