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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182 views

DNS Look up failed - Ubuntu 12.04

I have this problem, which seems to be a 'common' problem on Ubuntu. When I try to open some pages on chromium I get the "DNS look up failed" error. (It doesn't say exactly that on Firefox but it's ...
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1answer
199 views

Iptables and bind9 to forward to google's dns

Hello i have a very hard time on getting along with iptables and bind9 as my internal network dns server. It's configured to forward my queries to google's dns (8.8.8.8). The main problem is i can't ...
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1answer
51 views

Setup subdomain to service

I've managed to get 2 subdomains working following the second post in this thread, but it only works for Apache. I would like to have a subdomain pointing to a certain service running on the server. ...
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2answers
890 views

How can I connect to remote windows domain knowing gateway hostname and domain name?

I have received credentials for my University's network machine (Ubuntu yay!) that I have ssh access to. I would like to connect to it but first I need to connect through a gateway that I have ...
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1answer
53 views

I installed DNS server in my initial Ubuntu server installion how do I uninstall it?

I installed a DNS server in my initiate Ubuntu server installation how do I uninstall it? Cause I don't want it any more and I don't want it laying around cause I heard the more server services my ...
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0answers
54 views

Update not working, nothing is installing in ubuntu 12.04

I am very much new to Linux. I'm using Ubuntu 12.04. The problem is that I'm unable to install anything on it. Initially when I installed it, it was fine. But I was having some dependency problem with ...
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1answer
37 views

LAN but no WAN acess

I have just moved and when I did I received a new DSL modem. I have set it up as a transparent bridge as I have an internal router. It is just like I had done before, except I got rid of my static IP. ...
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0answers
12 views

Apparent DNS error when virtualized Ubuntu comes back from sleep

I am running ubuntu 13.10 in Virtualbox on a Windows 8 host. When my host machine sleeps and wakes, my tabs in guest Ubuntu no longer connect even after the main connection is restored. What makes ...
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372 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 ...
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0answers
171 views

(Solve) Connecting Ubuntu Server 12.04 to public network (internet access)

I have installed Ubuntu Server 12.04 on my computer. I want to setup my dedicated server for web server and also I already have my own domain for web hosting company. I followed these instructions ...
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1answer
40 views

dns is fine but www don't work

I currently have a server with a static IP address and setup DNS on it. I have my DNS server working correctly for my domain. I can create an A or CNAME record, restart BInd9 and it works. I have ...
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0answers
191 views

Wifi Connected. But No internet

I'm using Lubuntu dual booted with Windows 8. I have an ACER aspire V3 laptop. I installed Alternative wireless driver Broadcom 802.11 Linux STA wireless using Additional drivers. Now i can connect ...
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0answers
166 views

TSQL connection refused - host command DNS resolve issue in local network

I am using VMWare Starter and running 2 guest VMs, Ubuntu and Windows XP Professional. The host system is Windows 7. Windows XP Professional hosts MSSQL database, Ubuntu talks to it using FreeTDS. ...
1
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1answer
73 views

can I use bind9 as a DNS to resolve to an external IP?

Question says it all. I have a digital ocean IP address and I want to know if I can use bind9 to resolve a registered domain on a completely different network/IP? If not, what can I use? Thanks!
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2answers
592 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 ...
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0answers
46 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. ...
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0answers
89 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 ...
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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
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1answer
481 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 ...
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0answers
73 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 ...
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1answer
247 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 ...
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3answers
829 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 ...
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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 ...
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0answers
734 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: ...
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1answer
195 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]: ...
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0answers
44 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
69 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 ...
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0answers
325 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 ...
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0answers
82 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
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1answer
64 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 ...
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0answers
16 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
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1answer
76 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 ...
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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 ...
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0answers
24 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
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0answers
719 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] ...
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0answers
34 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
876 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
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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
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0answers
59 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
7k 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 ...
7
votes
2answers
34k 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
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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
565 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
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2answers
127 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
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2answers
131 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
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1answer
44 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
45 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
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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
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2answers
531 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 ...