Questions tagged [internal-dns]

DNS that is visible within your corporate network and VPN, but which is not visible on the public Internet.

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Split DNS Issue - Configuring a new domain controller with an existing Apache web HTTP services using the same domain name "example.com"

We have a problem configuring a new domain controller with an existing Linux server hosting an Apache web HTTP services using the same domain name "example.com". The Ip address for the first ...
Mena's user avatar
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2 answers
715 views

Issue valid HTTPS certificates for intranet subdomains with letsencrypt

I'm trying to provide secure services on my home intranet. Up to now I've used self-signed certificates with a made-up domain example.foo, with a subdomain for my separate systems (e.g. srv1.example....
emma.makes's user avatar
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3k views

How do I perma-stop Chrome from using it's own DNS across the enterprise?

When attempting to access an intranet site, Chrome will ignore our DNS settings and navigate to a public page. Our computers are referencing only our private DNS server. Last week, I disabled built-in ...
Dan's user avatar
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Configure Windows Server w/ multiple interfaces reply to DNS with subnets from specific interfaces?

Our windows server 2019 needs to respond to requests with IP addresses that are only on the interface subnets they are being quried from. We have two DC's. Each has 3 interfaces. Each interface is its ...
Dave's user avatar
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are comments in Bind zone file visible to anyone who can access the view

I just implemented zone transfer restrictions (IP plus tsig key) on my bind server. I assume this should mean that the entire zone contents are not accessible by anyone anymore, correct? If I place ...
Brian's user avatar
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2 votes
1 answer
1k views

CNAME for Active Directory domain controller

So my question is - is there any concern to add a CNAME for one domain controller to provide to copiers and other internal sites/applications? I read that Active Directory doesn't truly "need&...
Grim's user avatar
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2 answers
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nslookup finds IP address, but still claims NXDOMAIN

In my network I have: mikrotik router (10.0.0.1) with static DNS entries for myhost.mydomain.com -> 10.0.0.4 adguard server (10.0.0.128) that uses 10.0.0.1 as upstream DNS DHCP gives 10.0.0.128 as ...
Mirek's user avatar
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bind dns zone notify with multiple view

I experienced some difficulties with zones from what should have been an internal view (with RFC1918 addresses plus public IPv6) leaked to the external view (public IPv4 plus public IPv6). I think I ...
Brian's user avatar
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1 answer
559 views

Setup split DNS to external CNAME when resolving within an internal CoreDNS?

I have an internally hosted DNS resolver via Core DNS running on my network. Everything is great aside from one thing, which is I cannot load my apex domain when connected over VPN. The reasoning is ...
Ryan's user avatar
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2 votes
1 answer
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AD Domain with matching TLD FQDN, forwarding DNS requests

I have the following scenario: A brand new ADDS domain from a single PDC+DNS. The FQDN of the domain matches our public website name (webname.com). The gateway dictates the PDC/DNS as the first DNS ...
TechnoNewbie's user avatar
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2 answers
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DNS lookup fails if provided domain name ends with a slash

We have successfully run an office network with various Linux servers (Ubuntu) and Windows+Linux clients for several years now. One server acts as and internal DNS server using the DNSmasq light-...
Thomas Popp's user avatar
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41 views

Domain name is resolving to DC that is not accessable for VPN users

Problem is when one (and only one) VPN user tries to resolve our domain name (xxx.local), it is resolving to a DC that is not accessible to VPN users, and not the ones that are accessible. We have 2 ...
Trashcan's user avatar
0 votes
2 answers
71 views

intranet dns lookup fetching incorrect ip

We have a host entry on our server in /etc/hosts file. So there is an entry as follows: 10.74.74.76 foo But on the same machine, via SSH I do the following: $ host -t a foo foo.internal.domain.com ...
deostroll's user avatar
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1 answer
485 views

DNS Zone has no address records (A or AAAA)

Whenever I run systemctl start named.service I get the error: zone example.com/IN NS 'linserver-1.myco.example.com.example.com' has no address records (A or AAAA) Now the confusing thing for me is ...
Ryan West's user avatar
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1 answer
514 views

How Do I Setup Subdomains in Private AWS VPC?

I have a domain registered at GoDaddy. Let's call it acme.com. Servers that are publicly available have their subdomains registered at GoDaddy. Example: www.acme.com and service-a.acme.com. I have a ...
YoungDinosaur's user avatar
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207 views

Internal DNS server ignored when using Edge and Android

I have a domain name publicly connected to my home address, so I can access a webserver locally. For example: webserver.domain.com But when trying to reach this from inside my home, I get on the web ...
Josjr87's user avatar
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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 ...
LegionNexus's user avatar
1 vote
1 answer
2k views

Still having DNS forwarding issue

I asked this question a while back and it got bumped to chat because a lot of subjective opinions. Original message here for reference: https://chat.stackexchange.com/rooms/139176/discussion-on-...
Sabre's user avatar
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DNS forward resolution for specific non-FQDN hostnames (short names)

I'm in a situation where I'm being asked to solve a problem where computers are being migrated from one network/DNS domain to another. As this transition occurs, there will be machines in the original ...
Brian McMahon's user avatar
1 vote
1 answer
1k views

Chrome ignoring local dns replies

Am having a local network with about 300 devices some is domain connected and some are not I have windows server 2012r2 sith dns role Domain connected users can access local iis webpage while others ...
Mohammad Akhrass's user avatar
-1 votes
1 answer
849 views

Map ip+port to internal website name

I have a LAN web application running in our organization on a Ubuntu 20.04 at this address: http://192.168.0.104:8084/ Rest of devices are Windows and our servers are Windows Server too. So our ...
E. Williams's user avatar
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0 answers
399 views

Multicast resolution overrides hosts file on Windows 10

I have a Windows application that publishes itself with a DNS multicast record. Let's say myapp.local. When it is installed, it stores a record in hosts file under systemroot/drivers/etc folder. 127.0....
Tobia's user avatar
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2 votes
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537 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) ...
DavisTasar's user avatar
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2 answers
585 views

Split DNS. Same domain names with different values in internal and external world

I am searching for possible solutions for splitted DNS for internal/external worlds. Thing is, those two "worlds" (in reality different sets of nameservers) are partialy overlaping. Here is ...
Kisuke's user avatar
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1 answer
5k views

How to disable /etc/hosts from resetting after reboot

Using Ubuntu 20.04 LTS on a Raspberry Pi and trying to setup a DNS and DCHP Server on it using DNSMasq Got to the point where I want to add static DNS results in the /etc/hosts file however when I ...
jacoboneill2000's user avatar
3 votes
1 answer
2k views

How to setup Client VPN Endpoint to use AWS DNS?

I'm trying to allow VPN users to use Private Route53 DNS entries. Eg: a private hosted zone example.corp issuing DNS records on the local network. At the moment I can't even find the right set of ...
Philip Couling's user avatar
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1 answer
238 views

Why would Windows 10 workstation give "Connecting" popup when saving file to network?

We have our main file server "Files" on a Windows 2012 R2 server which works fine for nearly every workstation. A couple however, both of which are Windows 10, are having an issue when ...
s3rvant's user avatar
0 votes
1 answer
37 views

Prevent services subdomains from browsing

I'm facing a problem, and I don't know what are the best practices for it. I got a VPS hosting multiple services (DNS, Apache and IMAP/SMTP). The domain is briffoud.fr and each service has its ...
Dantes Hanketsu's user avatar
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2 answers
5k views

Can I force a custom DNS server for OpenVPN clients, without forced traffic redirection?

I have configured an OpenVPN server to give users remote access to internal company resources. Since the main purpose of this VPN is not to change/hide the users IP address, but to provide access to ...
Lázár Zsolt's user avatar
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1 answer
474 views

clients on a pfsense with zentyal on local network/domain can't resolve/ping hostnames into ip address to use with Veyon

Hi I have network at a school setup with pfsense as firewall, router, dhcp and captive portal (for wifi), domain: schoolname.intranet zentyal: freeradius, ldap, dc, and dns problem: clients can't ...
Francisco Cortes's user avatar
2 votes
1 answer
460 views

Restrict forest-trust to a single DC pair

We have two AD forests with a trust in place. fwDomain has been firewalled from accessing resources in corpDomain. corpDomain has one DC within the firewall boundary and has the ability to communicate ...
rmarles's user avatar
  • 21
1 vote
1 answer
4k views

How to supply hostname using isc-dhcp-server to hosts without fixed-address

I have a DHCP+DNS setup on my network using bind9 and isc-dhcp-server. It works fine for all clients that have a "proper" hostname configured without any special setup in dhcpd.conf in the ...
xxDMxx's user avatar
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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 ...
Brett's user avatar
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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, ...
a.ilchinger's user avatar
0 votes
2 answers
1k views

How do you resolve to both public and private zones in a Split-Horizon DNS (using GCP Cloud DNS)?

We're using GCP and Cloud DNS to manage our domain and I'm trying to solve for these use cases: Have private records for things like Databases that can only be resolved within the company network (...
James's user avatar
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0 votes
0 answers
377 views

VMSS auto register with Custom DNS

We’re creating a VMSS and we use a custom DNS with extending AD from on-premises, but we are not sure how to register the VMs as the scale set scales out, in azure DNS we can create a private zone and ...
Norrin Rad's user avatar
1 vote
1 answer
2k views

DNS suffix works only when no subdomains are added

We have a DNS suffix for our domain ourdomain.local and it works whenever we have one additional DNS component e.g. test1.ourdomain.local or graphs.ourdomain.local, so that means we only have to type ...
sdlsep's user avatar
  • 31
0 votes
1 answer
1k views

Make static hostname visible via DNS (and dynamic IP)

In my local network I manage a csv file which maps MAC addresses to hostnames. This file is used to set the hostname of a client machine when it gets installed, so dynamic hostname assignment is not ...
a.ilchinger's user avatar
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 ...
Dimitrios Desyllas's user avatar
0 votes
1 answer
58 views

Suddenly dig +nocmd pop3.pauperis.org aaaa +noall +answer returns nothing

the command dig +nocmd pop3.pauperis.org aaaa +noall +answer returns the followingin my laptop: pop3.pauperis.org. 3111 IN CNAME pauperis.org. pauperis.org. 3111 IN AAAA 2001:41d0:...
peris's user avatar
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0 votes
1 answer
481 views

Migrating a Terminal Server - Multiple Names

I tried migrating our Terminal Server, which is now successful. The terminal server is joined to a trusted domain and normally, we could access the terminal server from our own domain. I created an A ...
Laredo's user avatar
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0 votes
1 answer
2k views

Internal DNS with BIND, how to resolve one IP address differently?

I have an internal DNS (it is completely internal, ie. the network is not connected to Internet) for a group of networks. They are set up as follows: Each network has a different address range of 10....
raj's user avatar
  • 512
1 vote
1 answer
3k views

VyOS Configuration Issue

I am working on setting up a VMWare lab. I have a physical box with which I've installed ESXi 6.7 on. While I'll be adding many more, I currently have 3 vm's; a Windows 2016 Server with no server ...
sbagnato's user avatar
  • 113
0 votes
1 answer
1k views

Client on network not resolving local records but using external instead

Problem When trying to access an internal server via hostnames using NSLookup, I receive the correct DNS server address, FQDN and destination IP address. When I try to access the server using its ...
AG23's user avatar
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0 votes
0 answers
54 views

How do I get onsite DNS to communicate with Azure VNet DNS?

We have an S2S and our DNS server in Azure can talk with the Azure VNET DNS, however our onsite DNS server cannot because of a routing issue I think. What configuration do I need to change so that ...
naps1saps's user avatar
  • 192
0 votes
0 answers
1k views

DHCP server not dynamic updating DNS across multiple domains

I am in the process of migrating from an old single label domain to to a new domain on a new server. I have just switched over to the DHCP server on the new domain however, computers still on the old ...
jsun5192's user avatar
1 vote
3 answers
159 views

Enable Host Guest Domain Resuloution

Situation: I have Ubuntu 20.04 server inside Vbox6.1 with an Ubuntu 20.04 Desktop Host. Host-Guest communications are configured correctly using vboxnet0 adapter. I can readily ping the static ip of ...
Maestro223's user avatar
3 votes
2 answers
2k views

Why will Firefox resolve my domain but Chrome will not

I've been setting up a LAN DNS server using DNSMasq to forward my webserver which at the moment has https and is port-forwarded by my router. I have a domain registered which resolves fine from ...
Adam  M.'s user avatar
  • 161
0 votes
2 answers
479 views

Can windows DNS server be configured to return a fully qualified DNS alias?

Problem We have a 3rd party web app installed on a windows server. There is an alias DNS record setup so that user can type in to a web browser the app name i.e. "testapp" and get the site. ...
Richard Holley's user avatar
0 votes
1 answer
316 views

Recursive Bind DNS server working in the cloud, but not in VM

I'm using ansible to bring up an identical server in the cloud, as well as in a VM (Virtualbox) on my workstation. The instance uses a non-public-facing recursive Bind DNS server to cache queries and ...
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