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Questions tagged [dns]

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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Ubuntu 18.04 ignores DNS pushed by openvpn

I read threads like Ubuntu 18.04 no DNS resolution when connected to openvpn and https://serverfault.com/questions/528773/networkmanager-is-not-changing-etc-resolv-conf-after-openvpn-dns-push plus ...
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home server DNS with dnsmasq

Pulling my hair for days here setting up DNS and DHCP with dnsmasq and the new way of doing things with netplan. WAN-router is on 192.168.0.1 - works fine LAN-router is on 192.168.1.1 - DHCP works ...
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How can I create a local DNS that is seen from other computers on my local network?

I'm trying to create a local DNS on my computer so I can access it locally with a DNS address instead of an IP. The first thing that I did was to configure my hostname on the files /etc/hosts and /etc/...
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Ubuntu laptop as gateway to internet, send traffic back to Beagleboard

I have a PocketBeagle computer board without a wireless adapter of its own. Its only connection is a USB cable to my ubuntu laptop. I am able to ssh the PocketBeagle through this connection over 192....
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Issue with the my work Okta domain (mywork.okta.com) and openconnect VPN

Since version 14 (and now 18.04), when connecting on my job cisco VPN (with openConnect), I always struggle to have the local domains working correctly. Wen wire connected from my job, everything is ...
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Can't ping Windows server by hostname for AD DC Samba integration

I'm attempting to setup a samba share on our Ubuntu server at work to integrate with our Windows Domain Controller for the folder permissions. However I am unable to ping mcsvsdc.local which is the ...
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Can't use DNS name instead of ip for jdbc connection on local network

I have the following connectionString for my db: jdbc:sqlserver://{someIpAdress}:1433;database=db I want to resolve someIpAdress to the DNS name instead. By running nslookup on the ip I get the ...
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DNS over TLS with systemd-resolved

Folks, I was trying to enable DNS over TLS via systemd-resolved. I changed /etc/systemd/resolved.conf as follows: [Resolve] DNS=1.1.1.1 #FallbackDNS= Domains=~. #LLMNR=no #MulticastDNS=no #DNSSEC=no ...
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dns server set up

I am trying to install a dns server and after running sudo named-checkzone ostechnix.lan /etc/bind/for.austen.lan. I get the error zone austen.lan/IN: NS 'pri.austen.lan.austen.lan' has no address ...
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Wired Connection DNS_PROBE_FINISHED_BAD_CONFIG error on Ubuntu 16.04

I have a Dlink DIR-113 device which acts as a repeater / bridge. It is connected to the main router (D-Link DSL-2750U) via an ethernet cable. When I connect one end of ethernet cable to this repeater ...
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How can I refresh resolv.conf after changing the resolv options in the interfaces file?

After bringing up a dhcp controlled instance in AWS I have made changes to the /etc/network/interfaces file for custom nameserver and DNS search strings: auto lo auto eth0 iface lo inet loopback dns-...
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Go back to my servers IP instead of domain

So I had this server I set up a while back... made it so it pointed had a couple domains in the vhost. And I just got rid of the domains and want to use it mostly for developing stuff / a sandbox now. ...
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Installing specific versions of bind (apt-get)

I'm trying to set up a proof-of-concept network with a vulnerable DNS server (through bind9). I was wondering if there's any way to use apt-get to install older versions of bind9 (specifically 9.10.X ...
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Where is the proper place to add a custom DNS IP to an ubuntu 16.04 server that is using DHCP?

I'm a bit confused as to the proper place to add custom DNS entries for a server that uses DHCP. This instance is in AWS but I have a custom DNS server that it needs to use as it's primary name server....
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How can I make apache redrect to www subdomain?

I have the following in sites-available <VirtualHost *:80> DocumentRoot /var/www/html/mywrk DirectoryIndex index.php ServerName www.mydomain.com <Directory "/var/www/html/...
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bind9 problem - named: user 'bindi' unknown

I've installed bind9 on ubuntu 18.04 desktop version some days ago and worked fine... There are many tutorial for this DNS, but this was easy and maybe ubuntu specific: Configuration I've used the ...
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Specifying a different DNS server for specific domains in Ubuntu 18.04

I currently have an Ubuntu 18.04 install with two NICs, which are connected to different LANs where various services are available. Both NICs are setup correctly. I can ping hosts on both LANs by IP ...
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Bridge the Ethernet connection to another machine from an Internet connection on laptop

I have a problem about to bridge the Ethernet connection of laptop running on Ubuntu 16.04 to another Ubuntu 18.04 machine as follows and appreciate for whatever comments. Laptop with static IP 192....
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Ubuntu 18.04: Every now and then Organization-wide DNS stops working

I have a new installation of Ubuntu 18.04 on a machine and for a while it worked just fine. But recently after many updates I required it to restart and since then DNS suddenly stopped working (I had ...
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1answer
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Ubuntu 18.10 wifi not working at starbucks

I had this problem with 18.04. Adding an entry to /etc/hosts as mentioned in this bug report. In 18.10, that does not work. I get an IP assigned via DHCP, but never get the login page. ...
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Can't get service noip2 to start on boot [duplicate]

I have installed no-ip dynamic ddns following this guide: https://www.noip.com/support/knowledgebase/installing-the-linux-dynamic-update-client/ I get the service running by sudo /usr/local/bin/...
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Bind9 not detected by the system

I finally figured out how to configure bind9 or so i thought, Because it was working a few months ago, Then when i rebooted my computer after updating bind9 is just acting really weird I tried ...
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1answer
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Check for DNS leaks on ubuntu server

I currently run Ubuntu server 18.04.1 LTS. I hav setup split tunnel VPN and it seems to work fine, however I want to check for DNS leaks. Is there a way to do this with the command-line? Can't really ...
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Adding options to resolv.conf on Ubuntu Core

I would like to change the DNS timeout in resolv.conf on Ubuntu core. The resolv.conf is generated by resolvconf from the files in /etc/resolvconf/resolv.conf.d and the interface config. The files ...
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after upgrading to 18.10 DNS configured in my anyconnect compatible VPN seems to be ignored

after upgrading to 18.10 DNS configured in my cisco anyconnect compatible VPN seems to be ignored. I'm just getting some errors like "systemd-resolved[939]: Server returned error NXDOMAIN, mitigating ...
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How to setup my own dns VPN server?

How to setup my own DNS VPN server on Ubuntu, such as YourFreedom DNS connection? YourFreedom is using DNS port 53 for VPN. İs it possible to use in OpenVPN config file?
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No Internet connection after disconnecting from VPN in Ubuntu 18.04

In Ubuntu 16.04 I had no problems with VPN: after disconnecting I had Internet. In Ubuntu 18.04 I have no Internet after disconnecting from the VPN. I can actually ping 8.8.8.8 but not www.google.com ...
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1answer
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16.04 and 17.04 in Hyper-V does not resolve names on the network

I am using vagrant for the development and recently had to switch from VirtualBox to Hyper-V due to the requirement of developing for docker in windows. I have modified my vagrant files to use hyper-v ...
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access local DNS

I installed Ubuntu 18.04 on VMware player without issue, but when I try to install network printer (IP: 192.168.1.88 name: p2055dn), it can't locate p2055dn. ping 192.168.1.88 => PING 192.168.1.88 (...
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Ubuntu Server DNS Package Inspector

I'm looking to create a server that can track DNS queries to it. I have a domain name with Namecheap and for a project need to create a server that can log all incoming DNS queries. Is Ubuntu Server ...
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172 views

DNS problem with mullvad VPN on 18.10

My mullvad VPN was working, then I upgraded to 18.10. Now when I use their UI client, it connects fine, but DNS is not working. I can ping google.com by IP but not by google.com. I can resolve it by ...
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Ubuntu 18.04.1 LTS Cloudflare DNS Not working

I update the Cloudflare DNS 1.1.1.1 via TP link Router it's work perfectly on my Mobile devices & other systems but It does not work perfectly in the system installed Ubuntu 18.04 LTS (Latest ...
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dns problem in samba addc

auto eth0 iface eth0 inet static address 192.168.1.254 netmask 255.255.255.0 gateway 192.168.1.1 network 192.168.1.0 broadcast 192.168.1.255 dns-nameservers 8.8.8.8 192.168.1.254 dns-search ...
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Ubuntu 16.04 not allowing dns queries from local reverse proxy

So I know this is not ideal but I have it set up so that all my queries to my external facing services go to the internet then back to local since I have not yet configured the proper DNS records here....
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nsswitch.conf when only want mDNS to handle .local

Really just looking for some confirmation here. I want to use mDNS to look up names in the .local domain (and nothing else.) I don't expect names in the .local domain to be resolved any other way. ...
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Ubuntu - Basic Host Name Resolution 18.04 Issues

Ok.. a bit new to ubuntu.. but not linux. Seems very simple. I need to ping my FQDN of host (VM) and get response back with its routable IP. I know my DNS forward and reverse IP lookup resolves via ...
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Using dnsmasq broke dig and more

I am trying to set up dnsmasq as an address resolver on an Ubuntu 18.10. So far I disabled systemd-resolved as the default resolver and brought dnsmasq in. Running netstat -tulpn shows the following: ...
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How to fix the DNS server inside a VMware for Docker containers?

I am running OSM v4 on Docker on Ubuntu 16.04 on VMware on Windows 10. During the OSM installation though, I got errors when the installation process attempts to create and run the docker containers....
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dns slowness issues after upgrading to 18.10

Is it only me having very serious dns lookup slowness issues? How can we help troubleshoot/log/debug it? Thanks in advance!
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How to add an address to DNS

My system is Ubuntu 18.04 (Bionic Beaver). And I want to add 172.26.5.14 to system DNS addresses. I searched and found some solutions like: Add to /etc/resolv.conf. But data removed neither ...
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Can't use DNS resolver even though I added to /etc/resolv.conf

I'm using a custom Ubuntu and I can't seem to use a DNS resolver. I updated my /etc/resolv.conf file so it would contain the line nameserver 8.8.8.8: # cat /etc/resolv.conf nameserver 8.8.8.8 but ...
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My Wi-Fi and DNS configuration completely messed up after installation of KDE connect

I need help to restore my Wi-Fi and DNS settings to previous state like was before installation of KDE connect. Now I have unstable Wi-Fi (every few minutes disconnect), I can ping, mtr from terminal ...
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ubuntu-Server 14.04 setup with 2 Lan's and virtualmin

I have Ubuntu-Server 14.04(64AMD) and Gnome Desktop setup on an HP x9400 Workstation. The workstation has 2, 4 core Opteron processors, 2 Nvidia DVI video outputs and 2 LAN's on an Nvidia MCP55, with ...
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Subdomains get NXDOMAIN on Ubuntu Desktop 16.04 - How to debug?

Problem Many (or all?) subdomains like files.slack.com and guide.elm-lang.org get DNS_PROBE_FINISHED_NXDOMAIN on Chrome. Using nslookup returns: Server: 127.0.1.1 Address: 127.0.1.1#53 ** ...
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problem with repetitive, frequent dns lookup

This is on Ubuntu 18.04. I have a problem where a dns lookup gets 'stuck' where it will continually repeat the same dns lookup very fast. This can be a 2 or 3 hundred requests a minute. Sometimes ...
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How do I disable systemd-resolved and replace with something sane on Ubuntu 18?

I've decided systemd-resolved is irretrievably broken garbage and I'd like to replace. I've got my own local DNS server at 192.168.1.2 I'd like. I'd also like to connect to a VPN with NetExtender ...
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Cannot access to Zentyal domain through the Windows computers

I have created a domain using Zentyal server(version 5.1) and connected Windows computers(Windows 7) to it successfully. I am working to connect those Windows clients to the Zentyal server that ...
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domain name and subdomain pointing to default apache and webmin

I have recently setup Ubuntu Server 18.04 on an old but still decent laptop. Have installed apache2, php, mysql etc. and webmin. Have done the port forwarding in my router and when I access my ...
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How can I add my Windows DNS Nameserver to my client Ubuntu Server?

Details My organization uses a Windows DNS server, and I am unable to add it to my client ubuntu server. According to the Ubuntu Server 16.04 guide (page 42 & 43, section 1.3.1) if I interpret ...
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How do I make two Ubuntu machines in vmware to ping each other?

Do I need to install special tools for that, or is it all just networking settings ? I've seen people do this in windows machines on vmware but never with ubuntu Both ubuntu machines have this ...