Questions tagged [domain-name-system]
The Domain Name System, usually referred to by the acronym DNS, is a hierarchical, distributed database where the keys are domain names. Questions involving publicly accessible domains should include the real, Fully Qualified Domain Name (FQDN)
12,414
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Change network location to another domain controller
I have two domain controllers dc1 and dc2. whenever i type \domainame in my domain joined client it points out to the network share that belongs to dc1.
how can I change the location from dc1 to dc2 ...
3
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0
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22
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Microsoft DNS listening on a high-numbered TCP port
In addition to port 53, the Microsoft DNS service also listens on a single high TCP port. This port changes every time the service starts (since it is a high port). What is this port used for?
Note: ...
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15
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Resolve different subdomains for different subnets with dnsmasq
I have a dnsmasq server with DHCP and DNS enabled. It serves multiple subnets. My goal is to dynamically register connected machines from different subnets on different subdomains. All of my subnets ...
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12
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Redundant serving of web application without loadbalancer?
I want to run a web application inside a mobile app using WebView. The web application uses IndexedDB for saving various important values. I like to make the web application very available (redundant)....
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73
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Why does my domain redirect to https://255.255.255.255?
I'm new in this area (ubuntu, server, cloud, networking), so I might be doing some obvious mistakes.
I have installed NextCloud using Snap Package and it seems to run well on http, accessible at a ...
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29
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Wireguard DNS failure to resolve
It's always DNS...
I'm trying to set up a WireGuard server in an LXC container running on Proxmox. The VPN works in that all the local IP addresses are accessible but I can't get DNS working despite ...
0
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11
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Regarding the issue of degraded query performance after upgrading bind9
I would like to ask if anyone has encountered a problem where query performance deteriorates after upgrading the bind version. Here are the performance test results for versions 9.16.49, 9.18.25, and ...
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22
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Support and usage of HTTPS and SVCB DNS records
I'm attempting to use an HTTPS DNS record to configure the equivalent of a CNAME at the apex of the domain. I'm using GoDaddy, so I created an HTTPS record in alias mode with name of @, priority 0, ...
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1
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25
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Proxmox Docker OPNSense Firewall issue
I'm currently configuring my root server and I'm hitting a roadblock. My current setup looks like the following:
Root Hetzner server with Proxmox
OPNSense VM for handling all incomming traffic ...
- 103
0
votes
1
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28
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nginx prox_pass: port 3000 gets redirected to 80. Same config with other ports works
I have the following scenario:
Service A
Service A is available under host:8080.
I have configured a reverse proxy in nginx to resolve servicea.domain to host:8080.
Here is my config-file (Location: /...
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1
answer
34
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SSL certificate for second level subdomain and wildcard subdomain
I have the following problem: I want to secure my structure with SSL, but certbot tells me the domains I am adding to the cert are redundant.
I want to add the following (sub)domains to the cert:
a....
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2
answers
79
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How do clients select the DNS record from multiple DNS responses?
I have a Virtual Private Server with an IPV4 address and a range of IPV6 addresses, with the option of adding one hundred more IPV6 addresses.
Configuration:
OS:
Debian 11
IPV4:
One public Internet ...
- 103
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0
answers
31
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DHCP clients losing current DNS configuration after DHCP server goes offline
We have TWO Domain Controllers, one with DHCP and DNS roles installed(DC1) and the other with just DNS(DC2).
For a while the scope options did NOT include a second DNS as an option but it's been about ...
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19
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How to find root cause for myapge.com didn't send any data?
I have deployed my app on REDHAT server,behind LB in public cloud. SSL termination should be done on LB.
I got
The page is not working
myapge.com didn't send any data
I tried
curl 10.111.123.6:2273
...
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1
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46
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DNS server bind9 can not be accessed from external network, but seems to work properly in LAN
I try to set up a DNS on my home server to provide some readable addresses for other computers outside of my home LAN. I think I was able to install and set up bind9 server, at least I get a proper IP ...
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22
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DNS Error During Load Testing in Kubernetes Environment
We've configured an Apigw using KrakenD and deployed a backend server with a Python app using fastapi in the same namespace within a Kubernetes environment(AWS EKS). We've successfully validated ...
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0
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34
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Job for named.service failed because the control process exited with error code . See "systemctl status named.service"
After starting the dns service I am getting below errors. I am trying to resolve but am unable to.
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1
answer
122
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Load Balance two servers with a Flask app with CertBot certificate and a Domain Name
I have two servers, let's call them ServerA and ServerB.
I bought a domain on NameCheap let's call it example.com
Each server has docker containers (Flask Web Apps) running on it on different ports.
...
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0
answers
34
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PowerDNS authoritative and recursor, replication setup
We have a primary and secondary in their own respective data centers using pdns 'native' replication - it's not doing axfr but rather a direct SQL replication.
This is a private network hosting DNS ...
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0
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59
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SSL/DNS Connection Issue: Too Many Redirections
I have a problem connecting to my VPS server using domain name. I installed SSL certificate on my Debian 10 Docker server and https works only with IP address, when I try to connect with domain name ...
0
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0
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24
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stalled migration from Google Work Space to MS 365 Business Std DNS servers
I have inherited a small group that stalled moving from Google Work Space to MS 365 Bus std. DNS names 4 Host records pointing to Google Work Space. MS says the only thing i have left to do is change ...
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0
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32
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How to get a Let’s Encrypt wildcard certificate via cert-manager in Azure without changing DNS?
How to get a Let’s Encrypt wildcard certificate for (an already working subdomain in) Azure?
I get https://cert-manager.io/docs/tutorials/getting-started-aks-letsencrypt/ running
But it uses only the ...
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46
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DMARC, SPF and DNS wildcards
My domain configuration has one domain and three subdomains, one of which is identical to the mail server's hostname:
example.com
sales.example.com
internal.example.com
mail.example.com
I initially ...
- 267
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53
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Your DKIM signature is not valid - opendkim
I'm running postfix server with few "features" like spf, dmarc and DKIM. SPF and DMARC works fine and when I sent an email to my gmail account I see they PASS, however DKIM shows "FAIL&...
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23
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How to handle CNAME requirement for zone apex DNS record in AWS Route53 and Cloudflare
It is not possible to create a CNAME for the apex zone in Route53 - it violates RFC. Route53 provides for an ALIAS record, but this record has to point to another AWS service and is not capable of ...
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1
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52
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DNS Configuration for Azure Load Balancer with Public IP
I'm configuring a load balancer in Azure to distribute traffic to backend VMs for my web application (most likely just a singular VM actually). I'm a bit confused about the DNS setup. Here's what I ...
0
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0
answers
26
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how to ingress correctly in kuberenetes with nginx-ingress
I'm new to k8s and I'm having slight trouble setting up a local cluster on virtual machines and have it be accessible from at least my host machine.
setup.
I've a local cluster consisting of three ...
- 101
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0
answers
54
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Devilbox - error, "No Host DNS record found. " even after adding folder name in /etc/hosts/
I am using Devilbox and have been learning through documentation on how to work with it, I have created a folder inside /data/www/ inside devilbox folder and before that I have excluded the mention of ...
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0
answers
55
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How can I configure in IIS to get on app A when I write in browser address "a" and to get on app B when I write in browser address "b"?
Details:
Windows Server 2019
IIS version 10.0.17763.1
Application A: DNS aaa.aaa.aaa.com port 443
Application B: DNS bbb.bbb.bbb.com port 8888
Both applications hosted on the same server (same IP) and ...
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1
answer
140
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unbound local-zone and local-data: am I doing it right?
I'm playing with unbound to forward DNS queries to an authoritative DNS server, cache them, and also add additionals local informations.
My config is pretty straightforward:
/etc/unbound/unbound.conf:
...
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1
answer
48
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DNS Oddities with Microsoft Dynamics Finance and Operations
Question
Is it valid for a subdomain to use different nameservers to the parent domain without the parent domain's DNS servers providing NS records for the subdomain?
For example:
Running Resolve-...
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1
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37
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DNS Migration from 2K12 dc to 2k22 dc
I am upgrading two domain controllers from Windows Server 2012 to Windows Server 2022.
I have created two Windows Server 2022 servers, and am migrating the roles. The old servers have AD DS and DNS ...
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1
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1
answer
81
views
how to add a dns ro resolve wireguard endpoint when using wg setconfg instead of wg-quick
Following wireguard docs for ordinary-containerization it works with something similar to this configuration file:
# /etc/wireguard/wg0.conf
#
[Interface]
PrivateKey = ...
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0
answers
10
views
Ajax not loading show server response issue
i'm using lightspeed server when i hit a page it taking to much time to load ajax request while first it was working fine when i change DNS it slow down and lihgtspeed cache not working for loggedin ...
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0
answers
82
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Domain SRV records in DNS
I am configuring an Active Directory domain in an air-gapped network on Windows Server 2016. I can ping my DC and I am in the same subnet, pulling DHCP from the router, while the DC IPv4 is static.
I ...
0
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0
answers
21
views
Virtual host on Apache2 for Mautic "This site can't be reached" on specified subdomain (but can be reached somewhere else)
I am configuring a brand new Mautic 5.0.3 instance on a Debian GNU/Linux 12 (bookworm) in AWS shared server with other 3 webs. Let's say (for security reasons) that its on aaaa.com.
I have configured ...
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0
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0
answers
62
views
dns problems in self managed aws ec2 cluster with aws-vpc-cni
I'm new to k8s and I've been trying to learn it. I faced a problem with trying to setup aws-vpc-k8s-cni on my fresh k8s cluster with coredns. Here's the problem in detail.
Cluster & Network ...
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1
answer
41
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DNS setting up an incoming A record
An external location has an external DNS that needs to connect to our server to access a website from on our server. Their client email and DNS are all not on our server.
Our server hosts their ...
- 217
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0
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49
views
Install SSL Certificate for Docker Container on EC2
We are running an NGINX Server on a Docker Container which is hosted on an EC2 instance.
Our Domain is registered with Amazon Route 53 but it seems like, there is missing an SSL Certificate on Docker ...
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1
answer
27
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DNS Not Update from Last 7days
I Update my DNS in Network solution domain providers but my nameserver not updated yet from last 7days i checked dns many time but not update
my website still not pointing hosting www.itcrew.in
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1
answer
40
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In kubernetes DNS queries fail between nodes
I have an issue with kubernetes and coreDNS that I am not able to solve.
System information
1 master + 2 workers
Red Hat Enterprise Linux release 9.3 (Plow)
k8s: v1.28.7
flannel: v0.24.2
coreDNS: v1....
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1
answer
48
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bind9 conditional forwarding not working as expected
Need your experience advice, We have a BIND9 DNS server that operates both privately and publicly for the domain xyz.com. I use the private DNS for certain secure nodes on our local network. I want ...
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68
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getting NXDOMAIN, but more-verbose host lookups are working
i could not log into a server via SSH:
ssh: Could not resolve hostname apex.swiftinit.org: Name or service not known
i get the same error with dig:
$ dig +tcp apex.swiftinit.org CNAME
; <<>&...
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1
answer
42
views
How to delegate subdomain to samba DC?
I set up a samba server and I'd like all the clients on my network to use the same DNS server.
Diagram
I have configured the servers (ubuntu/bind9:9.18-22.04_beta) as below.
I don't quite understand ...
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1
answer
60
views
No DNS record or entry in Host file, but can still access IIS site?
We have a VM in azure (with no Public IP), that has a bunch of sites inside the IIS. These sites are only accessible from inside the VM or whilst being connected to our OpenVPN. There is no DNS record ...
1
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0
answers
76
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If a name server is down for a while, does the registrar change DNS of my domain because arent working
I have an infrastructure with my own nameservers, and these servers were offline for a week. On the server, there are many websites managed through WHM/CPANEL. After recovering the infrastructure, ...
0
votes
1
answer
52
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Domain name resolves to IP address
I wanted to get clarity on this issue (instead of the usual try-stuff-till-it's-fixed approach). As a developer and curious person I really want to understand what's going on here so I can ...
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1
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49
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Can I delete parent DNS zone of AD domain
We currently have a single AD domain internal.mycompany.com
There are currently 2 independent authoritative copies of the parent DNS zone mycompany.com. One copy is managed by the domain controller, ...
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1
answer
10
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Wrong IP address returned for pfSense host name on a router with multiple LANs when using DNS Forwarder/Resolver
Question moved from StackOverflow:
Running pfSense 2.4.4 (first saw the problem in 2.0.3) using DNS Forwarder or DNS Resolver for Split-DNS with multiple LANs. LAN1 is 10.10.10.0/24 and LAN2 is 192....
- 101
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3
answers
86
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New Server 2022 DNS server replicated from soon to be old DNS - clients have to use fqdn for one zone
I recently replaced the existing domain controllers with two new ones that also function as DNS servers. After testing that the replication was working, I renamed the new DNS IP with the old DNS IP, ...
