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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9 views

Why do my .local dns names come and go?

On my home network, I have a raspberry pi 3 connected with WiFi, called gpopigo3. It is running Ubuntu mate. I also have a desktop computer running Ubuntu 18.04. The desktop’s ability to resolve ...
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DNS servers are not updating on kubuntu 20.04 when updating netplan config

Ok it is confusing so here is a clear version of what is going on. I am only able to set custom DNS servers using the /etc/netplan/01-network-manager-all.yaml if i use the cofiguration below with a ...
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distinguish us.archive.ubuntu.com downtime from DNS issue

Between approximately this time: Fri Jul 3 19:31:00 UTC 2020 and approximately this time: Fri Jul 3 20:31:00 UTC 2020 I couldn't install any packages from us.archive.ubuntu.com, but otherwise my ...
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Using BIND and DHCP together

I am currently using a home router as both DHCP server and DNS resolver like most home users. This is fine when a device wants to contact the outside world because the DNS works. When I want an ...
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Add mx record in linux - switching from postfix to hosting

I'm using ionos hosting and my domain's name servers are pointing to my static ip address where I've a linux server running. Recently I'm facing some issues with postfix, emails aren't sending and ...
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Custom DNS server [closed]

Here is my situation: I have a small Single Board Computer running armbian and set up as an AP with Network Manager. This board is also hosting a HTTP server allowing me to run a website from it on my ...
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59 views

Cannot ping GitHub

I cannot access to GitHub only on my Ubuntu 18.04 machine and all other machines (Windows PC, iPad, Phone) connected to the same network can access GitHub. When I try to ping GitHub, I get The result ...
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What should my /etc/network/interfaces look like

I’ve relatively new to Ubuntu/Linux and have been mainly following online guides to achieve what i would like. I think however, i have currently messed up my /etc/network/interfaces When I restart my ...
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How to set a static ip address on a local network using NetworkManager?

What I did I am trying to create a wifi connection with a static ip using NetworkManager. Following are the steps of that process using the nmcli command. Connection settings, I created a new ...
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Access ubuntu machine behind WIFI router using local domain name

I have an ubuntu machine connected behind a WIFI router which is connected to the internet. I have setup bind9 DNS on my ubuntu machine and assigned a local domain name "myserver.cloud". I ...
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Reverse DNS Lookup Not Functioning Properly

I recently set up a server running Ubuntu 18.04 Server on my local network in a DMZ. I am trying to run it as a mail server, among other things. I had been running a mail server on a desktop PC on the ...
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DNS Not Working for School Domain Names on 18.04 [closed]

I'm having a weird problem with DNS. It's not working for my school's (msoe.edu) domain lookups on my desktop PC, but appears to function properly on all my other devices. All other domains' lookups ...
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How to alias addresses in my network for ssh / http connections?

I want to be able to do: ssh user_name@bla where bla points to a specific ip address Same, but from browser, I want to access http://blabla where blabla is another specific ip address with a port (i....
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Can I force wget to use the secondary dns

I am trying to download something from NVIDIA website on a remote server using ssh. Iran is banned by the NVIDIA website. My server's DNS servers are: IP4.DNS[1]: 192.168....
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Uubuntu 18.04 LTS AD domain joining

I have Ubuntu 18.04 LTS VM client and wants to join to AD domain, I have followed realmd and SSD to join the machine to domain. It was successful, it has joined to one particular domain, where I have ...
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Openconnect VPN connecting, but work sites giving DNS_PROBE_FINISHED_NXDOMAIN

EDIT: I have no idea why, but if I connect to NordVPN, then disconnect, my work VPN through openconnect works as it should. I can access all work and non-work sites as intended. Maybe this will shed ...
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Wireguard connects successfully but not internet

I am given two wireguard config files by the company I work for. I have setup one on my android phone and it works perfectly and another one on my ubuntu. It used to work for a day or two but suddenly ...
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Temporary failure resolving error when trying to install google chrome

My board has Ubuntu Linux 16.04.6, and I am trying to install google chrome by using the process described here. Two first steps are going smoothly: 1) wget -q -O - https://dl.google.com/linux/...
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What happens with wifi after boot or reboot in Ubuntu 20.04? A clue to slow wifi

As many others I have a problem with sometimes slow wifi in Ubuntu 20.04. I've tried everything except changing the kernel but nothing has helped. The ONLY thing I can say with certainty is that it ...
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Cant ping with UFW enabled

I am having an issue with UFW on Ubuntu 20.04. I am running a Nextcloud server on this machine, and my default is to deny incoming and outgoing, except for port 443 which works fine. This is causing ...
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Ubuntu 16.04 LAN connections but no WAN (ESXi 6.0 VM)

We are working on setting up Ubuntu and have set up three different static IP's on Eth0 and virtual adapters. They are all working properly, but now we have an issue as we cannot ping 8.8.8.8 or ...
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37 views

Wireguard resets its DNS settings on 20.04

Wireguard resets its DNS settings on restart. I have WG tunnel with following settings: [Interface] Address = 10.8.0.2/32 Address = <public IPv6 ip> DNS = 2001:4860:4860::8888 DNS = 2001:4860:...
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systemd-resolved is using wrong interface for resolving

I use openconnect for VPN. It works well in terminal and resolves all domains, but when using NetworkManager GUI systemd-resolved fails to correctly resolve names, even though all the setting seem ...
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43 views

How to SSH to Ubuntu with dynamic IP

I want to be able to SSH to my home computer with lubuntu 18.04 from my tablet computer when I am not at home. I need this access to practice in programming when I cannot be in front of computer. I ...
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Periodically unable to resolve .local hostname

I've got a server on my LAN, let's say it's hostname is server. Periodically I will suddenly be unable to reach the server using server.local. I will get an error which looks like: server.local: ...
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Can not change DNS settings in Ubuntu 20 desktop

$ uname -a Linux pintu 5.4.0-33-generic #37-Ubuntu SMP Thu May 21 12:53:59 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux I am trying to set my DNS resolver to a server I run with my own IP whitelisted. I ...
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Trouble with basic networking of an Ubuntu Linux server edition server

As an introduction, what I am trying to do is get my Linux Ubuntu server online and start sharing files with the internet and locally with my family, hosting Wordpress.org pages, and other things of ...
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41 views

openVPN client configuration of ip address

I am confused with regard to the correct ip address to use when a remote client tries to connect to the server running on Ubuntu 18.04. Details of ip's on the server: openVPN server 10.8.0.1 port ...
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Netplan configurations stop working after some time

I have this Ubuntu Server 18.04 LTS running and recently I changed my router subnet to 10.10.1.X. Also, I set DHCP to assign from 10.10.1.105 - 10.10.1.253 to other devices, since I want 100,101,102 ...
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Access webserver of a connected ethernet device

I have a device with a built-in webserver that allows the configuration of the device. I want to connect this device directly with my Ubuntu 18.04 notebook via an ethernet cable and access the ...
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101 views

systemd-resolve does not forward DNS requests to stated DNS server

Anyone know how systemd-resolve voodo works? 192.168.1.30is the correct DNS server for my network, as returned by DHCP. /etc/resolv.conf points to 127.0.0.53 Systemd claims to be using the correct ...
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Why would Ubuntu treat NXDOMAIN as resolving to localhost?

Every time I should be getting an error because a domain does not exist (e.g. could not resolve host), I instead get an error about connecting to a loopback address: $ curl -4 -v https://nonexist....
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sudoers can not edit network settings

I have two users which I have defined as sudoers in /etc/sudoers which looks like this: Defaults env_reset Defaults mail_badpass Defaults secure_path="/usr/local/sbin:/usr/local/...
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150 views

Problem with DNS with OpenVPN on Ubuntu 20.04

I have installed the OpenVPN server and the Bind9 DNS server on the company server. The part of the server config is below. The important part is a pushing route and DHCP DNS option. local 10.0.9.2 ...
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36 views

Nameserver is absent on system restart

Ubuntu 18.04 I have an issue with systemd resolve --status on system restart. Here is the output $ sudo systemd-resolve status status: resolve call failed: Unit dbus-org.freedesktop.resolve1.service ...
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problem using pritunl VPN client on ubuntu 20.04 due to faulty DNS resolution

I am having problems using a VPN with the pritunl client on Ubuntu 20.04. When using the VPN, I am able to get pings (i.e. ping 8.8.8.8 is fine), but websites are not loading. From searching online, ...
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57 views

Error: Authentication Required for wireless connection Ubuntu 20.04

Whenever i try to connect to wifi it says "Authentication required", even after entering right password, same window pops up. I also tried to connect to wifi from CLI it says "Connection Activation ...
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DNS problem ubuntu app 20.04

I install ubuntu app on my windows 10 host machine and everything is working properly except my DNS configuration! I tried it with a yamel script and defined the ip and name server but it doesn't work ...
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109 views

Failed to enable unit: Unit file named.service does not exist

everyone After installing bind9 apt install -y bind9 bind9utils bind9-doc dnsutils I want to enable named service. systemctl enable named But I get this error: Failed to enable unit: Unit file ...
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how to make nslookup on client to return gateway IP for a dns on server

I'm a newbie on networking and I'm looking for a way to report gateway's IP address instead of server IP address on a client, in a simple 1server, 1client and 1 gateway setup. (in ubuntu 16.04) I ...
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307 views

DNS issues after upgrading to 20.04

After upgrading to 20.04, both my wired and wireless networking lost access to the internet. I confirmed my drivers were working when I was able to resolve a ping to the Google nameserver 8.8.8.8. Now,...
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What exactly is an FQDA and how does it relate to multiple dynamic domain addresses?

I've had a Linux box running here for years. It is pointed to by first.second.net and first1.second.net as rented from no-ip, and there's a script to tell no-ip what the outside IP address is for my ...
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39 views

LTE 4G module, connected, ping ok, dns ok, but can't browse internet

I've been using kubuntu for quite a while, before posting here I made a lot of research but wasn't able to solve my problem, hope someone here can help me getting things to work. I have this Lenovo ...
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27 views

Slow pip installation issue possibly related to DNS configuration [duplicate]

I am a total newbie here, so pardon my limited knowledge on network configuration. Context I'm using Ubuntu 18.04 LTS and it is a bash shell I am using not a disk image. So, certain commands may not ...
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301 views

Ubuntu 20.04 “Temporary failure in name resolution” - recently reinstalled

I rent a vps from contabo for about half a year now, it worked fine until now, because it started producing "Temporary failure in name resolution" errors. I read that this is a DNS error, I tried ...
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(error code 28) Resolving timed out after 5000 milliseconds Ubuntu server - DNS?

Intent: I am trying to load images programmatically using cUrl, into Prestashop in a XAMP via SSH. What I tried: I have looked around and the issue may be on the setup of the server. I tried to change ...
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Can not connect to google

I am using ubuntu 20.04 with hp laptop with rtl8723be driver. I can not connect to google when on wifi. I can access other url. Google shows this error in browser This site can’t be reached www....
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Problems resolving api.spotify.com on ubuntu server 20.04

I recognized that my spotty Plugin for my squeezebox logitech mediaserver didn't work anymore. It git listed as a stream-recieving device but didn't begin to play. After poking around a bit I found ...
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55 views

Netplan not honored on system boot

My system has services that talks to other servers on the LAN by custom internal domain name. I have netplan setup as follows: network: ethernets: ens160: addresses: ...
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148 views

How to setup Bind9 on ubuntu server 20.04 /DNS issue- bind9

I installed Ubuntu Server 20.04 LTS, yesterday, how do I setup bind9 to point to my domain Sturtz.ml, I got my domain with Freenom and I am using Cloudflare I will share the files if you ask for, I ...

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