Questions tagged [internal-dns]
DNS that is visible within your corporate network and VPN, but which is not visible on the public Internet.
276
questions with no upvoted or accepted answers
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Adding a new DNS server with systemd-resolved
To access other machines on my network by their name, I have to add the following two lines to my /etc/resolv.conf:
search foo.local
nameserver 192.168.X.Y
But any changes I make do not persist ...
- 161
4
votes
0
answers
924
views
Unable to Join domain, unable to resolve hostname
I'm having problems connecting a computer to the domain. I'll explain my setup (with hostnames). I have:
Hyper-V Guest 1 (Imperium) - DC / DNS Server (Server 2016 Essentials)
Hyper-V Guest 2 (Lima) ...
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4
votes
0
answers
1k
views
Samba4 internal DNS and isc-dhcp zone update
Could anybody explain, how to solve this problem with internal samba4 DNS and dynamic zone updates from isc-dhcp?
In the logs I have:
dhcpd: Unable to add reverse map from 170.5.168.192.in-addr....
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3
votes
1
answer
751
views
Kubernetes cluster via kubeadm - CoreDNS buffer size too small / Pods network problems
I am new to deploying on-premise Kubernetes clusters. I managed to deploy one using kubeadm with weave CNI.
Internet connection inside Pods is somewhat sluggish / non-working. I am trying to deploy ...
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3
votes
0
answers
430
views
Using a Dockered Unbound DNS server as a resolver for other containers
I'm using Unbound DNS server as a resolver for my home LAN. It runs as a Docker container on the default bridge network and in general it works as I'd expect it to, except when trying to use it as a ...
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3
votes
0
answers
3k
views
dnsmasq: How to set alias domain / multiple DNS suffixes for local hostname resolution?
Is it possible to set multiple search domains via dnsmasq/DHCP? Due to some migration, I need multiple clients to be able to:
ping server.old-domain
ping server.new-domain
# both should work, .old-...
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3
votes
1
answer
399
views
Internal DNS fails when backup DNS goes offline
All machines are running Windows Server 2012.
We have a Domain Controller, DC1, that is also our primary DNS server. We have a secondary DNS server, DNS2.
All servers and desktops in the ...
- 141
2
votes
1
answer
542
views
Use PowerDNS to update AD Integrated DNS Zone
Before I embark on the experiment, I figured I might ask the community at large.
So I've got an odd situation that I'm trying to remedy. I have Terraform deploying virtual machines (Linux and Windows) ...
- 344
2
votes
0
answers
2k
views
Unable to resolve private dns zone over vpn with bind9 DNS
The Problem
I have a VPC in which I need to access the servers using private FQDNs. The VPC is accessible through a wireguard VPN. The VPN server also serves as a DNS server running BIND9. I have set ...
2
votes
0
answers
162
views
SBS 2011 DNS server doesn't resolve forward lookup zones
I recently started a new job and inherited an antique in an SBS2011 server (yes, I know all the security risks and have raised this at EVERY management meeting). I have an issue with the DNS not ...
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2
votes
0
answers
921
views
Active Directory domain controller fails to load DNS zones on startup
I have a Windows 2019 Standard server that is the sole DC on a small network. Regularly users can't access the networked accounting software on the server. When I try to access the DNS admin on the ...
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2
votes
1
answer
1k
views
Avoiding DNS lookup issues with a cache
I'm running fairly simple PHP websites, on Ubuntu, with AWS EC2 instances, which use *.rds.amazonaws.com domain names to connect to their respective RDS instances.
This introduces 2 issues:
When the ...
- 653
2
votes
0
answers
2k
views
Windows domain username formats? NETBDOMAIN\USERNAME and DNSDOMAIN.COM\Username?
I'm running into issues with authentication and mapped network drives across a VPN tunnel. Namely error messages related to not being able to find a domain controller. I suspect this is somehow ...
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2
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0
answers
283
views
Why is my PowerDNS server not recursing compute.internal addresses?
PowerDNS server with recursion enabled is resolving all addresses except for *.compute.internal
The server is running in AWS and has 10.30.0.2 as it's nameserver.
The following queries (testing the ...
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2
votes
0
answers
870
views
DNS issue when communicating with Windows Server 2012 R2
I have upgraded my Windows Server 2008 R2 to a new Windows Server 2012 R2 and installed AD DS, but when to trying to join other PCs to the domain it gives the following error:
The specified domain ...
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2
votes
0
answers
825
views
PFSense wildcard records for local hosts
PFSense 2.3.2-RELEASE-p1
I have a local server running Apache. www.office.lan resolves to this server's IP.
I want to run multiple virtual hosts, each accessible by a unique subdomain, for example:
...
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2
votes
1
answer
429
views
DNS failover between internal and external addressing
We have a multi branch office scenario where each office has an internet connection and a WAN VPN connection.
User machines/applications are configured for Exchange/Citrix via the FQDN and so ...
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2
votes
0
answers
4k
views
Changing DNS server timeout on Domain Controller fixed external DNS resolution failures--why?
I ran into a perplexing blocker at our main site this week, and I'd like to understand the root cause. Process-wise, my troubleshooting broke down and a confusing configuration change fixed my issue.
...
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2
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0
answers
2k
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nginx proxy_pass with dynamic upstream servers
We're currently stuck in a situation where we are using nginx as our main frontend server for a set of services backed by a dynamic DNS based service discovery with Mesos-DNS.
Our nginx configuration ...
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2
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0
answers
584
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Outlook, Webdav Calendars, and Internal DNS
I wish I knew a better way to title this problem, so if anyone can think of a more appropriate title, please let me know. I've been banging my head on this problem for a little while, and usually I ...
- 343
2
votes
1
answer
2k
views
Unstable DNS with bind
we have a Centos machine called jupiter, on which I have installed bind9,
On every other machine the DNS is set to be the IP address of jupiter (192.168.2.101), as you can see in the output of the ...
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1
vote
0
answers
240
views
Troubleshooting issues joining computers to a new'ish domain - meaning when built six months ago joining worked
I'll begin with a cold-start with some background at the end.
While adding a computer to domain 'MyDomain.local' an error occurred:
An Active Directory Domain Controller (AD DC) for the domain
"...
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1
vote
2
answers
264
views
let local dns&name server to be reach from internet
I present the context: I have public fixed ip that it's set to my pfsense on the wan; I have internet on my lan; in my lan I have a local DNS server (ubuntu 22.04 with bind9 with ip 10.14.14.10) where ...
1
vote
0
answers
543
views
Forward subdomain to another dns-server with dnsmasq
I have dnsmasq as main dns-server in localnet(192.168.0.14).
It's serve local domain 'example'. Also I have another dns-server(bind9 - 192.168.222.67) that serve domain 'virt.example'
Here part of ...
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1
vote
0
answers
32
views
How to dynamically assign an internal DNS server to an internal client that receives dynamic IP information from an external DHCP server?
My question title sums up everything, what I am trying to archive here is – when an internal client (laptop in the network diagram picture) joins the internal L3 switch on the Lab side, it should ...
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1
vote
0
answers
1k
views
MS SQL Always-On Listener DNS entry lost in domain due to scavenging - should this be expected?
When running MS SQL with an Always-On group / listener, is it expected that the always-on listener DNS entry be kept active in the domain's DNS? When the listener was created, a DNS entry was added to ...
- 221
1
vote
0
answers
9k
views
Dynamically register hostnames on DNS server (via DHCP)
I want to set up a small network, where a central DHCP server leases IPv4 addresses to the clients. The clients already have their hostnames set and should advertise those to the central DNS server, ...
- 121
1
vote
0
answers
1k
views
How I can offer a local-only domain resolution once I run docker-compose up?
I have the following docker-compose:
version: "3.1"
services:
nginx:
image: nginx
networks:
frontend:
ipv4_address: 172.20.0.5
outgoing:
ipv4_address: 172.20.1.5
...
1
vote
0
answers
291
views
how to make unbound hold many queries for non cached address to cache it first
I am looking for a way to make unbound hold queries for the same address lookup when it is not cached. It should let only one query to be processed, after that answer cached it can reply other queries ...
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1
vote
1
answer
2k
views
Windows Server DNS Server Failure
I am having some issues with Windows Server 2022's DNS resolution and was hoping to get some insights. I have included some screenshots throughout the post
The server in question is running on HyperV, ...
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1
vote
1
answer
245
views
Weird Active Directory DNS Issue
I am having a DNS issue I cannot figure out. For one specific hostname, when I create an A record, the name ends up changing when it replicates to the other DNS servers in AD.
We currently have two ...
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1
vote
1
answer
1k
views
Container DNS resolutions works only after restarting dnsmasq
[Update] add software versions
I have a home server which runs docker and DNS/DHCP for my home network. It's all working quite nicely except for one thing: Containers can't do DNS resolution after ...
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1
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0
answers
292
views
Why Firefox doesnt work with split DNS / Host Overrides?
I have configured Host overrides in pfSense and other browsers like Chrome and Edge work fine but Firefox simply does not resolve giving "Unable to connect" error.
This is the same on my ...
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1
vote
0
answers
2k
views
How I can configure my local machine to use a docker hosted dns server alonsside with ant other dns settings for specific domains?
I have the following docker-compose.yml used as php web app local solution:
version: "3.1"
services:
nginx:
image: nginx:1.13
volumes:
- "./configuration/nginx.conf:/...
1
vote
0
answers
196
views
Router with vpn client do not forward dns requests to the connected devices
I have a problem with my router forwarding dns requests to it's clients.
My setup is as follows. I have an ISP provider configured on my router and a vpn client connected. In the vpn's network there ...
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1
vote
0
answers
281
views
NETLOGON trying to register with incorrect DNS server?
So, I have a Domain Controller DOMAINSERVER, and a second domain controller DS1. They are part of the domain office.mydomainname.com, and all was well in the world; DNS server was working great, ...
- 221
1
vote
0
answers
131
views
Embed HTML resources from internal network within a public https page
We have a website for internal use only which however is hosted publicly on a regular internet domain, and it’s secured with https protocol.
However, the page contains http(s) links to resources (...
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1
vote
1
answer
94
views
DNS Scavenging on Enterprise Environment
About DNS Scavenging in Microsoft Active Directory internal DNS server, why does by default it is not enabled? how do you usually implement this scavenging system on your enterprise? (what to look out ...
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1
vote
1
answer
382
views
Looking outside the internal DNS zone when using the same domain
So inside my network, we have a local DNS server (bind9). Let's say our internal zone is veridani.com, when I make local entries such as test.veridani.com it would work normally, and when I'm looking ...
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1
vote
1
answer
452
views
How to configure bind to not to do internal recursion?
While quering my authoritative-name-server (implemented with bind locally in VM) for "A" record of "host1.cool.com", it internally resolves the query using recursion (maybe) and ...
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1
vote
0
answers
465
views
Setting up a client to use a local DNS server
I have an Ubuntu Server (20.04) (SERVER) on which I'm running dnsmasq. This machine has a local IP of SERVERADDRESS
I have a Macbook Pro (CLIENT) on the same network - and I updated the DNS rules on ...
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1
vote
2
answers
643
views
How do VPNs block DNS queries to other interfaces?
I'm trying to understand how DNS routing works with/without a vpn. I have the following interface.
Wireless LAN adapter Wi-Fi:
DNS Servers . . . . . . . . . . . : 192.168.40.1
nslookup on this ...
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1
vote
0
answers
91
views
Setting UP disaster recovery , one region to multi region in Google Cloud
I'm new to GCP and also learning about Multi-Regional architectures .
We already have single region ( but multi zonal ) infrastructure setup.
DNS names of the internal components do not have region/...
google-cloud-platform
1
vote
0
answers
970
views
Bind9 .local stub zone
I have a Windows 2012R2 Windows AD domain "example.local" that I need to to setup a stub (preferable) or a conditional forwarder but my named fails to locate or resolve a remote ".local&...
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1
vote
1
answer
3k
views
ESXi: DNS appears not working properly
I have a working ESXi instance. Until recently, domain resolution worked this way:
esxi.example.com is resolved to ESXi host instance (hereinafter "Host") within LAN.
A VM ("Guest1&...
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1
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0
answers
3k
views
CoreDNS request does timeout (kubernetes / rancher)
I am trying to install mongodb-replicaset helmchart available on Rancher2 (well it's mostly a k8s problem imho).
The service is named mongodb-replicaset in the namespace mongodb-replicaset.
On init, ...
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1
vote
1
answer
275
views
Active Directory DNS after converting from writeable to RODC
Our domain previously had multiple sites with writeable domain controllers. These small sites were converted and now only contain a single RODC.
In our DNS I still see glue entries for the writeable ...
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1
vote
1
answer
329
views
Prioritize local DNS suffix over public domain zone
We have two zones on our DNS-server:
domain.com
domain.local
domain.com is publicly available and has sites and services on it, and resolves to 88.88.88.88
88.88.88.88 is a public IP for our NAT ...
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1
vote
0
answers
7k
views
Windows 10 fails to register host to DNS server on boot
So the situation is as follows.
We have rolled out Windows 10 laptops that auto-connect to the wireless.
The clients are Windows 10 and the DNS and DHCP server are Windows.
When they are docked, ...
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1
vote
0
answers
1k
views
Problems using local DNS server
I am trying to set up openbalena on a virtual machine, and it requires DNS records in order to be discoverable. I have set up bind9 like so:
/etc/bind/named.conf.local
//
// Do any local ...
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