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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1answer
17 views

SMTP SERVER for redirect mails in good dns

I am a student, and i have a formation period. They asked me to create a SMTP server/proxy for dispatch mails in one network with two DNS. In function of the domain of the receiver. Example : A is in ...
0
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25 views

MAAS images register with “ubuntu” hostname in the DNS

I have set up a MAAS server (last stable 1.8.3) with an external DNS and DHCP and everything seems to work fine except for a minor issue deploying the Ubuntu 14.04 LTS image. During the deployment ...
0
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0answers
86 views

OpenVPN, IPv6 and DNS Leaks in Ubuntu 14.04

I have been trying to set up a secure connection using OpenVPN but I've been running into some issues with DNS leaks. Basically, I have no problems getting the VPN service up and running using ...
0
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1answer
37 views

How to resolve multiple hosts inside a NAT firewall

My apologies if this has been asked before, but I can't seem to find a complete solution. I have a hosted sub-domain at no-ip.com with a wildcard DNS option enabled. On my end I have a firewall ...
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0answers
15 views

Resolve domain names to IP's based on physical adapter

System Configuration eth0 NIC to the LAN/WAN/Internet (working, don't want to mess with it) eth1 NIC eth2 NIC Objectives Assign a static IP to eth1 and eth2 and assign IPs (DHCP) on separate ...
1
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1answer
42 views

Bind9 basic configuration for internal network with windows pcs

I have a network with more than 50 PCs running on Windows, Mac ans Ubuntu. We have one internal Web Site running in a windows 8 PC IIS on the IP 192.168.0.110. Right now we all can access this ...
0
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3answers
59 views

Pointing a domain-name to my local RaspberryPi running Raspbian Wheezy [closed]

[I hope this is the right StackExchange site for this question. It is about Ubuntu, but also about servers/networking.] I have a RaspberryPi running Apache on my local network. I forwarded port 80, ...
0
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1answer
65 views

nslookup query not working in Ubuntu

I am trying to use the code nslookup -q=mx gmail.com to find the mail server of gmail.com, but its not working on my Ubuntu. I have tried it in windows and it works fine. I can't find out what the ...
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0answers
22 views

Expose my home computers by HOSTNAME with BIND9 and DynDNS?

I would like to access my home computers, by name, from the public internet. I have a DynDNS address madeup.dyndns.org that points to my home router at 12.34.56.78. From work, I can reach my home ...
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0answers
33 views

dnscrypt-proxy Suddenly Stopped Working after Last Friday Updates on Trusty 14.04

I was using dnscrypt-proxy from my PPA https://launchpad.net/~anton+/+archive/ubuntu/dnscrypt since last January without any problem on my Ubuntu Trusty 14.04. However yesterday when I restarted my ...
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0answers
28 views

Protection against infected ISP

Today I faced a scary situation. I visited some websites and there was many ads popping up which warned me that something is wrong. I started my investigation and find out that some javascript files ...
0
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1answer
42 views

resolve.conf issue in 14.04.1 LTS

resolve.conf is displaying some HTML code and I can't seem to correct the issue. I've added DNS entries to /etc/network/interfaces and resolvconf -u showed a missing symlink; so I rm'd resolve.conf ...
0
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1answer
31 views

Configuring my email MX record

I'm dropping my hosting and email service with GoDaddy. I will maintain them as my registrar and DNS. I have setup an Ubuntu Linux 14.04.3 Apache2 web server and it is working. I just need to open the ...
0
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1answer
252 views

How to solve “wget: unable to resolve host address” [closed]

I am running this as root: # wget http://prdownloads.sourceforge.net/sourceforge/nagios/nagios-4.0.1.tar.gz --2015-11-17 20:31:46-- ...
0
votes
1answer
40 views

apt-get update hangs on a repo addr that should be responsive [duplicate]

--DUPLICATES apt-get stuck at 0 [Connecting to us.archive.ubuntu.com] --RESOLVED same as in link above... general env ( a new isp 2 weeks ago 'web-pass.com' ) ubuntu 12.04 no local dns cache ( ...
1
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1answer
510 views

intermittent error while browsing on chrome DNS_PROBE_FINISHED_NO_INTERNET

On ubuntu 15.10 while browsing with firefox or chrome i randomly get this error and then i have no internet unless i reconnect to the wifi (or reboot) the error > DNS_PROBE_FINISHED_NO_INTERNET Does ...
0
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1answer
119 views

RDP unable to connect Remmina/Ubuntu 14.04

Remmina had been connecting to my RDP service for several months, until it just stopped. It will still connect by IP address. Ping confirms that the domain name resolves to the proper IP, and nothing ...
1
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0answers
25 views

Cannot Connect to Network checked /etc/network/interfaces

I am trying to connect to the network on a ubuntu server 14.04 on a laptop. Pinging to google.com gives unknown host google.com pinging to 8.8.8.8 gives Network is unreachable /etc/network/interfaces ...
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0answers
652 views

curl: (7) Failed to connect to SERVER port 80: No route to host

Please help me to understand. I am currently try to set-up Parsoid with this guide. It is needed for the MediaWiki extension Visual Editor. After the installation of the Ubuntu repositories I ...
1
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1answer
69 views

Two NICs and routing between the interfaces

I am having a problem with an Ubuntu server running two NICs on two different subnets androuting between them. We are running a Nginx server as a reverse proxy with a public subnet and private ...
0
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0answers
31 views

sharing ethernet connection by preserving external DHCP server

I am currently using two workstations at the University, but I only have one single ethernet cable providing internet connection. One of the two workstations (running Ubuntu 14.10) has two ethernet ...
0
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1answer
45 views

Samba PDC Intenal DNS Forwarder

I have setup a Samba PDC using the following guide: https://wiki.samba.org/index.php/Setup_a_Samba_Active_Directory_Domain_Controller I have opted to use the internal Samba DNS server and have ...
0
votes
1answer
13 views

How to manage sub-domains on Ubuntu

I have an Ubuntu server with the following domains: sub-staging.example.com sub.example.com While testing the site via mobile, I noticed the phone would force the url to: www.sub.example.com ...
0
votes
1answer
36 views

My DNS settings constantly set itself to default

I execute sudo gedit /etc/resolv.conf on terminal and when opened I modify the nameserver 127.0.0.1 to nameserver 8.8.8.8 nameserver 8.8.4.4 but it resets to the unmodified version after ...
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0answers
63 views

System freezes during boot after failed upgrade

I was running an upgrade from Ubuntu 15.04 to 15.10. About 80% of the way through KDE crashed and the system became unresponsive. I restart and now the system hangs during boot and I am unable to drop ...
0
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0answers
50 views

DNS not resolving using Docker + Vagrant on Ubuntu 14.04

I've enabled my-example.com in a Docker container running apache2 on vagrant running on top of native ubunutu 14.04. In the Vagrantfile I've mapped Vagrant port 80 to 8086 on the Ubuntu host ...
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0answers
18 views

Recursive query in Bind

I want to setup a recursive DNS server with bind and don't want to forward queries to another DNS servers.(every query be recursive) How to setup it? Thanks.
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0answers
116 views

Ubuntu Server 14.04.3 NAT DNS Configuration

I have a Ubuntu Server 14.04.03 configured as a NAT Gateway using ISC-DHCP-Server. There are around 50 client PCs that access the internet through it, most of them running Windows. I want to use the ...
0
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2answers
216 views

How do I allow DNS through interface filtering using iptables in Ubuntu Headless

I've seen some questions referring to static DNSs, openVPN server pushes etc, but none of them really apply or they require GUI tools and I am using a headless Ubuntu Core that I SSH into. ...
1
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1answer
71 views

resolvconf Error when running dhclient in recovery mode

when I go to recovery mode and I want to activate networking, I usually type: dhclient eth0 After this, I can for example ping to www.google.com. However, I get the following error: RTNETLINK ...
0
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0answers
75 views

Bind9 nor working - SERVFAIL Ubuntu 14.04

Hi I have an issue trying to configure my Bind9 service. here the result of dig command: ; <<>> DiG 9.9.5-3ubuntu0.5-Ubuntu <<>> smx.local ;; global options: +cmd ;; Got ...
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0answers
36 views

VPN with openDNS issue?

So I had a DNS leaks and I decided to fix that. Im using ra4wvpn, and openDNS (I configured only my machine, not the router if this is important info). When I'm without the VPN I have no problems. I ...
1
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0answers
36 views

Can't set the openVPN without dns leaks

I found that I have leaks when I set my VPN through Terminal. I found couple thread and tried to use this method - How can you test for a DNS leak for an OpenVPN provider? I made everything, when I ...
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votes
2answers
70 views

How to edit /etc/hosts file [duplicate]

How to you edit the /etc/hosts file? My father put every video site on the internet on and he won't tell me how to get rid of it. I need an answer because tinypic and youtube are on it!
1
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0answers
35 views

Using pushed DNS from OpenVPN with NetworkManager on Trusty Tahr

My company provides me a VPN connection that also hosts a DNS server for names that are internal to the VPN. Currently, it sets all my traffic to route through the VPN, which works but is undesirable. ...
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0answers
17 views

Please explain the difference in nslookup replies

When I choose my ISP's nameserver and do this: set q=ns . then in ADDITIONAL section I can see root servers IP's. When I perform the same check on my BIND, I don't get to see the IP's. Not like it ...
1
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1answer
81 views

14.04 - DUC doesn't update correctly the IP with VPN at startup

I'm running an Ubuntu 14.04.3 LTS server that launches a few things at startup, two of them being OpenVPN for my VPN service and a Dynamic DNS Update Client to update my noip host to my current IP. ...
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0answers
215 views

Resolving Host in All Browsers

I'm a Linux newbie having serious connection problems in Ubuntu 15.04. Seemingly at random, all internet-related functions of my laptop stop working. Both Firefox and Chrome get stuck on "resolving ...
1
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1answer
173 views

/var/run/dnsmasq/resolv.conf nameserver contents

Xubuntu 15.10 using Ethernet From my understanding, /var/run/dnsmasq/resolv.conf should contain the nameservers used by dnsmasq to resolve addresses and is configured by a script called by ...
1
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0answers
448 views

network state DNS_PROBE_FINISHED_NO_INTERNET

Recently I bought a Hp pavilion 15 Notebook. Okey the problem is that when I'm on the internet afterba while of being connected, the pc leave receiving the signal of the Modem, and appears this ...
1
vote
1answer
63 views

dnsmasq resolver on different port

Im trying to use dnsmasq in conjunction with dnscrypt. I can't get dnsmasq to work with a server being a local address / non dns port. Is this possible? I've tried setting dnscrypt to 127.0.0.1 ...
0
votes
1answer
32 views

How to setup bind9 as simple name resolver?

What? I want to setup my own dns resolver. For everything that is not in 192.168.178.0/24 forward it to google dns (8.8.8.8 and 4.4.4.4 as fallback). So I just want to setup the nameserver of every ...
2
votes
0answers
26 views

painfuilly slow windows clients using bind on 14.04

I'm very new to Ubuntu (though I've installed 14.04 server a dozen times now) and Linux and I'm trying to replace my Win2003 server with Ubuntu 14.04 server. I have a brand new shiny HP Gen8 box and a ...
0
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0answers
44 views

High packet loss on Ubuntu 12.04.5 with working router

I am unable to connect to the internet on my Ubuntu 12.04 box using DHCP with a reserved IP address. There are a few facts that make this particularly mysterious: The router formerly seemed to ...
0
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0answers
68 views

Wired/Wireless connects and disconnects repeatedly

What I have tried: First thing I did was remove Ubuntu 15.04 and did a clean install via USB of Ubuntu 14.04. (Note: on all other computers that I have installed Linux on the network has started ...
0
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0answers
56 views

Ubuntu 14 - static IP - Connected but no internet

I have Ubuntu dual-booted and windows 7. The ethrenet connects not problems on windows 7 and a few days ago it was working fine on Ubuntu. I was and am using a static IP. I thought maybe a driver ...
6
votes
1answer
442 views

14.04 Resolving Host (DNS) Problem

EDIT: Could not solve the problem. After 7 years, I am going back to Windows. I have an Asus Zenbook UX32V. I installed Ubuntu 14.04 and now I cannot browse the Internet. When I connect to a ...
0
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0answers
108 views

How should I configure DNSMASQ for an IPv6 environment?

Id like to deliver IPv6 addresses (thats easy) and resolve DNS requests for Internet and local IPv6 clients (that's difficult), but I'm missing a comprehensive guide how to do this with DNSMASQ. There ...
0
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0answers
11 views

Is routing and maquaridng with virtual intfaces possible?

I'd like to connect two subnets by an Ubuntu server, but the machine has only one Ethernet adapter. The server should provide DHCP and DNS cache for the internal network by DNSMASQ. I'm not able to ...
0
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0answers
41 views

Name resolution not working

Installed Ubuntu 14 desktop a few months ago, in a dual boot environment. Everything was working fine till yesterday: accessing shared folders/files on windows/linux, browsing, printers, etc. Then I ...