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Questions tagged [dns]

Translates domain names to IP addresses. DNS stands for Domain Name System.

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Why request a zone file after a domain transfer?

One of my domains was recently transferred to another company. That person has now requested that I also send them a zone file. I have started reading about zone files, but am still pretty confused. ...
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How come this query shows the same address for non-authoritative answers and authoritative answers?

So, if i query slash16.org: nslookup -type=ns slash16.org Non-authoritative answer: slash16.org nameserver = ns-686.awsdns-21.net. slash16.org nameserver = ns-1989.awsdns-56.co.uk. slash16.org ...
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How to split DNS resolution per domain?

I would like on my Windows 10 to resolve DNS addresses on different DNS servers, based on the domain. In practical terms, I would like *.example.com to be resolved by 10.10.10.10 and the rest by 10....
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2answers
6 views

CentOS bind9 server keeps getting error messages from master ADDNS

For the last couple of days, I have been trying to connect my Bind9 server to my AD's DNS as a secondary zone, to no avail. This is all done on VMware, with pfSense connecting the two (yes port 53 ...
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8 views

DNS over VPN service

I have OpenVPN server with few devices connected in (web server, Raspberry Pi, netbook and phones). I want to create DNS over VPN (custom .vpn domain). I done it with dnsmasq and address directive ...
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1answer
18 views

DNSCrypt: How to prevent Windows from resolving blacklisted names?

I set up DNSCrypt in Windows 10 and disabled the DNS Client service, which caches and resolves DNS. Then, for testing purpose, I put *google* in the DNSCrypt block list and tried to resolve the name. ...
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1answer
32 views

Network Troubleshooting [on hold]

Two hosts on the Internet are trying to communicate with each other via FTP. Each host can ping the other host, and you can telnet between them. There are no firewalls between the two house but the ...
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9 views

How to debug local named with broken dnssec

After a recent upgrade of my Arch Linux packages (and reboot), I found that DNS requests were no longer working. I traced the problem to my local BIND configuration. I have /etc/resolv.conf pointing ...
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30 views

Proper IP management for home lab [on hold]

I have been setting up a home lab with LXC, containers running mediawiki, redmine, haproxy, etc. powerdns for dns. I have been originally planning on using static ips for my containers, but I have ...
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1answer
15 views

Part wildcard in hosts subdomain possible?

On our server we've got a lot of redirects for specific subdomains, which always end in the same: 127.0.0.1 abc-thesame.domain.com 127.0.0.1 def-thesame.domain.com 127.0.0.1 xyz-thesame....
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2answers
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Can 'Obtain DNS server address automatically' be used as a fallback to my preferred DNS server?

I spend quite a lot of time in a nearby coffee shop, and as a result also use their internet a lot. The problem is that the DNS servers their network offers by default are terribly slow (~1s per ...
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1answer
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What Should Be My hostname and FQDN to Exim4?

My EXIM4 started to display error after I perform a sudo apt upgrade, now some servers return this message: SMTP error from remote mail server after HELO mycompanyname: 504 5.5.2 : Helo command ...
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22 views

How do other websites detect my DNS leaks?

There are websites on the internet that discover if, when using a VPN, you expose DNS leaks to your ISP like dnsleaktest.com My question basically boils down to this: how do these services work? I ...
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0answers
8 views

OpenVPN: DNS over encrypted channel

I'm testing a setup which is as follows: Machine A has a Firefox instance which is configured to connect to Machine B via SOCKS v5 at a given port. Machine B has an Alpine Linux Docker container ...
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0answers
6 views

Set up a staging site, unable to access it [on hold]

I currently am in the process of trying to change the theme I am using for my website. My hosting provider offers a staging service that I am using so I can redesign my website with the new theme ...
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0answers
17 views

Can't visit some websites in Ubuntu [on hold]

I have Ubuntu 18.04, many times when I want to visit some website, my browser (Chrome, Firefox) won't open site. sometimes solve my problem whit reboot OS or enable VPN. I connect to Internet from ...
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1answer
102 views

Why does Cloudflare's DNS not resolve some DuckDNS domains, while Google's does?

I got this today: C:\Users\me>nslookup box.duckdns.org 1.1.1.1 Server: 1dot1dot1dot1.cloudflare-dns.com Address: 1.1.1.1 *** 1dot1dot1dot1.cloudflare-dns.com can't find box.duckdns.org: Server ...
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0answers
47 views

Is it normal for a large HOSTS file where all entries point to 0.0.0.0 to take a very long time to update the DNS cache?

I have an old laptop (Core 2 Duo U9400 @ 1.4Ghz) which struggles with the modern internet. I wanted to try adding one of the exceptionally large (~900,000 entries) hosts files which are common to ...
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1answer
33 views

Who Can See My Ping Requests?

Diagram From my understanding: If a ping request is passed to another computer through the hub, the ping request can be seen by all 5 computers on the network If a ping request is passed to another ...
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0answers
12 views

DNS lookup fails on only some local computers: Server failed error

I am finding that some computers on my network are not resolving DNS properly, while others work perfectly. Here's an example: I have a Win10 machine. The IP address is fixed, and the two DNS servers ...
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0answers
16 views

Become a member of VMs domain network

I'm trying to join my desktop computer to a local windows network: test.local, but I'm getting this error: The following error occurred when DNS was queried for the service location (SRV) resource ...
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issue with local dns

I do not inderstand the probleme. I'm trying to add to my file /etc/hosts a new domain name 172.16.20.150 newsletter.com this ip is an ip of a remote server which I installed a WAF to filter ...
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7answers
4k views

DDNS: Is a DIY solution possible? Better?

I'm trying to establish a personal mail/calendar server at my home (yes, I've heard that it's difficult, it's a lot of trouble, and so forth, but I'd still like to try). I have an ISP that doesn't ...
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1answer
23 views

No DNS server responds for only one machine in the network

It seems my Windows 10 machine is having some DNS issues. Specifically, all DNS requests seem to be blocked and aren't getting through. I know for a fact that network connectivity is fine; I can ping ...
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1answer
31 views

NAT loopback and DynDNS

I've successfully configured DynDNS in my router and now I'm able to reach my home server from outside my local network using my custom domain. Using the very same domain I'm able to reach my home ...
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Local DNS issue since SMBv1 depreciation

I have a home LAN with 7 PC's in it all running Windows 10 (5 Home + 2 Pro) Since last Fall (Autumn) Update some of the PC's fell off the network and were not visible within the File Explorer network ...
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1answer
13 views

Order of srv records in Active Directory DNS

I'm trying to learn DNS srv records behaviour inside Windows Server DNS currently and struggling to understand a couple of things: I set up two RWDC and one RODC in a single site. It was default "add ...
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0answers
67 views

Web browser hangs up on “Performing TLS handshake” message on one website in my desktop PC. why?

I've been trying to resolve this before and did not succeed. So I have to start again. Let me explain the issue: When I'm trying to connect to the website of this small local bank from my desktop ...
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0answers
69 views

Nextcloud server

I have a nextcloud server (Nextcloud VM installed within a Kubuntu 18.04 host) that has unexpectedly stopped accepting external connections. Pinging from an external IP works just fine so I don't ...
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1answer
24 views

Dnsmasq broken after upgrade to Bionic: works, but takes ~30 seconds to resolve any query

my dnsmasq configuration got broken after upgrading to Ubuntu 18.04 from 16.04. systemd-resolved is enabled and running dnsmasq is enabled and running Any DNS query to the outside world will hang ...
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1answer
36 views

How Google public DNS gets the nameservers of my domain

I can get my domain Hosting Server IP and nameservers from Google public DNS , I know Google can get the hosting server IP from domain's nameservers, but how Google gets the nameservers of my domain,...
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34 views

Can't connect to local web server with IPV6 address

I have a Plex server hosted on a VM in VirtualBox, with Windows 10 as the host. Using Chrome or Internet Exploder on the host, I can connect to the Plex web service via http://<IP address of VM>:...
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0answers
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chrome searches for .lan addresses instead of resolving them

Is there a way to get chrome to do a dns query for the .local or .lan top level domain? According to this question's answer, it should work, but it doesn't. When I attempt to navigate to a .lan ...
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0answers
22 views

How to use dnsmasq for custom hostnames on OpenVPN?

I'm trying to set up dnsmasq, so I can create custom hostnames over an OpenVPN server. So that when a machine connects hostnames will point to resources located on the OpenVPN host or network. So for ...
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2answers
59 views

Force Windows to forget DNS server

My home network does not support IPv6. If I connect to one that does, and then go home, Windows keeps trying that DNS6 server until it times out. I've tried ipconfig /release6 but it doesn't work. ...
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Getting wrong DNS ip of my website on my network

I have set up my website www.xxxxxxx.com on new hosting, I changed the DNS setting on my domain registrar I sat "A" value to 162.215.240.128 which is the web hosting server IP of my new host, on my ...
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0answers
21 views

All browsers regularly hang connecting to websites. Internet confirmed working perfectly

Multiple times per hour my browser will just hang for 30+ seconds when connecting to any website. Tested with IE, Firefox and Chrome. My computer is running Windows 7 and i have a Cisco VPN ...
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1answer
24 views

error (network unreachable) resolving

Trying to reload my bind configuration with the sudo named -g command, I get the error: 02-Aug-2018 15:42:51.472 error (network unreachable) resolving 'sdns2.ovh.net/A/IN': 2001:500:2f::f#53 02-Aug-...
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GSuite and DNS: “Reverse DNS does not match SMTP Banner issue” reported by mxtoolbox - what to do?

In https://mxtoolbox.com -> domain health test, we have this issue: PROBLEM DETAILS SMTP Banner Check What you see when your domain has this problem LISTED SMTP Banner Check ...
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1answer
59 views

DNSMasq responds randomly

I have just installed DNSMasq on a local device (Raspberry Pi) to use as a DNS server but the service is not always working correctly when other computers in the network try to use it. This is what I ...
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0answers
28 views

Mobile (Cellular) Network Blocking by Domain Name

I have OpenConnect running in my home office so that I can access my lab from hotels and/or customer sites. To help find the server, I've enlisted the help of a dynamic DNS service which allows me to ...
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0answers
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Shell script to get ip of list of domain names: connection timed out; no servers could be reached

I have the following script from some sources in the web that should execute command host to get the IP address of a domain name in file myfile.txt. The script is: #! /bin/bash while read hostname; ...
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0answers
14 views

How to get TLS Cert in Unbound

I wanna connect to my DNS over TLS server (blahdns.com) It works great with stubby client, but I wanna try on Unbound (Ubuntu 18.04) I saw some posts said I have to config with TLS, How can I get ...
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3answers
93 views

Re-order or “prioritize” DNS server over Cisco AnyConnect VPN on Mac

I have Cisco AnyConnect on my Mac (10.13.6), and the DNS resolution works properly for our internal hostnames. The output of scutil looks fine: 2015MBP:~ craig$ scutil --dns DNS configuration ...
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1answer
47 views

Connecting Router with DHCP to Modem over LAN (no WAN)

I have a TP-Link router and a technicolor cable modem. I have set up the router as a wireless access point using this tutorial: https://www.tp-link.com/us/faq-417.html The only reason I made it into ...
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0answers
28 views

Router DNS configuration

Could any router experts provide feedback on my DNS configuration? I've tried to modify using Google's DNS servers after having connection issues. ie I could only connect to major sites like Google ...
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1answer
19 views

Correctly configuring Google Cloud DNS to access webserver via domain

I have a webserver that I've created on a Google Cloud instance. I have assigned it a static IP address already, and I am able to access the server by navigating directly to the IP. I have a domain ...
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1answer
47 views

Windows 10 IE INET_E_RESOURCE_NOT_FOUND

I have Windows 10 and IE 11, when trying to browse https://localhost/ it gives me error: There was a temporary DNS error. Try refreshing the page. Error Code: INET_E_RESOURCE_NOT_FOUND Everything ...
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3answers
70 views

Do DNS servers communicate with the IP you have done the lookup?

As mentioned in the title I would like to understand if the DNS servers send a ping or something like that to the IP which the lookup was done, I would like to know this to find a way to know when my ...
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2answers
93 views

Can ping by hostname, can RDP by IP, but cannot RDP by hostname?

I'm trying to Remote Desktop to another Windows PC. Both computers are in the same WORKGROUP. I can ping the remote computer by its hostname, which responds with its IPv4 address. I could get that ...