Questions tagged [internal-dns]
DNS that is visible within your corporate network and VPN, but which is not visible on the public Internet.
918
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Two SMB servers behind one DNS name (same A records) not working for high availability
I am trying to resolve a problem with two samba file servers working behind same DNS name.
There are two servers, on which one SMB share is created. Sharing and NTFS rights settings are identical.
The ...
- 137
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1
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23
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Make libvirt guest able to receive multicast traffic from the host network
I have a network defined by libvirt,
The problem
From the guest I cannot query the devices that are connected to the LAN, nor does the guest see multi-cast traffic which the host is able to see.
The ...
- 101
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21
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Requirements for enabling DNSSEC in Split-Brain Bind9 DNS under a child zone?
I have a fairly complicated split-brain DNS setup, and I'm hoping to add DNSSEC to the ecosystem to support SSHFP (which requires DNSSEC). I am not totally sure I understand how this needs to work, ...
- 173
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25
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Monitoring local DNS server [closed]
I use AdGuard on Raspberry Pi at home for DNS, and it has been working well for several years.
In the past few weeks, Firefox occasionally displays a "page not found" error.
This seems to ...
- 131
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46
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Have web browsers automatically append DNS Suffix when DNS resolves with the suffix
If I have example.com in my DNS suffix search list and I open a browser and type www then the browser will talk to the OS which will talk to DNS; if www fails to resolve, my OS will append the items ...
- 1,366
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57
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DNS resolving - different results
I've inherited a couple of servers, they're in different networks and different sites, yet, I've assumed they all had the same configuration, I couldn't figure out what causes the following behaviour:
...
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1
answer
46
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Internal DNS Architecture for Active Directory and non-Active Directory clients with overlapping IP range
My organization is moving from one Active Directory domain that we did not own, to a new AD domain that we are the domain admins for. We have offices all over the continental US. Those offices have ...
- 187
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87
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How to enable local DNS resolution on a small business LAN?
We have a small business LAN with one Router/Switch (a NetGear D6200). The devices on this LAN are:
2 Macs (1 connected via Ethedrnet, 1 wireless)
1 Synology NAS (via Ethernet)
1 Linux VM hosted on ...
- 173
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83
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Windows Server 2022 offline DNS Forwarders fails validation
I have an offline network with two domain controllers that are DNS servers.
There is slow performance when accessing Active Directory and Group Policy.
In DNS Properties > Forwarders, the DCs ...
- 843
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38
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Unable to browse to company website on domain joined machine
I support a client with a very simple network. They have an Active Directory domain called such as corp.example.com. Their public facing website is example.com.
Any domain joined computer cannot visit ...
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2
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154
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Can't add Active Directory domain users to local groups intermittently
Active Directory domain on one Windows Server 2019 domain controller (DC). 120 Windows endpoints on the domain that use only the DC IP address as their one and only DNS server. Half are Surface ...
- 149
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98
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Best practices for DNS suffixes on Windows DNS
I got a Windows Server 2016 ADDS that hosts corporate DNS server. To sum up, my_domain.net is the name of the domain and so, the name of root DNS.
There's no subdomain from an AD perspective, only one ...
- 373
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50
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example.com. CAA 0 issue "letsencrypt.org" equivalent in windows server DNS
I want to create equivalent of: example.com. CAA 0 issue "letsencrypt.org" in my internal windows DNS server, Using powershell or any other way, how to do this?
- 99
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54
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Forwarding subdomains to public DNS servers
I have an internal Windows DNS server with a zone example.com configured. I have several A records and everything works fine.
Now I have deployed a web app on CloudFlare with app.example.com domain ...
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1
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72
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Why is my Windows laptop not querying local DNS server? [closed]
I have a local PowerDNS server. It works fine on my Windows laptop under Windows Subsystem for Linux (WSL). dig @main probitas returns the expected address. ping probitas and lynx http://probitas also ...
- 1
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133
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Bind9 name/srv resolution with .local domain
I’ll start off by saying I am new to bind9 and I have inherited an environment that uses a .local domain.
I know that using .local is bad, but I cannot change it. It is what it is.
I have a ...
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155
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Unbound local-zone use Wildcard for any Subdomain
The idea is to configure unbound so that it resolves only mydomain.tld, but not any of its subdomains. For example www.mydomain.tld should not be resolved.
Have tried the following, but without ...
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2
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390
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Resolve DNS for short name of the Active Directory domain
In trying to configure a SQL Server container for Active Directory, [the instructions]
(https://learn.microsoft.com/en-us/sql/linux/sql-server-linux-active-directory-join-domain?view=sql-server-ver16#...
- 839
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110
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Windows DNS server does not resolve an A record, the rest of records in the zone yes
Hello I have a very weird issue where a primary DNS server cannot resolve only one A record contained and registered within the zone. Any other record resolves fine. Deleted/recreated the record to no ...
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294
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Catch-all rule for subdomains in Windows Server DNS
Windows Server 2016 DNS with forward lookup zone "test.contoso.com". I created an A record for test.contoso.com for the IP of "test2.contoso.com" to redirect users to "test2&...
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218
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Create a new sub-domain in internal DNS server to be a domain alias for another sub-domain
I need to create a new subdomain "abc.example.com" on our internal DNS server running AlmaLinux 9. This subdomain will serve as an alias for "def.example.com," which is another ...
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1
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2k
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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:
...
- 113
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188
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Is there a good way to transfer a DNS Zone from a bind9 server to a new domain with the same name running on freeIPA? [zone to ldif]
I'm working within a company network that has DNS servers but did not have an actual Domain. After installing a FreeIPA server and setting up the domain (same name as the DNS zone in the bind9 DNS ...
-1
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1
answer
212
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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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1
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43
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Local Server connection to internal Mail-Server and SSL
I work in a company that has a pretty strict policy regarding the separation of internal and internet. I got a server for our branch office, I have a static IP for our internal network but no domain. ...
- 97
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1
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120
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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 ...
- 11
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2
answers
184
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Knative On-Premise setup without external IP
I am trying to setup Knative on On-Premise Kubernetes Cluster (without having an external ip).
Kubernetes: v1.28
Knative: v1.13
1 master node and 2 workers
https://knative.dev/docs/install/yaml-...
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2
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490
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How to resolve "Unable to obtain DNS hostname of Active Directory domain controller with ntdsa object name...."
It starts as a programming problem:
Domain.GetCurrentDomain().DomainControllers
triggers an exception:
Unable to obtain DNS hostname of Active Directory domain controller
with ntdsa object name &...
- 163
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1
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229
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nslookup error : Non-authoritative answer name
i have DNS Server for local user. when PC user nslookup error name server like this
error name
how to solved this error. my DNS running on Ubuntu 22.04
thanks
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33
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assign appliance.local to appliance.mydomain.com
I have an appliance that uses mdns to handle accessing of iot devices and plugins. when you click on add a plugin it goes to appliance.local to add that plugin to the system. As far as I can tell it ...
- 303
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186
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Cannot reach DNS server on vm (guest) through Sophos XG 310
I have a vm running Windows Server 2k19 hosted on ESXi that basically acts as a DC for authentication (AD).
The host is connected to a pSwitch (Dell s4128f-on) that is in turn connected to my Sophos ...
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290
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setting root hints in PowerDNS does NOT work
I would like to create a fully DNS hierarchy on my own for a project. Here is my setup:
BIND9 for the Root Nameserver "." (10.0.2.15)
BIND9 Authoritative Nameserver for the domain "...
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107
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Bypass DNS rebinding for localhost
I am encountering more and more issues with an app I created that binds to 127.0.0.1 on an obscure port. I have a domain name - due to needing an SSL cert - that resolves to 127.0.0.1.
I have this ...
- 101
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3
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285
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DNS client to lookup CNAME records automatically
We've just migrated to a new internal DNS resolver, and discovered a limitation that impacts our ability to lookup specific records.
Our internal (private) authoritative domain is example.net.. We ...
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295
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DNS error 4011, unable to write, or update
I encountered one intriguing issue with DNS service on a pair of our domain controllers. Frequently, about every half an hour (sometimes skips or shows only on one), I get the error ID 4011. These ...
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102
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How to advertise HTTPS RR locally?
Trying to host a HTTP3-only server locally on port 443 and have a local web browser access it.
Tested the HTTP3 server directly with a cli client and that is working 👍
Attempting to use a HTTPS DNS ...
- 163
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52
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How to make DNS Server return different answers based on network availability? [closed]
I Have a Bind9 docker container acting as the DNS Server of my network, I want this behavior when bind9 is asked about example.com:
If (Network is available):
ask from 8.8.8.8 about example.com
If (...
- 153
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2
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968
views
Bind9 - Forward specific record to another name server
I have a master zone (example.com) and several A records that belong to that zone (server1.example.com, server2.example.com, etc.). Those records resolve to internally hosted servers. I want to ...
- 163
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2
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253
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How can set the order of name servers in LINUX?
This question is in context with the DNS queries by postfix MTA in Ubuntu OS. The issue I am facing is that I have two name servers one internal and one external. External DNS name server is added in ...
- 47
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150
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How to identify which process made dns query for a particular host?
I can get logs for dns query made to a particular nameserver by auditd, but how can I get process which made dns query for a host.
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2 dns for a site + check this dns
I noticed something when I checked the dns of this site
What is this for?
https://intodns.com/ir-seda.ir
Please, someone explain what this is for?
See the photo:
enter image description here
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587
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Cannot access network resources after connecting to Always On VPN
Background: recently moved offices to a new network that did not have any domain controllers. The network here has a basic WiFi router that has both DNS and DHCP. We moved our DC here that has our ...
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370
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Active directory server set up DNS resolution failure or VERY SLOW, can I route external DNS requests the traditional way, before the server existed?
I'm very new to the world of active directory, windows server etc., so I apologise if some of the questions I ask are a bit stupid, but I'll try and explain exactly what I want to do below, and my ...
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261
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BIND9 on Ubuntu 20 - Cannot configure Zone to work properly
I installed it on Ubunto 20 and configured two zones
Options config file
acl internal {
localhost;
localnets;
192.168.70.0/24;
10.200.157.0/24;
};
options {
...
1
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2
answers
2k
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DNS conditional forwarders for zones on external trusted domain from untrusted domain
I work for an international company and the factory I work for has it's own local domain which has an external trust with the company's main domain so those users can authenticate on our domain as ...
- 58
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1
answer
1k
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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 ...
- 31
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35
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How to Forward an authorative zone in BIND between internal and public clients
I have a dns server authorative for my public records and my internal records , I want to forward a zone in my internal dns server so internal clients can access certain records without using the ...
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78
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Using split DNS when devices default to DNS over HTTPS/TLS?
Some routers don't support hairpinning, and even when they do, it can be inefficient, so split DNS is often proposed as a best practice for hosting services that should be accessible locally and ...
- 121
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40
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GCP private DNS does not work
I am trying to connect my private load balancer IP with a Private DNS record on port 80. But this configuration does not work unless I add my private IP and DNS record to the /etc/hosts file in the ...
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2
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453
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Private DNS Azure with multiple IPs on A record dont work thah I expected
I hope you can help. Thanks in advance.
I have an Azure Private DNS on Azure that is connected to 4 Vnet in 2 regions. I read that I can put 2 IPs in a single A Record ( Ex. A Record Name sql.midomain....
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