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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96 views

dnsmasq doesn't check dnssec

I'm on Ubuntu 14.04.2 LTS. NetworkManager starts dnsmasq with --proxy-dnssec option. However: $ dig @127.0.1.1 dnssec-failed.org ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: ...
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7 views

Setup hostnames for pptp clients instead of addresses

I have a pptp server and I want to setup a hostname (DNS entry) for the clients to use instead of IP addresses. I tried adding to my /etc/hosts file but that didn't seem to affect the pptp clients. ...
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0answers
63 views

How can I use a Linux BIND DNS server for my Windows Active Directory forest?

How can I use a Linux BIND DNS server for my Windows Active Directory forest? We trying to avoid having the Windows Sever 2008 AD domain controller host DNS at all. We want to use Ubuntu Server with ...
0
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1answer
32 views

Troubleshoot personal internet failure

I have Ubuntu 14.04 and we have Wifi in the house. Lately (every 2 days), my laptop fails to connect. The Wifi sign loads forever (you know the white lines going bottom-up recursively). The issue is ...
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1answer
92 views

DNS cache on Ubuntu

Is it true that Ubuntu doesn't have DNS cache by default and what options I have to enable it ? Is bind9 option that can enable caching of DNS ?
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1answer
85 views

Bind9 Name Server slave having master file transfer problems

I have a master name server set up and now I am trying to configure the slave. Bind9 appears to load and run fine, however I am getting the following error: Apr 27 12:47:21 ns2 named[23563]: dumping ...
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1answer
69 views

DNS lookup sometimes failing for git clone

Every so often when I try to clone or pull a Git repository from my private hosted Gitlab server I get an error stating that the name or host could not be resolved. I figured this was because a DNS ...
2
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0answers
73 views

Websites not loading in Ubuntu in both chrome and firefox

I am running ubuntu 14.04 and i am using a DSL Connection.From last few days i am having problem in loading some websites like ubuntuforums, hackerrank, mdn etc. I have tried alsmost all solutions ...
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18 views

DNS issue in Kubuntu 15.10 on campus network - DNS not resolving except when connected through one particular wifi router

I'm facing a weird DNS issue. I'm on a campus network. My laptop runs Kubuntu 15.10. When I connect from my dorm room wireless router (which is also on the campus network), everything is fine, I can ...
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1answer
311 views

Problem with IPv6 sudo apt-get update/upgrade

I am using Ubuntu 16.04 Beta 2 at the moment and every time I try to update at home via sudo apt-get update or upgrade trough sudo apt-get upgrade I wont get any feedback. Even installing of anything ...
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18 views

why ubuntu can parse a ip address from domain(ex:www.facebook.com) when I had modified it's dns server to host that no exist?(I had reboot.)

why ubuntu can parse a ip address from domain(ex:www.facebook.com,i never visit it before.) when I had modified it's dns server to host that no exist?(I had reboot.) root@iZ25kzpxgdzZ:~# cat /etc/...
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1answer
233 views

Unable to ping hostname only IP address

I'm trying to connect to my linux server via the hostname for Samba. I'm have been able to access it with no problem then all of a sudden it stopped working. Here is what is happening. This is what I ...
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1answer
42 views

Block IP beginning with, U.F.W

Someone is running a registration bot on my site and I have taken steps to prevent the registration, but now I want to block the whole IP range from even being able to access my site. I have set up ...
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0answers
13 views

DNS issues when ever I switch networks

I am having DNS issues, where when ever I switch networks, I can only access IP addresses, no domain names. I then run: $ sudo dpkg-reconfigure resolvconf which allows me to then start using the ...
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0answers
21 views

How to use query options with 'dig'command

I'm using Ubuntu 14.04 LTS (kernel 3.19.0-58-generic). I' m facing issue when running 'dig' with query options like +trace. When I use dig w/o query options everything works predictable, but if I ...
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1answer
67 views

Setting up domain with LAMP server

Not sure if this is the best forum so let me know and I'll delete it if so. I've setup a LAMP server on Ubuntu 14.04 which works fine the issue is, right now I can only access it through the public ...
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0answers
42 views

Nmap proxy and dns resolution

How to use nmap and dns resolution of nmap over proxy? I tried proxychains, but for dns resolution it doesn't work, it's known bug as I read on some forums. It works well without dns_proxy feature in ...
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2answers
45 views

how do I access linux machines by name on the network?

I run a home office and I have a number of linux boxes and mac machines. I'd like for people to be able to ssh into the various machines without having to remember each machines ip, by using the ...
0
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1answer
69 views

dns server assigned from dhcp is equal to the address of the client

I had the following enviroment configuration: http://i.imgur.com/9chRJT8.png Ubuntu VM /etc/network/interfaces: auto eth0 iface eth0 inet static address 192.168.10.11 netmask 255.255.255.0 ...
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1answer
110 views

resolveconf -u keeps adding an unwanted search domain to resolve.conf

I have my desktop computer configured with a static IP address: However, /etc/resolve.conf keeps getting overwritten with: nameserver 127.0.0.1 search localdomain example.com This seems to ...
2
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2answers
110 views

Static IP in ubuntu server 15.10

I know there's a lot of this kind of questions and tutorials about setting static ips, but I've tried everything and still I can't manage to get a static ip. Internet's working fine (I can ping google....
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0answers
17 views

Two Dns working together: one for lan one for wifi

I have two network interfaces on my laptop: eth0 10.0.0.2 gw 10.0.0.1 dns 156.0.0.1 wifi0 192.168.1.2 gw 192.168.1.1 dns 8.8.8.8 When I ping sample.local I would like to use 150.0.0.1 as the DNS ...
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votes
1answer
57 views

How do I enable Bonjour/Avahi lookups in all tools?

Although I've got numerous Avahi packages installed, I can't seem to get something like "ping myhost.local" to resolve. But "avahi-browse --all" does return results. The device I'm trying to reach can ...
4
votes
2answers
3k views

What is difference between localhost address 127.0.0.1 and 127.0.1.1

I am just learning using Ubuntu and when I tried to configure the DNS, I need to deal with something call localhost, loopback interface. Can anyone explain me the differences between them and the ...
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0answers
45 views

Can not access internet or Router with Ubuntu Server 14.04.3

I have installed Ubuntu Server 14.04.3 and set-up a static IP address, after I had applied the static IP as below im not a ble to access the internet by the server, when I try to ping google.com I get ...
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1answer
56 views

debian host resolving error

I have some problem with resolving hostnames with ping and in my browser. If I ping any non-existent domain name (as jhdevjfejbhbdufb.com), I get local IP adress as a response (external ip). But ...
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1answer
140 views

DNS Server with bind9 cannot resolve reverse zone

I have recently reconfigured my network and am trying to go through the process of changing all the servers over. In the process of doing this, I found that my dns/dhcp servers are having some issues. ...
0
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1answer
59 views

Dns problem ubuntu server

I recently downloaded the ubuntu server 14.04 and I wanted to use the webmin, there's no error in installation and every thing sounds good. I tried to put in browser https://name_server:10000 but ...
1
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1answer
47 views

Avahi works on one computer but not on another

I've searched for clues to this problem for days, hope someone here can shed some light. I know I can use IP addresses only for this simple case and I know about other solutions like DNSmasq, but I'm ...
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0answers
21 views

How to setup a web server and 2 name server with just 2 machines?

I am trying to create a web server at home but I am having some trouble when it comes to the DNS part. Problem is that I want to have my own nameservers like: ns1.mydomain.com and ns2.mydomain.com ...
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1answer
99 views

name resolution: host command works, but not ping

This question as a lot of duplicate, but none of them applies to my setup. This baffles me, as my setup is relatively simple: Setup I have no mdns in my /etc/nsswitch.conf # cat /etc/nsswitch.conf ...
1
vote
1answer
92 views

Record All Websites Visited

I have a home network with about 5 computers (all Windows except 1 Ubuntu), and 4 smartphones. My current set-up is all devices connect directly to the router. I am wanting to keep a log of all ...
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0answers
60 views

DNS fails intermittently (14.04LTS)

I have a laptop that connects wireless to my office network and runs a VPN over the network. I'm experiencing intermittent domain name resolution failures. They might last a few seconds or closer to ...
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0answers
107 views

DNS query refused when using Android tethering

I'm using Ubuntu Desktop 14.04.4 and trying to use Android 6.0.1 tethering. Both WiFi and USB connection to the phone seem to be managed well by Network Manager, but the DNS is not working properly. ...
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0answers
81 views

nslookup works, ping doesn't (for any domain)

Overnight, one of my servers stopped resolving DNS records. I can still use nslookup, dig, and host to look up records, but ping, curl, and so forth give me "unknown host" errors. I could find plenty ...
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0answers
78 views

zone transfer file is denied

I am implementing this in my home network so If I swap the role from master to slave[ this machine should work [ as primary server for ns.insec and slave server for not.insec] in machine 1 and in ...
1
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1answer
207 views

zone transfer denied

I spent many hours to fix my problem but I did not get it done what I needed to fix this issue.I assume may be some problem with file permission.I changed I wanted to verify the zone transfer from ...
0
votes
2answers
273 views

Is it possible to set up multiple local domains on localhost in Ubuntu 14.04?

I need unique, multiple domains all linked to my computer's local ip address. This is for testing purposes. I want to be able to have different local domains linked to different html files on my ...
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0answers
65 views

DNS sometimes stops working, resetting wifi helps for a while

Got a bit of a strange issue here, My wifi seems to work just fine for about 3 minutes allowing me to browse the internet, ssh etc. Then it stays connected but does not resolve any new websites I ...
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votes
1answer
159 views

How to access websites from my web server remotely?

I am new to creating and managing dedicated web server. I have installed Ubuntu Server 14.04 LTS on this machine with LAMP and SSH packages. I created some testing sites, and they work if I try to ...
0
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0answers
31 views

DNS works randomly on internal Network

I am sorry for the title already but I couldn't find anything better. Basically what I have is that I am on a network ad-hoc, an internal network created via a router to which I have all access I ...
0
votes
1answer
73 views

Ubuntu server + Dynamic DNS

I've got a Ubuntu 14.04 server running with an Dynamic DNS client. I'm using Dynamic DNS because my ISP changes my WAN IP once in a while. I made a no-ip.org DNS name to connect remotely to my ...
0
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0answers
1k views

Connection timed out; no servers could be reached error

While trying to ping www.google.com I was getting the error: ;; connection timed out; no servers could be reached I was neither able to run sudo apt-get update and nor able to access any ...
0
votes
1answer
173 views

Use /etc/hosts to direct wildcard domain name

I searched this term and didn't find my answer: "wildcard domain name in hosts" I have a HostGator account where I create secret domains so I can build and test websites. In order to use them, I add ...
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0answers
57 views

unable to resolv host name ssh google.com ubuntu

I am getting error when using ssh google.com saying could not resolve host address. I think my dns is not properly configured but how do i fix it, i tried many suggestions but cannot fix it i don;t ...
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0answers
17 views

Unable to access institute website on institute lan

I'm unable to open my institute website (including the main website, library website, webmail login) on my institute LAN or WiFi connection on my laptop. I'm, however, able to open every other ...
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0answers
52 views

I can browse any website except of Facebook and Youtube

I have Ubuntu and archlinux running on different boxes. Along with and Android phone. which i can't open Facebook or Youtube in the browsers (Firefox, Chrome). Error message: Server not found. I can ...
0
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1answer
101 views

Can't access Outlook.com from Ubuntu

I did a clean install of of Ubuntu few weeks ago (was working on Windows10). I am facing this totally frustrating problem. I cannot access my hotmail/outlook account. I get to the site, i enter my ...
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0answers
75 views

How to prevent ISP DNS from appearing in resolv.conf with a VPN connection?

Ubuntu 15.10 and dns=dnsmasq is commented out in /etc/NetworkManager/NetworkManager.conf OpenVPN through NetworkManager. Before I connect to a VPN /etc/resolv.conf contains nameserver 2xx.xx.xx.xx &...
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0answers
75 views

OEM install asking for nameservers after oem-config-prepare

I'm trying to create an install image of server 15.10 that I can deploy to a few dozen machines by running through the OEM install, customizing packages and settings, then running "oem-config-prepare"....