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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3
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1answer
31k 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 ...
0
votes
1answer
33 views

How to view hostname locally, works external

I have a webserver hooked, up I recently noticed that I can view the webserver htttp://music2share.ca from out side my network but when I try with in my network at home wont work, I edited the hosts ...
0
votes
0answers
17 views

Setup router, iptables to access website via Domain Name in local network problem

I have a problem with iptables / bind9. Topology: My local PC: DNS set to: 88.220.77.193 VirtualBox with: ROUTER: eth0 : 88.220.77.193 255.255.255.0 to the Internet; eth1 : 192.168.100.254 ...
1
vote
1answer
33 views

Internet wired connection holds only few seconds/few requests before needing to call dhclient again

I have a dual boot ubuntu/windows 8, everything was working fine, suddently, after a reboot from the linux partition, the DNS resolution seems to be in trouble : I have to run dhclient before each ...
1
vote
3answers
5k views

How do I find DNS servers in use by my Xubuntu 14.04 Server?

I have a Xubuntu Server 14.04 x64. How do I list all DNS servers that are in use without NetworkManager which is not even installed?
0
votes
1answer
15 views

DNS routing after PPTP connection

I use a PPTP VPN to connect to my work's environment, but don't know how to configure DNS resolution the way it seems appropriate. When I connect via Network Manager I get two servers in ...
0
votes
1answer
16 views

Can't reach SMTP server via telnet

Virtual Machine: Ubuntu 14.04.1 LTS I'm using putty to access Ubuntu from my Windows 7 PC. This Ubuntu machine does not have a registered domain name. Setting up a local SMTP server on this Ubuntu ...
0
votes
0answers
18 views

Internet connect through ISP to local server's root and other folders

This is complex so let me explain I have successfully connected to my local dev server which is Ubuntu 14.04 LAMP setup. I have done this by using a no-ip to handle the dynamic DNS, and forwarding ...
38
votes
5answers
47k views

How do I get resolvconf to regenerate resolv.conf after I change /etc/network/interfaces?

After updating /etc/network/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 work. I ...
0
votes
0answers
20 views

Why does connecting to a WiFi network fix DNS settings on another network interface?

I use EasyTether for USB tether to my MBA running Ubuntu 15.04. The steps to do this used to be: easytether connect sudo dhclient easytether0 At some point (probably after the upgrade to 15.04, ...
21
votes
7answers
174k 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 ...
8
votes
6answers
29k views

How to view the DNS address assigned by DHCP?

How to view the DNS address assigned by DHCP? ifconfig can not show it. $ ifconfig -a eth0 Link encap:Ethernet HWaddr 90:e6:ba:22:6a:f2 inet addr:192.168.1.111 Bcast:192.168.1.255 ...
4
votes
2answers
253 views

How to know what DNS am I using in Ubuntu 14.04

(A follow up to similar question for 12.04.) Prior to Ubuntu 12.04, you may see the active DNS in /etc/resolve.conf. In Ubuntu 12.04, NetworkManager no longer works with the file. You have to ...
0
votes
0answers
57 views

Why Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/trusty/InRelease if I have ping?

I am trying to update an ubuntu 14.04 server and have my dns config ok because I can ping us.archive.ubuntu.com so I dont know what is happening here. This is my /etc/network/interfaces file: auto ...
0
votes
0answers
47 views

Sudo apt-get update error Ubuntu 14.04 With Big Blue Button

I'm using the Ubuntu server (OpenSSH not the entire system) to install the Big Blue Button webinar system to it (in Ubuntu's version 14.04) and when I type in sudo apt-get update it gives me this: ...
1
vote
0answers
29 views

Correct nameservers in resolv.conf but no hostname resolution

As said in the title I can't resolve hostnames when doing a "ping google.com" even though the content of /etc/resolv.conf seems correct : nameserver 8.8.8.8 nameserver 8.8.4.4 I am connected to ...
1
vote
0answers
16 views

Domain name is syntactically invalid

I trying to send e-mail via exim . when i try to send mail to mail.ru i got an error . What should i do? host domain on my machine? and why it is syntactically invalid. How should i reconfigure my ...
0
votes
1answer
3k views

Publish own DNS Server and website with own domain name [duplicate]

I'm trying to publish my own website with my own bind9 DNS server running in Ubuntu Server 12.04.3 I've registered the domain name example.com.ar in nic.ar (entity that registers domains in ...
0
votes
0answers
2 views

how to modify the way powerdns reads from mysql DB

how to modify the way powerdns reads from mysql DB ? the mysql log shows that it reads certain columns , rows, content et cetera. how do i change the order of reading or manipulate with it ?
0
votes
0answers
15 views

How to set custom DNS for all users using Ubuntu as Wifi Hotspot?

I use my laptop as wifi hotspot with an "ad-hoc network" instead of a normal wifi router. The question is: how can i set custom dns for all the hotspot's user so i can create new domains that will ...
0
votes
1answer
89 views

DNS Issue in ubuntu 14.04

I am facing DNS resolving issue sometimes in my Ubuntu 14.04.2 LTS trusty. I have configured my system with network manager to work with static IP assignment. I have also tried by changing DNS server ...
0
votes
0answers
40 views

Facebook hanging on akamaihd.net

I have this issue since a long time. Facebook keeps hanging on akamaihd.net. Often the page doesn't even load CSS, everything appears out of place. And sometimes the "establishing secure connection" ...
0
votes
0answers
20 views

Keep getting Bad Gateway

here is the output from $ sudo apt-get update Err http://archive.ubuntu.com trusty/main Sources 502 Bad Gateway W: Failed to fetch ...
3
votes
1answer
29 views

ISP DNS Server used Instead of Local DNS

The Issue On my company's internal network, there is a development server called devserver.mycompany.com Usually I can connect to this server with out issue, but sometimes (seems random to me) ...
2
votes
3answers
4k 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 ...
1
vote
0answers
17 views

BIND configured, DNS configured. No joy!

I have a GoDaddy domain, I've adding host names (ns1, ns2 of the domain through GD), I've pointed the name servers to my VPS server IP. So we are ok so far, great. I've resorted to install VestaCP on ...
0
votes
0answers
36 views

how to configure lamp for ubuntu server so to load example.local domain to my web server

I have installed Ubuntu server 15.04, Lamp in it and configured the dns to setup static IP by following the below tutorial. ...
0
votes
3answers
5k views

No internet connection (DNS server address is Router address)

My internet connection in Ubuntu 13.10 doesn't work. I can use IP addresses to open websites but not URLs. The DNS server that I connect to is the IP address of my Router. When I connect to the VPN of ...
0
votes
0answers
16 views

14:04 Server: dhcpd/bind9 - (Static IP) Clients no longer have connectivity to external hosts

After following the linked guide from a fresh install of 14.04: http://blogging.dragon.org.uk/dns-with-bind9-and-dhcp-on-ubuntu-14-04/ I made an addition to /etc/dhcpd.conf so that I had a group of ...
0
votes
0answers
98 views

Ubuntu DNS change ERR_NAME_NOT_RESOLVED in Chrome

I've created my first ubuntu 14.04 server on digital ocean and tried to point my domain to it. Ive configured everything with help of the following tutorial to set up my apache virtual host. When i go ...
0
votes
1answer
60 views

15.04 - Mounting using CIFS failing with “No such device or address”

I'm trying to mount a cifs share using: sudo mount \ -t cifs \ -o credentials=$HOME/.smbcredentials \ //server.example.com/Common/Share/Path /mnt/mountpoint Which fails with: Retrying ...
0
votes
0answers
139 views

getting openconnect vpn to work through network-manager

this is the same issue as here: Getting openconnect vpn to work through gui , but my additions to it were deleted and i was asked to create a new question. in fact, there are a number of folks asking ...
4
votes
2answers
6k views

Using Ubuntu 14.04 as router with iptables, clients can't go online. Probably DNS issue, iptables setting needed

CORRECTION 3: SOLVED! I needed to add the the official DNS server of my departement's VLAN as DNS to the clients. I've read through a large number of posts about iptables issues when using Linux as ...
0
votes
0answers
31 views

Ubuntu 14.04 502 Proxy Error Reason: DNS lookup failure for: radiant

I tried to access a website I use on a regular basis, but I cannot access it anymore. I do not have any experience solving issues in my computer. I was wondering whether anyone could help me solve ...
1
vote
1answer
355 views

KVM DNS access guest by using its hostname (Ubuntu 14.04)

I have a guest machine running ubuntu 14.04 on an Ubuntu 14.04 host running KVM/QEMU. Everything works fine except for one thing. Given my guest's hostname is virtual-machine-1, I would like to be ...
0
votes
0answers
22 views

if secondary dns server is down ubuntu can not resolve

I am experimenting with two local DNS server. When I take down the second (or the primary) dns server, I can not resolve any domain name. Using host command or nslookup I get time out error : ...
0
votes
1answer
4k views

dns configuration problem bind9

Following is my bind9 configuration the domain I want to configure is home.lan it is home network /etc/bind/named.conf.local is following zone "home.lan" IN { type master; file ...
0
votes
1answer
30 views

Problems on Kubuntu machine connecting to some sites after AT&T uverse upgrade

I recently had the U-verse service upgraded, and noticed that Facebook and youtube, and sometimes Yahoo have problems loading and displaying content. I am running Kubuntu 14.04 LTS, and using the ...
1
vote
2answers
10k views

SSH: Could not resolve hostname user@host: Name or service not known with my connection

I have a problem to connect a server using ssh. I got the following error message: ssh user@host SSH: Could not resolve hostname user@host: Name or service not known with my connection Also, if ...
0
votes
0answers
31 views

Wireless/DNS Problem

I have a weird wireless/DNS problem. I am using a ALFA Wireless adapter: AWUS036H. So the problem is this, every now and then the Wifi disconnects and reconnects. When it is able to reconnect ...
1
vote
1answer
459 views

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 ...
1
vote
0answers
47 views

Connect to network - network is unreachable

Although I am able to browse the net just fine I keep getting network unreachable when I run a download using my Java program. It was working fine till yesterday but now it is suddenly giving me ...
0
votes
1answer
53 views

How to configure postfix to not relay to local virtual domain?

I have set up a SMTP server with iRedMail on Ubuntu 14.04 LTS and everything is working smoothly. I can create new users and send e-mails. My situation however is a bit more complicated: I need this ...
-1
votes
0answers
13 views

packets exchanged during a DNS [on hold]

Hello I have set up a DNS server in my lab. I have a doubt regarding the packets that get exchanged. I have my client from where I am trying to ping a domain. My resolver (service unbound) is running ...
0
votes
0answers
14 views

dns bind reverse lookup failed in webbrowser

I am in a local lan my server is acting as dns & web server. I am installed the bind in that server and set the primary dns to 127.0.0.1. Everything worked fine. "nslookup group.hom" command ...
0
votes
1answer
29 views

Why is the content of /run/resolvconf/interface/NetworkManager changed every time I reboot?

I have some issue with my dns configuration, so I googled and picked up a solution by 1) editing /run/resolvconf/interface/NetworkManager and 2) running sudo resolvconf -u. This helped a little ...
26
votes
1answer
176k views

How do I configure my DNS settings in Ubuntu server?

According to this page it appears to be simple. However, /etc/bind does not exist on the default installation of Ubuntu 12.04.3 LTS server. So, without installing any further software, how can ...
0
votes
1answer
25 views

I have no SOA how to edit the db.domain file

I am in a private network having 192.168.1.0/24 . I have a wireless router, i am providing wifi hotspot to my users with wireless router and i have 100 users in the network. I want to provide name to ...
56
votes
5answers
166k 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 ...
0
votes
0answers
11 views

how to provide dns name service to web server in a LAN

I am running a web server in a local are network managing 200 members. I want to provide a name to my web server's ip. I searched alot and find a tool dnsmasq i don't know how to set this to provide ...