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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57 views

Ubuntu internet connection problem

I installed Ubuntu on my laptop. Here are my internet settings: auto lo iface lo inet loopback auto eth0 iface eth0 inet static address 10.1.17.10 /*this is my IP @ddress*/ netmask ...
1
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1answer
244 views

How to resolve the DNS locally when there is a proxy configured?

If I configure the proxy, under Settings -> Network -> Proxy, and then try to access "http://google.com", the name resolution (IP of google.com) will happen there, at the proxy server but... How can ...
0
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0answers
30 views

Aceessing a webserver on aws EC2 instance with custom nameservers?

I tried to run a web server on amazon's ec2 instance . When I quired it through ELASTIC-IP of instance it resolved perfectly , but whenver I am tried to do a nslookup or try to access via custom ...
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0answers
48 views

Adding different sets of DNS to -one- network adapter

My work environmental infrastructure depends on two different DNS servers. One that is here locally with us and one that is remote, on another location (which we have access to). The question is ...
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1answer
161 views

Ubuntu 12.04 server will not resolve

I am at a loss as to why I can't resolve. I am sure I am missing something and I hope someone can help. I have installed Ubuntu 12.04 server. After setting to static, I can not resolve host names (to ...
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0answers
38 views

changes in etc/dhcp/dhclient.conf get ignored

Im wanting to never use a specified DNS Server so I tried using reject ip address as suggested here to my question: How to make Ubuntu never use specified DNS server? (DNSLeak issues) but setting ...
0
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1answer
86 views

MAAS / nodes have limited internet access after install

I´ve installed a test environment for MAAS and JUJU. MAAS manages both DHCP and DNS. Following setup: maas01 - static IP juju01 - dhcp and dns from maas01 node01 - dhcp and dns from maas01 and pxe ...
0
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1answer
102 views

How to make Ubuntu never use specified DNS server? (DNSLeak issues)

Im using VPN and dnsleaktest.com shows me that it discovered vpn dns and my isp dns. I want to avoid using isp dns when using vpn. I found I can use prepend domaine name servers in ...
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0answers
197 views

dnsmasq unrecognized command

I'm attempting to run a script which calls service dnsmasq restart service dnsmasq restart dnsmasq: unrecognized service No matter what I call for dnsmasq, it gives me the "unrecognized service" ...
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0answers
203 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 ...
0
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1answer
210 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
53 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. ...
2
votes
2answers
963 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 ...
0
votes
1answer
58 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 ...
1
vote
0answers
57 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 ...
0
votes
1answer
38 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 ...
2
votes
0answers
398 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
185 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 ...
0
votes
1answer
41 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 ...
0
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0answers
202 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
184 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
vote
1answer
74 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!
2
votes
2answers
655 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
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0answers
47 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
91 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
95 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
517 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
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0answers
75 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
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1answer
254 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
925 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
771 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
197 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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votes
0answers
46 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
76 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
345 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
89 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
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 ...
0
votes
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
votes
1answer
85 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
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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 ...
0
votes
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
votes
0answers
756 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
931 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
22 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
60 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
8k 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
36k 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