Questions tagged [dns]
For questions pertaining to Domain Name System (DNS), a service that provides the resolution of host names to IP addresses. Use this tag when you are troubleshooting DNS issues, configuring a DNS resolver or server, or are trying to understand DNS's involvement in your situation.
1,524
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9
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ISC BIND named 9.19.24 / Disable AAAA/HTTPS lookups?
I have an instance of ISC BIND named mentioned version which acts as resolver of local domains and forwarder for external domains to the upstream ISP DNS server which is neither IPv6 nor DNS-overs-...
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0
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17
views
Limit DNS resolution for user on Linux, DNS whitelist on per-user base
I run an application using a dedicated (non-root) user, e.g. myappuser, on a Linux server.
Can I limit the DNS resolution for this user to only a certain domain (whitelist for DNS resolution on per-...
- 135
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votes
2
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55
views
How do you redirect your local machine to go to www.google.com when www.microsoft.com is entered in the browser's URL bar?
If I modify my /etc/hosts file from this:
##
# Host Database
#
# localhost is used to configure the loopback interface
# when the system is booting. Do not change this entry.
##
127.0.0.1 ...
- 195
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14
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DNS resolution failure for traefik forward auth middleware in kubernetes 1.29.x cluster
I am using traefik 2.10.1 to do a auth middleware, this is the middleware config look like:
apiVersion: traefik.io/v1alpha1
kind: Middleware
metadata:
name: jwt-token-auth
namespace: reddwarf-pro
...
- 639
-3
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45
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Problems updating GRUB from 2.06 to 2.12rc
I am trying to update GRUB from 2.06 to 2.12rc on my CLI-only Ubuntu VM. However, nothing I do seems to work! I can connect to the Internet, which I know because ping 8.8.8.8 gets a successful ...
- 69
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69
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Ubuntu 22.04 / Kubernetes & DNSMasq
I have DNSMasq and Kubernetes running on a series of Ubuntu 22.04 virtual machines.
After installing any CNI (in this case, Cilium), when CoreDNS attempts to startup, I get a crash loop with the ...
0
votes
1
answer
45
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Bypassing DHCP DNS with systemd-resolved
The issue
Changing the DNS option in resolv.conf from the VM's gateway to 8.8.8.8 will result in no DNS resolution.
resolvectl query google.com succeeds if I set DNS to my gateway.
The set-up
/etc/...
- 23
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1
answer
48
views
Unable to access DNS on Linux Mint 20.1 [duplicate]
I have a secondary computer that runs as a file server on my local network. I can access it via ssh with no difficulty as it has a fixed IP address.
Problem is through that server, I can't access any ...
- 241
1
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0
answers
44
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`nmap` showing different hostnames than expected
When I run nmap 192.168.1.*, I get a print out of all devices on my network. The hostnames are not what I expect. For example, the hostname of the Linux desktop (192.168.1.203) I am currently on is ...
- 139
1
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56
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Investigating DNS leaks with systemd-resolved
I'm trying to maintain control over my DNS and I'm seeing some suspicious behavior. In particular, I want to ensure that there are no DNS leaks outside my VPN tunnel.
I'm running Ubuntu 23.10 (Mantic ...
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34
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set default DNS in ubuntu
I am new with ubuntu
few days ago I changed my dns like this :
sudo vi /etc/resolv.conf
and after adding two new DNS I saved it
now I wanna to get it back to the default
but when I open the resolv....
0
votes
0
answers
115
views
Docker daemon DNS fails
Summary of question: When trying to docker pull from any repository other than the default, e.g. docker pull mcr.microsoft.com/dotnet/sdk:8.0 the command fails with dial tcp: lookup mcr.microsoft.com ...
- 101
-1
votes
1
answer
43
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Turris Omnia (Knot resolver): t.co does not resolve. twitter.com does
My Turris Omnia cannot resolve t.co, but has no problems with other domains such as twitter.com or x.co. Local names (hpdisk.lan) also work:
root@turris:~# ping t.co
ping: t.co: Name does not resolve
...
- 35.8k
0
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1
answer
106
views
Have dnsmasq resolve multiple domains form local hostnames
I am running dnsmasq 2.90 inside a Debian 11.0 based docker container as part of Pi-hole 5.18.2.
I would like to configure dnsmasq to serve the addresses of my local hostsnames for multiple local ...
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1
answer
36
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Why am I getting answer with AUTHORITY flag set to zero in BIND DNS Server configuration even though my server is authoritative for that domain?
https://fedoramagazine.org/how-to-setup-a-dns-server-with-bind/
I setup DNS server in bind as per this article
Master=192.168.1.206=master.example.com
Client=192.168.1.3=client.example.com
//
// /etc/...
- 523