Questions tagged [dns]

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

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DNS record configuration in case the IMAP server and SMTP server are the same mail server

On my mail server, I have SMTP and IMAP enabled(CentOS 7, Exim+Dovecot), I want it plays both roles of receiving server and sending server. I have a domain like this: mydomain.tld and point its A ...
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Authoritative BIND DNS server for homelab -- how to resolve other zones?

I'm currently setting up a DNS server for my homelab. I've made a zone file corresponding to the lab's domain, let's say home.lab, and the server now knows it's the authoritative server for that zone, ...
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Using Cloudflare andanother DNS provider

Is it possible to use Cloudflare CDN as my provider for all records except MX and use DNS Made Easy for MX only? DNS Made easy has mail forwarding proxy and Cloudflare has HTTP to HTTPS proxy. I want ...
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MacBook can't access internet

I have a MacBook that is connected to Wi-Fi but it can't access the internet. It can still ping servers like Google's 8.8.8.8. Does anyone have any clue as to what's happening? It just started ...
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Linux: How to setup a local DNS resolver that can send query to multiple nameservers in parallel?

How to setup a local DNS resolver that can send query to multiple nameservers in parallel? Why I need it: The reliability of 1.1.1.1 or 8.8.8.8 are not very good. (Observed hours of down or unstable ...
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how to fix ERR_NAME_NOT_RESOLVED in chrome when using a VPN [closed]

Macbook pro / macos 13.2 / Chrome 109 When using the GlobalProtect VPN client to access our companies networks, internal domains are not being resolved in google chrome. Results in ...
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How can I create a smart DNS proxy on Ubuntu?

I have rented a Linux server from Hetzner data center and I want to use it as a proxy server. (I currently have SoftEther installed on this server and connect to it with Windows.) Is there a way I can ...
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DNS not working on Windows 10

Some time ago I started having DNS problems that last good couple of months already. Randomly, during the day my web browser stops working and I start getting "DNS probe finished no internet&...
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DNS server settings differ between 'Device Info' & 'DNS'

My Sagecom (TalkTalk) router Primary & Secondary DNS settings differ depending on where one looks. Under 'Device Info' Primary is 79.79.79.79; Secondary is 79.79.79.80. Under 'DNS' Primary is 208....
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Direct Traffic to VM Based on URL

On my home network I have a physical server running Ubuntu 22.10. On this server I have a couple of virtual machines using Virtualbox. Both of these VMs are also using Ubuntu 22.10. My IP doesn't ...
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Configure routes and DNS for two DHCP-served interfaces

In my setup, I have two pfSense firewalls and my host machine with two VLAN interfaces. Firewall A: Interfaces: vlan.1@eno1 with static IP 10.0.1.1/24 and vlan.3@eno1 with static IP 10.0.3.1/24 DHCP ...
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How to enable DNS over HTTPS (DoH) in group policy on Windows 11?

I am trying to enable DNS over HTTPS on my personal Windows 11 (Build 22621.1105) machine (Lenovo ThinkPad). I am the only user account on this machine (MS Account, Admin). In the settings for the DNS ...
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DDclient does not update Google domains

I am trying to setup a DDNS for my home server. sudo -u ddclient ddclient -daemon=0 -debug -verbose -noquiet RECEIVE: <html><head><title>Current IP Check</title></head>&...
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FritzBox 7530 Wireguard: No such Host known

recently I set up WireGuard on my FritzBox 7530 after it updated to FritzOS 07.50. Everything is working perfectly fine except one thing. When I am at my girlfriends place (she has a FritzBox Fon WLAN ...
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Disabling an IP based access to my Nginx site

I do not want people to be able to access my Nginx site, unless it is through the domain name. I have a Flash instance running that controls the requests. Anyways I have used this command, server { ...
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RDP Local domain, how does the network know?

Recently, I switched to fedora 37 workstation and was investigating an RDP setup, luckily for me it was one settings toggle away. But one thing that immediately confused me about it was that it had a ...
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When a second router is connected to my internet router, Connection-specific DNS Suffix keeps changing for an incorrect one(?)

When another router is connected to my internet router by ethernet cable, after hours the Connection-specific DNS Suffix seems to change to a incorrect one (I believe it changes to the one in that ...
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Blocking port 53 on router

I'm trying to block port 53 on my ZTE H298A router. I've already set up an allow rule which includes OpenDNS' DNS... but I keep getting an error when trying to set up a discard rule to block port 53 (...
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DNS: why does the server return a CNAME record when asked for an MX

I'm starting to take a deep look at how DNS resolves names and I'm having a hard time understanding the answers I'm receiving when using the Resolve-DnsName cmdlet. First, I know that the name id....
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Forcing OpenDNS on router on ZTE H298A

I have a ZTE H298A router and am trying to force the use of OpenDNS. Otherwise any device on the network can simply change the DNS to say, Google, and override OpenDNS altogether. I read the following ...
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How do I set dns hijacking on AUSU ac68 merlin?

My country block t-mobile wifi-calling server, and I found a tutorial for openwrt on telegram, need set dns hijacking as below.. but I nearly know nothing about networking and dns config . So, how do ...
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Computer cannot resolve Firebase domain

I am currently debugging a chrome extension that I wrote, which uses Google Firebase for its authentication and its realtime database. Now, the extension is already distributed to a number of people, ...
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Suspecting slow DNS, without possibility to change it

Recently my ISP fixed primary and secondary DNS server addresses in my device. No explanation why, they just confirmed it's now what it is and can't be changed anymore. Around the same time I started ...
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One website loads very slowly on one computer. It loads fine on all other computers

When a user tries to connect to https://www.panelook.com. It loads extremely slow or not at all sometimes. When I use it on my own computer or any other computer within the same network, it works fine....
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Can I access IPv4 DNS resolver from IPv6-only network?

Everyone knows that it is not possible to run nslookup command through an ipv6 resolver with ipv4-only host. For instance the following command will result error on ipv4 host: nslookup facebook.com ...
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Getting stuck on DNS configurations for routing external domains to my internal Kubernetes cluster (Traefik)

I have DNS entries in CloudFlare set to my current home IP (I have Dynamic DNS setup). who.willkara.com > IP Internally, I have a PiHole server handling DNS and actually have that working.The ...
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Multiple simultaneous VPN connections

I am using terminal to connect to multiple VPN instances (in parallel, from a single terminal) with openvpn api in Go. I have many VPN servers. Some combinations of VPNs work together but some of ...
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How to Debug ping / telnet takes time to resolve the host

If I ping a dns record like ping google.com it'll take 4 seconds before getting the first request then it's instant, same for telnet. but if I ping 142.250.201.174 it's instant. I don't know how to ...
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Why are Secondary DNS settings ignored?

Can anyone throw light on the failure of my system to use the configured secondary DNS when the primary one is offline? My simple setup: Windows 10 PC Raspberry Pi running Pi-Hole DNS server A ...
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0 votes
1 answer
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How to use TLD name only for internal network

I found a lot of different variations of these questions, but none of similar to something I would like to do. I had a dnsmasq running with pointing to my local (internal server). My router was ...
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DNS Server communication issue, timeout

I have set up a DNS server with both master and slave in Ubuntu 20.04.5. All the configurations are made properly. But when I am doing nslookup, it's giving the following error: ;; communications ...
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Flush DNS cache on Netgear r6220 router

I have a PC that used to have windows on it. After having it sit powered off for some months, I've resurrected it with an Ubuntu 22.04.1 install. When looking at the attached devices in my router (...
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How does DNS forwarding treat urls with resources after the slash?

I'm having a problem with a web address that godaddy forwards to an alternate spelling of my url. Everything works fine as long as I don't have any resources after the domain. For example, mysite.com ...
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How to solve "sudo: unable to resolve host serverlaptop: Name or service not known"

I've read a lot of post about this issue but none of it helped. I dont understand what did i do wrong. Everything is working but i get this error/warning message: sudo: unable to resolve host ...
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Google Search Queries Periodically Timeout

We are experiencing intermittent timeouts (Chrome error: ERR_CONNECTION_TIMED_OUT) and/or significantly delayed queries when attempting to search Google.com. When using Firefox, when the issue is ...
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The ISP keeps changing my modem DNS address

The ISP of mine in (Iran) keeps changing my DNS address on a daily basis, my modem goes on/off and then DNS changed to some other address: 5.200.200.200 217.218.127.127 How can I set the Google DNS ...
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1 answer
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High latency for bind9 over wireguard

I have a DNS home server running with bind9. To keep using my server outside my local network, I configured a VPN with wireguard.With this command : time wget -O/dev/null https://debian.org, here are ...
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Server hostname fails to resolve from some networks, sometimes

I'm asking this question because I'm really out of my element when it comes to networking, so I apologize in advance if there's an obvious solution to my problem. I'm hosting a server that serves the ...
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1 answer
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Always append a per link routing domain with NetworkManager to be used by systemd-resolved

I'm using a global DNS server with the routing domain ~. to make sure that DNS queries are not being leaked: # cat /etc/systemd/resolved.conf.d/dns.conf [Resolve] DNS=1.2.3.4#example.org DNSOverTLS=...
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Trying to make name-based virtual hosts work on apache2 with self hosted DNS not working

I'm reading a book on Ubuntu Server and after wiring all the networking, DHCP, DNS, NTP and all, we got to the point where we need to create an apache2 web-server. I followed all the instructions but ...
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Is there a name for putting the IP address as a subdomain?

I've seen a couple of networks where domain names are self descriptive of the IP address they resolve to. For example, ip-1-2-3-4.example.com. would resolve to 1.2.3.4. The DNS server appears to parse ...
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Domains not being resolved using public DNS servers after usage of pihole/adguard

I am having issues on a client machine (Mac) accessing different sites, for instance reddit.com, after having used adguard/pihole in my local network on a raspberry pi. To resolve the issue I thought ...
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I can only access local webpage on browsers using the ip address instead of hostname.local

I have a Raspberry Pi 4 and I set up pi-hole on it. The local IP address of the raspberry pi is 192.168.1.52 and its hostname is "homepi". From my mac I can ping and ssh into the pi using ...
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Laptop semi-consistently DCs from internet despite ethernet connection

Laptop System information: CPU: I7-2670QM GPU: Geforce GT 630M Ram: 8gb Ethernet adapter: Broadcom Netlink Gigabyte Ethernet Modem/Router: NETGEAR Nighthawk Cable Modem WiFi Router Combo C7000|AC-...
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Configure VMware ESXi Host to broadcast its domain name like Avahi on Linux?

I have a local network and I have one computer on the network running VMware ESXi. I have added esxi.local 192.168.1.100 to /etc/hosts on my MacBook which allows me to manage the ESXi server via the ...
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1 answer
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What does a request to a DNS server look like? [closed]

I'm trying to learn how internet works. I have some knowledge about HTTP requests, and now I am wondering, what does a request to DNS server look like? For instance, if I wanted to get a list of ...
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Windows DNS - force local DNS lookup for local domain when using VPN

I have a home network that uses an internal subdomain of a domain that I own, int.example.com. The DNS servers on this network are a pair of Raspberry Pis running Pihole, which refer lookups for *.int....
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Use different source IP for different DNS lookups

I have a Linux VM which is connected to 2 different virtual networks. Say IP-1 (in vnet-1) = 192.168.0.5/24 and IP-2 (in vnet-2) = 172.16.0.6/24. I have a DNS server (say 10.0.0.10) which returns ...
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Find DHCP hostname and IP address of remote computer (behind firewall)

I’ve got a Mac at work, behind a firewall, with an IP address and hostname assigned via DHCP. If I have the hostname and/or IP address, I can use ssh or a vnc client to access the machine if I ...
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Hostname of fileserver not resolving in Linux but works in Linux

I have a Proxmox server, running some VMs and LXCs. One LXC is a turnkey fileserver. After some time the hostname of the fileserver is not resolved anymore on all other Linux machines. Windows is ...

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