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.

learn more… | top users | synonyms

2
votes
2answers
477 views

In Ubuntu 12.04 can I disable Iptables firewall?

I want to create a minecraft server for me and my friends to connect to (port 25565). I already use ddclient, which updates the external ip so that the data sent to the hostname is forwarded to the ...
0
votes
0answers
44 views

DNS / resolve issue with certain commands

I have dnsmasq running on my gateway and have populated /etc/hosts with host information for my LAN. This works great for all my workstation they can resolve both short and long host names, e.g. ...
1
vote
0answers
86 views

dnsmasq Not Serving Up Hostnames on hostapd Network

My goal is for clients to be able to connect to my wifi access point and access services on it using a hostname. Currently clients can connect and get assigned an IP by DHCP, but they cannot resolve a ...
0
votes
0answers
93 views

Network bridge has no internet access

I have a machine with two network adapters and I want to use it to share its internet connection to an IP phone (because there's only one Cat5 cable available and while the phone has built-in switch ...
1
vote
1answer
419 views

Bind9 allow-recursion?

We've an allow-recursion statement for our primary name server. allow-recursion {localnets; 192.168.100.0/24;}; If you setup vlan's do you need to add each subnet address, or will "localnets" cover ...
0
votes
0answers
68 views

Dnsmasq configuration for LAN

I am going to configure dnsmasq for my local home network but I am not sure if I understand it. Basically I have a simple network at home: laptop 192.168.0.10 phone (galaxy s2 - ubuntu touch ...
1
vote
1answer
225 views

Ive tried all solutions on internet I found but none of them fix my dns leak issue [closed]

Im using VPNBook and on every server Ive a dnsleak according to dnsleak and dnsleaktest What intrigues Me is that the vpn's dns never appears there but my normal dns always does.So I don't even know ...
1
vote
3answers
663 views

How to add two IPv6 dns-nameservers into /etc/network/interfaces?

With IPv4, I can add two DNS Name Servers without any problem, like this: "dns-nameservers 8.8.4.4 8.8.8.8" Then on my resolv.conf I got: nameserver 8.8.4.4 nameserver 8.8.8.8 BUT, it does ...
0
votes
0answers
33 views

dns server does not return my ip

I'm setting up a dns server on ubuntu 12.04, when I write host "My Domain" in a terminal, it returns 127.0.0.1 instead of the IP that I assigned, I have proven putting # in the line "dns = dnsmasq" of ...
0
votes
0answers
641 views

Sendmail host name lookup failure, cannot send email

I cannot send emails with php mail() function or even with mail console function I am getting error. From /var/log/email.log Feb 19 17:29:07 peter-comp sm-mta[8087]: s1JBmw5M011556: ...
0
votes
1answer
187 views

Ubuntu 12.04: bind9 does not want to start (Permission denied)

I am trying to start bind9 with no success. The error seems to be related to permission but I just cannot find the cause. root@server:~# /etc/init.d/bind9 start Feb 18 20:42:24 server named[2974]: ...
0
votes
0answers
39 views

BIND9 - where are all the references to update keys?

I am testing BIND9 9.9.3 intending to set it up with DHCP dynamic update. I followed this tutorial, but it didn't work uses this command to generate the key: /usr/sbin/rndc-confgen -a Then I got ...
3
votes
3answers
58 views

remove isp-provided dns

My isp provides a dns service; but unfortunately they do block certain sites. I would like to use opendns or google; but it seems like it doesn't work. I have set up a wired connection; given a ...
0
votes
0answers
288 views

Resolvconf is not updating resolv.conf file when connecting via DHCP

I'm running 13.10, and when I connect to a wired network which is configured in Network Manager for DHCP, I get an address, but resolvconf is not updating /etc/resolv.conf properly. I get an IP ...
1
vote
0answers
78 views

Network Manager VPN doesn't update resolve.conf with nameserver

When I connect VPN via NetworkManager, I can't access resources by domain name. But it's ok using IP. Seems like NetworkManager isn't updating resolve.conf with VPN nameservers. I've visited and tried ...
0
votes
1answer
62 views

DNS fails intermittently in 13.10 after update

After update of the following packages: https://gist.github.com/xgdgsc/d52ab6a05adafb152221 I get intermittent DNS failure for less than 1 min every a few minutes. At the same time, other devices ...
0
votes
0answers
15 views

Need help with Mail Server on Ubuntu

I am running Ubuntu 12.04 with nginx I do not have name servers like ns1.mydomain.com neither I have mx records I am using cloudflare for nameservers and then point it to my servers IP. I have ...
0
votes
1answer
65 views

How to use custom DNS server for selected domains only?

There are quite few nice DNS service providers that do region unblocking and advertisement blocking. But I'm not too fond of sharing all my DNS queries with them. How I can use their DNS services ...
0
votes
0answers
43 views

Internet does not connect to anything other than skype and steam chat

My internet has been unable to connect to anything other than the skype chat system as well as the steam chat. Any connections through chrome return: Error code: ERR_NAME_RESOLUTION_FAILED I've ...
0
votes
0answers
23 views

How to easily install mail server in ubuntu 12.04 [duplicate]

Okay I have been trying for the past hour and had to reinstall the OS because it would not turn on anymore. I REALLY need help I have the domain domain.com and I can edit the DNS on the host Now I ...
2
votes
0answers
620 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] ...
0
votes
0answers
51 views

How do I force certain domain names to be resolved by certain DNS servers?

There is a set of domain names, and their sub-domains, that can potentially resolve to two different IPs depending on which nameserver is asked. I want to force the use of a specific nameserver given ...
0
votes
0answers
33 views

random connection with virtual dns!

First of all, this scheme worked normally on Debian. I have CentOS installed via VM on Ubuntu. And there are DNS (Bind) and Apache on CentOS. There are also sites like: 1.mydomain, ..., 10.mydomain. ...
3
votes
2answers
774 views

How to flush DNS in Ubuntu 13.10?

We recently moved our website to a new server. But after changing the NS (name server) records, I can't access my website. The hosting provider said we need to flush the DNS settings in order to see ...
0
votes
0answers
21 views

Configuring Name servers on 12.04

I want to create nameservers on my ubuntu 12.04 dedicated server by name servers I mean ns1.mydomain.com ns2.mydomain.com I am following this guide but it is bit confusing for me as I have never ...
0
votes
0answers
57 views

Intermittent internet name resolution

I have a problem with name resolution (I believe). I have recently installed LXLE 12.04.3. When I search for updates, I get a number of "something wicked happened" responses and it can't find all of ...
2
votes
1answer
6k views

connect: Network is unreachable? - ping

When I attempt to ping google's dns or any outside the network I get connect: Network is unreachable? I can't update either which I put down to this I am new to networking... And Ubuntu. But these ...
5
votes
2answers
28k views

How to flush dns in ubuntu 12.04? [duplicate]

how to flush dns of Ubuntu 12.04 LTS (GNU/Linux 3.2.0-23-generic x86_64) have tried many things form here and here also but nothing is working
0
votes
1answer
1k views

ping: unknown host

Since few days, my dedicated server (Ubuntu 13.04) is no longer able to ping or connect to my NAS through DNS (hostname -> kr1.synology.me ) . The IP address ( 178.83.88.248 ) address against , is ...
3
votes
1answer
510 views

Can't resolve windows domains in local network

I've installed ubuntu on my computer at work because I think it is a perfect system for work which I do but I got some issues. I can't resolve domains from windows DNS server. Basically, we have two ...
0
votes
2answers
117 views

How may I restrict accesing apache using server IP address?

I have a server. I installed and configured Virtualmin/Webmin on it. Also I added three domains and configured almost 100% correct all DNS records. My big question is how I restrict accessing website ...
0
votes
2answers
123 views

DNS/mail confusion “No MX or A records”

I'm attempting to send mail from a remote email account to my postfix smtp mail service on my local network. Everything works fine on the local network and users can freely exchange mail between one ...
1
vote
1answer
41 views

Correct DNS records?

I just got a VPS (2 CPU, 2 Gb RAM, 40 GB SSD). I've downloaded and configured Virtualmin/Webmin. I have two domain names nedegroup.com and nutrizzio.com registered through godaddy. With ...
1
vote
1answer
44 views

Bind 9 problems

Can anyone evaluate my bind zone files and tell me where I'm going wrong? This is my first time writing zone files, so something is probably wrong. I'm using Bind9. After I write these zone files, I ...
2
votes
0answers
68 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 ...
0
votes
2answers
36 views

How do I tell my internal IP to send to my external IP?

I have set up everything necessary for a minecraft server, I have a DNS client with ddclient which is sent from helloworld.dyndns.org to my external ip I have an static internal IP but there is a ...
1
vote
2answers
430 views

Ubuntu Bind9 set up and resolv.conf

I found this tutorial the best I've come across and it works! Well done although I can't vote and comment on it due to my site privilege as yet. How do I do a complete BIND9 DNS Server Configuration ...
2
votes
0answers
438 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 ...
0
votes
1answer
53 views

How do I make a DCHP server?

I want to finish making a minecraft server (TCP/UDP) I already have a system that uses a private ip of 192.168.0.9 And a DNS on it that uses the public ip of 2.220.217.108, then redirects to it from ...
1
vote
1answer
115 views

How do I setup BIND9 and VirtualBox so that my local machine can access my domain names?

I have a complicated setup. And it makes me a bit confused about how I should setup my server, BIND9, and my Mac OS X. So here it is. I have a Mac that is connected to the internet via WiFi. I have ...
0
votes
0answers
86 views

How could I set the Apache DNS?

I have an Ubuntu Server 13.10 and I think that I'm having problems with the Apache/PHP DNS. The computer has a perfect connectivity. I can send mails from shell with PHP, but I can't send from the ...
0
votes
1answer
64 views

Host purchased domain name in apache2 ubuntu server

I have been looking for a solution to this for months with no luck so here goes. I installed the Ubuntu server 13.04 (since upgraded to 13.10) on an old dell e510 and installed apache2. Also I ...
0
votes
0answers
68 views

Setting up Ubuntu for Netflix DNS

I've got a server in the U.S. running Ubuntu 12.04. I'm located in Denmark. Is it possible to setup my Ubuntu server as DNS server, so I can use Netflix with U.S. content? I've read it should be ...
0
votes
0answers
179 views

Network starts slow on Ubuntu 13.10 start or resume

I have this laptop (ThinkPad X1 Carbon) with Windows 7 and Ubuntu 13.10 dualboot. Recently upgraded from Ubuntu 12.10. The good thing about this upgrade is that Ubuntu 13.10 starts very fast compared ...
0
votes
0answers
71 views

Squid error on bind9 start

I'm getting the following error after a bind9 update when I restart bind9 on my 12.04 LTS server: root@server2:/etc/bind# service bind9 restart * Stopping domain name service... bind9 ...
0
votes
0answers
39 views

Postfix fails to create Maildir

I'm configuring a virtual squirrelmail for a school assignment. Now I configured a dns server and all my dig's and nslookups succeed. I was also able to add a user in terminal and send an email from ...
0
votes
1answer
39 views

How can I specify or query the order DNS servers will be queried?

For some reason I am not hitting the DNS server I am expecting to hit. I have a wireless connection with a VPN on top of it. I have set both of the connections to use a specific set of DNS servers ...
1
vote
0answers
51 views

Network Problems after installing wireless USB Adapter

some time ago I tried to install an Edimax 150Mbps Wireless IEEE802.11b/g/n USB Adapter for my Lenovo T60 for better wifi performance. It didn't really work out properly, at least I had the feeling ...
0
votes
0answers
186 views

BIND9 dnssec issue

Im getting a lot of these errors in syslog Jan 13 06:43:22 sgdns01 named[14352]: error (no valid RRSIG) resolving 'variety.com/DS/IN': 165.21.83.88#53 Jan 13 06:43:34 sgdns01 named[14352]: validating ...
0
votes
3answers
489 views

DNS Resolution fails, and /etc/resolv.conf isn't persistent, how can I force the use of certain DNS servers?

I have this persistent and annoying issue. When I first boot up, my desktop can't resolve any DNS names unless I edit the /etc/resolv.conf file and remove the entry for name-server 127.0.0.1 and ...