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.
15
votes
8answers
11k views
What is the proper way to change the DNS IP?
I suspect that the name server provided by my ADSL modem/router is buggy. Whenever I browse to a website for the first time in ubuntu, resolving the domain name takes at least 15 seconds.
To work ...
46
votes
12answers
110k views
How do I add a DNS server via resolv.conf?
Is /etc/resolv.conf useless in 12.04?
I see that DNS server info is stored in Network Manager now. The nmcli command line tool can list that for you.
If I want to add one more dns server, will ...
21
votes
4answers
3k views
Virtualbox DNS stopped working on upgrade to 12.10
I have a Debian image setup on Virtualbox that uses the default NAT to access the internet. It was working fine before I upgraded to 12.10. After I upgraded the DNS lookups no longer work. I still can ...
20
votes
7answers
11k 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 ...
13
votes
7answers
4k views
Why does my resolv.conf file get regenerated every time?
My /etc/resolv.conf file gets regenerated every time, making me loose Google DNS servers when I reconnect my 3G modem.
For changing the DNS settings, I looked at ...
13
votes
6answers
3k views
What Can Be Done To Secure Ubuntu Server?
I have a project to secure Ubuntu Server as much as I can.
The server is a web hosting server. The server will be running LAMP , Mail , and DNS.
25
votes
6answers
1k views
Problem resolving many of the Web Pages
I am presently running Ubuntu 12.04 and using Chrome/Firefox along with OpenDNS (have tried Google Public DNS as well as DNS of my ISP).
Suddenly, a lot of websites that I visit frequently don't ...
17
votes
3answers
16k views
NetworkManager not populating resolv.conf
I recently upgraded from 11.10 to 12.04, and now NetworkManager isn't populating /etc/resolv.conf when connecting to wireless networks, when it had been working perfectly in 11.10. I'm not seeing any ...
8
votes
5answers
11k views
Best way to set up DNS caching?
In order to speed up DNS lookups, I want to install a DNS cache or proxy.
I can see at least three programs I think will do the job: bind9, pdnsd, or dnsmasq.
I would like to make sure that if I ...
4
votes
3answers
5k views
DNS server address no longer stored in resolv.conf; where is it now?
I sometimes switch DNS servers, using the NetworkManager indicator in the taskbar; this worked fine with previous versions, and actually works fine with 12.04, too, except for one thing: I use Conky ...
10
votes
3answers
5k views
Why can't my machine resolve local windows hostnames?
When I ping any local windows hostname from my Ubuntu machine I get "unable to resolve host", but when I ping from a windows machine it works fine. Why would this be?
OS: Ubuntu 10.04
Samba & ...
1
vote
3answers
1k views
DNS server configuration is changed automatically
The default DNS server was running too slowly, so I changed the configuration by adding a nameserver.
/etc/resolv.conf :
nameserver 202.102.192.68
nameserver 210.45.240.99
domain ***edu.cn
search ...
1
vote
1answer
1k views
Internet connection not working although it says it is connected
I have a Toshiba z830 with ubuntu 12.04. I could use without problems the DSL connection (I have no router, only a modem) at home until a couple of days ago:
It stopped to work when while connected ...
7
votes
1answer
2k views
How do I get resolvconf to regenerate resolv.conf after I change /etc/network/interfaces?
After updating /etc/networking/interfaces with something very similar to below, how do I get /etc/resolv.conf to update? I tried (as root) resolver -u, service networking restart but they didn't ...
5
votes
4answers
14k views
How do I edit my resolv.conf file?
I have the problem that my ubuntu machine uses the wrong dns server. For some reason he queries localhost for dns records.
I have added the dns server in the network settings gui, but ...
8
votes
5answers
15k views
Command-line to list DNS servers
Is there a command to list dns servers?
I tried
$ cat /etc/resolv.conf
# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
# DO NOT EDIT THIS FILE BY HAND -- YOUR ...
6
votes
4answers
684 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 ...
3
votes
2answers
1k views
Why is ddclient giving me an “Invalid IP” error when trying to update dynamic DNS?
I am having a really hard time getting ddclient (which updates OpenDNS with my current IP address) to work. I have it running as a daemon, but it never succeeds in updating my IP address at openDNS.
...
4
votes
0answers
326 views
How to change the DNS name server? [duplicate]
Possible Duplicate:
What is the proper way to change the DNS IP?
How to change the DNS NameServer in Ubuntu 11.04, When I typed node.ws on browser url-bar it redirected me to ...
1
vote
4answers
822 views
DNS stopped working on laptop
Was working fine then stopped inexplicably.
I can ping the gateway/DNS router/firewall (Untangle) using WiFi and cable using WiCd. Network Manager does not work on this computer
Firefox reports ...
0
votes
1answer
2k views
Troubleshooting wireless network connection: DNS not working
I have a wireless router that assigns IPs using DHCP. My laptop (Acer Aspire 1 110L running Ubuntu 10.10) connects to the wireless network, but DNS is not working. I've tried to trouble shoot the ...
4
votes
2answers
191 views
My computer stops seeing the other computers on my network
I'm running Ubuntu 11.04.
Sometimes my computer stops seeing the names of the other computers on my network.
So I can no longer log into another computer by typing the hosting name
e.g. ssh ...
2
votes
1answer
10k views
Can not access Internet (DNS names do not resolve) after update today
I have been using Precise for a few weeks now for work with no problem. Today, I am not able to access any website using either wired or wireless connections.
I installed the updates today which ...
7
votes
2answers
2k views
What does “.local” do?
I've got several Ubuntu machines on my network at home, but the DNS is provided by a windows server (2K). When I ssh to them from another , if I ssh to them as "machine" I can't connect, but if I ...
6
votes
4answers
32k 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 ...
6
votes
3answers
4k views
DNS resolution fails after 12.10 upgrade
After my upgrade to 12.10, DNS resolution seems to fail for both local and external addresses. I can successfully ping local and external IP addresses (google.com, at least), but pinging DNS names ...
5
votes
4answers
10k views
internet access problem in 12.04
Yesterday, I have upgraded Ubuntu from 11.10 to 12.04 LTS and everything was ok (there was no error)
After restart, my "Auto Ethernet" connection established, also my VPN connection established.And ...
5
votes
5answers
2k views
How to check if DNS is encrypted?
I have installed DNSCrypt , its OpenDNS encrypted DNS patch for Ubuntu & other Linux users & it's working fine.
How do I know if my DNS is encrypted?
I have googled but didn't find anything.
...
2
votes
1answer
1k views
When I try to add repositories, why are ubuntu's keyservers timing-out?
Something is rendering receiving keys from keyserver.ubuntu.com impossible and I'm not even sure where to begin in trying to resolve this.
As an example, we'll use the Spotify linux app found here: ...
1
vote
3answers
906 views
DNS server not responding
From time to times I have to reboot my Ubuntu 11.04 remote desktop. Once it up and I run Cromium browser with many tabs (20 for example) dns server doesn't respond anymore. At beginning I suspected my ...
13
votes
2answers
3k views
Switching a server to static IP from DHCP
I am running an Ubuntu 10.04 server installation and I recently had to switch it from DHCP to static ip. I edited /etc/network/interfaces file and switched
iface eth0 inet dhcp
to
iface eth0 inet ...
2
votes
2answers
2k views
Chromium Error 105 (net::ERR_NAME_NOT_RESOLVED)
Sir,
I am using both Chromium and Firefox on Ubuntu 10.10. While Firefox works fine, Chromium gives Error 105 (net::ERR_NAME_NOT_RESOLVED) for all sites except Google searches, i.e. if I type anything ...
1
vote
2answers
212 views
Set up domain name on private server
I have a Linux server (Ubuntu 12.04) I'm using to learn as much as I can about server management. I've got as far as getting a full LAMP setup running, but have hit a dead end trying to get a domain ...
1
vote
3answers
408 views
problem loading internet pages
I have installed ubuntu 11.10 and when on firefox i can get onto google or google earth and even gmail.But it wont connect to amazon or ebay or bbc or itv homepage.It only seems to like google I have ...
0
votes
0answers
21 views
dns nameservers purchased domain name VPS [duplicate]
I have a purchased a domain name from a registrar. I am running a VPS. Ubuntu 12.04. Setting up LAMP was no problem. But I can only access the VPS via the IP at the moment since I have no active DNS ...
0
votes
1answer
572 views
Strange network issue; works on windows, but not on ubuntu, works on campus wireless, but not at home
I have a broadcom device using dell laptop that can dual boot into windows 7 and ubuntu 12.04 LTS. I have no trouble connecting to the internet using the Windows 7 side, but on Ubuntu firefox and ...
0
votes
2answers
416 views
Why doesn't this custom static IP network configuration work?
I installed Ubuntu server 12.04. I configured my network like this:
auto eth0
iface eth0 inet static
address 121.127.36.164
netmask 255.255.255.0
network 121.127.36.0
broadcast 121.127.36.255
gateway ...
0
votes
1answer
1k views
How to setup DHCP Server and Dynamic DNS with BIND? [duplicate]
Possible Duplicate:
How to make my pc a DNS server in local network with no-internet access?
I have installed the two servers (dhcp & DNS) what i need is to make the dns dynamically ...
0
votes
0answers
59 views
Updating my resolv.conf manually [duplicate]
Possible Duplicate:
Why does my resolv.conf file get regenerated every time?
I need to update my resolv.conf, for this reason.
So I simply nano'd the file and edited (added the ...
