Questions tagged [internal-dns]
DNS that is visible within your corporate network and VPN, but which is not visible on the public Internet.
778
questions
0
votes
0answers
21 views
Zone files not updating in master nor slave
Master /etc/named.conf:
options {
listen-on port 53 { 127.0.0.1; 192.168.2.2;};
listen-on-v6 port 53 { ::1; };
directory "/var/named";
dump-file &...
0
votes
1answer
43 views
How to access a private zone via DNS peering
Let's say I have 2 projects (A, B), each with their own VPC and VPC peering enabled between them.
Then I create a private DNS zone in project A, let's say with .internal as DNS name. Then I add an A ...
google-cloud-platform
-2
votes
2answers
72 views
bind9 separated zone file for *.sub.domain.com
I want to create sub subdomain that are only visible from my private network.
My named.conf.local looks like this:
acl internals {
127.0.0.0/8;
192.168.1.0/24;
};
view "internal" {
...
0
votes
1answer
29 views
Bind9 forward top level domain
Hi all just starting working professionally with bind9 and dns, say I have an AD/DC server (with dns) running on internal.com but my bind9 is authoritative for sub.internal.com can I do a forward zone ...
1
vote
0answers
48 views
Multiple servers behind one public IP [duplicate]
I am hosting multiple servers behind one public IP. (Mostly in Proxmox VE) Currently, all the services are on separate ports.
I would like to use multiple domains to reach different services and am ...
-1
votes
2answers
46 views
Conditional forwarder for subdomain through DNS proxy
I have a Windows AD domain : contoso.local
I want to forward all requests to some.contoso.local to another DNS server through forwarding DNS server:
contoso.Local.DNS => Proxy.DNS => some....
0
votes
0answers
30 views
Stop dnsmasq DHCP binding to wildcard IP address
I'm trying to configure dnsmasq to provide DNS and DHCP but only on specific interfaces, on Linux.
I have three interfaces lo, dummy0, wlo1:
$ ip link
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 ...
1
vote
2answers
77 views
How to use another DNS Server when the PC is not in domain?
I have two DNS servers (on DCs) in my domain that my clients use when they are connected direct in office or with VPN. I want to set up another external DNS server, and tell the PCs to use this server ...
1
vote
1answer
24 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 ...
0
votes
1answer
106 views
Identifying the TLD and SLD of a URL
I was given a question to identify different parts of a domain and I got the answer wrong. Here is the URL
enter https:\\www.example.co.uk
What is the,
Top-Level Domain?
Second Level Domain?
to which ...
0
votes
1answer
54 views
Configure DNS routing in wireguard
Can anyone help to configure routing in wireguard, please?
What i have: Linux server with installed wireguard, unbound dns, pihole, seafile. router keenetic speedster iptables is set to deny 80 port ...
1
vote
0answers
38 views
Windows DNS - internal A Record for pool.ntp.org - Subdomains don't resolve [closed]
For our phone provisioning we need to resolve "pool.ntp.org" to an internal which does work fine.
We made a primary zone named "pool.ntp.org" and a single A Record with the ...
0
votes
1answer
84 views
AWS route 53 inbound resolver endpoints vs using .2 address in a VPC
I am looking to resolve addresses in a private hosted zone network using customised forwarding rules configured in an on-prem DNS service. The forwarding rule would effectively say, "for my ...
0
votes
1answer
562 views
Pushing local DNS server through openVPN on mobile connection
I have an OpenVPN server running on my Synology NAS on local IP 192.168.9.36.
I have an application on the NAS running on local IP 192.168.9.36:1234 and I have a reverse proxy that allows me to access ...
1
vote
1answer
38 views
DNS over VPN subdomain exception
I’m hosting a Munki repository on our local server for software deployment. It is reachable on a subdomain internally. Since everyone is working from home now, I’d like to mirror the repo to a ...
1
vote
2answers
99 views
What causes a computer/phone/device to do a DNS lookup for its own hostname?
The two main things I'm wondering are:
What causes a computer/phone/device to do a DNS lookup for its own hostname/FQDN
How long after a device leaves a network will it retain the "settings"...
2
votes
0answers
21 views
DNS Error 4000 occurs regularly
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 ...
0
votes
0answers
34 views
How does DNS work across two separate networks using NAT?
Apologies for sounding naive in advance, I am a newbie in servers/networking and have a generic question around Load Balancers, DNS and NATting.
We have an app deployed on our private data center. The ...
1
vote
2answers
197 views
Weird wpad DNS queries, anyone seen this?
I noticed that one computer (Windows 10) on our company network does some strange looking queries to our (internal) DNS server (dns.company.com).
I see the wpad-query every minute, and then every ...
0
votes
0answers
23 views
Can I safely delete a parent zone in Window Server DNS?
AD has two fwd lookup zones: company.com and corp.company.com. I'm not sure of the correct terminology here but corp.company.com is the root or main or base domain; that is to say all objects in the ...
0
votes
0answers
19 views
Routing on local LAN with SSL
We have multiple QA machines on our local LAN that run different sites, each machine on a different version:
QA1 runs test1.167.company.com, test2.167.company.com
QA2 runs test1.168.company.com, test2....
0
votes
0answers
54 views
Different DNS records on offline local network with valid DNSSEC
This is pretty much DNS spoofing on local network including DNSSEC, but I believe it should be somehow possible since I'm the legitimate owner of the domain.
I'm planning to provide a service during 1-...
0
votes
1answer
57 views
Is there a DNS cache that can automatically re-resolve its cache around the TTL timeout?
This is for a server setup with a wobbly upstream DNS for company internal server names. Sometimes, when an entry has fallen from the cache due to TTL, and our system tries to resolve it, the upstream ...
1
vote
1answer
42 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 ...
0
votes
1answer
50 views
Dual DNS Issue - Internal & External
I'm in a fix here in offering a softphone solution for a company to allow users work from home.
CURRENT SCENARIO:
The company has an existing internal Windows DNS "ABCcompany.com" and ...
1
vote
1answer
34 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 ...
0
votes
0answers
22 views
How to change the domain name in access URL of a web application hosted on MS Azure?
I have a question about changing the domain name in access URL of a web application hosted on MS Azure. We have managed to recently create a clone of an existing Virtual Machine (VM) for a different ...
1
vote
0answers
67 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 ...
0
votes
0answers
43 views
How do I flush the DNS cache for programs running on Ubuntu server 20
I have moved my LDAP server (ldap.intranet.local) from a VM on one machine (192.168.0.5) to a docker container on a new server (192.168.0.7). I have updated the DNS records. When I turn off the LDAP ...
0
votes
1answer
30 views
Implementing Reverse DNS in a Live Environment
I've been tasked with implementing reverse DNS internally in our Windows environment. What are some risks I should watch out for, and what is the best way to setup a test environment for changes like ...
0
votes
0answers
29 views
Vagrant / Docker: Could not resolve host occasionally
In my dev machine, I am running 2 Docker sites (frontend and API backend) on top of Vagrant (CentOS).
In the main host (Windows), I have the ff. entry in the hosts file
192.168.2.200 docker.test
The ...
2
votes
1answer
133 views
how to setup dnsmasq for DNS for private and public hostnames via different DNS servers [duplicate]
lets say i have this private hostname dev.private.example.com that is only accessible in a private network over VPN connection and i have prod.example.com that is accessible to the internet. I have ...
0
votes
1answer
76 views
Correct Bind DNS configuration for both internal and external network with Ubuntu Server 20.04
I'm working for an office in primary education and I'm setting up a local server with Ubuntu Server 20.04 for both internal and external use. All schools and offices belong to the national network '....
0
votes
0answers
186 views
upstream timed out (110: Connection timed out) while proxying connection - Nginx/Raspberry Pi/Ubuntu 20.04
I cannot find any help with UDP, so I have come here to ask.
I have a DNS cluster set up on Raspberry Pis running Ubuntu 20.04 and Nginx. The proxy is used for UDP on port 53. I am needing to put this ...
0
votes
0answers
25 views
Docker Local Communication Between Services
I have 2 services inside my docker cluster. frontend runs on port 8090, and backend runs on port 8000. How can I make frontend call backend via local DNS like fetch('https://backend.local/')? Because ...
1
vote
1answer
66 views
Proper behavior for a DNS Server when it is queried for a domain it doesn't control in the case of Split-Horizon DNS?
So one of our cloud providers offers a lower-latency, zero-rated "Internal Networking" option between VMs. The interfaces on the internal network are in the 10.x.x.x IP Space. When one of ...
2
votes
1answer
73 views
SAMBA shares don't work with short server name
I have a legacy SAMBA server to share files.
But I can't mount windows disk with short name:
net view \\dades.company.es -> That work
net view \\dades -> That don't work
net ...
0
votes
1answer
652 views
In Nginx what is the resolver directive mechanically doing to avoid errors and warnings?
Environment: Nginx, Node.js
I've read the Nginx Docs on Resolver, I understand it's used for DNS and I include it in my config.
However I don't entirely understand what it's doing or when and why I ...
1
vote
2answers
106 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 ...
0
votes
0answers
56 views
Possible to send real IP through Nginx UDP balancer to DNSMasq backend?
UPDATE: I uninstalled Nginx and reinstalled/compiled from source so I could get the ngx_stream_realip_module, but still cannot figure out how to forward the client IP instead of the proxy IP.
I have ...
0
votes
1answer
85 views
Local mail exchange with DNS servers
I have a problem with correctly setting up a working infrastructure for testing mail spoof preventing mechanisms.
As stated in a graph below, I have 2 mail servers (centos1 & 2) and 2 DNS servers. ...
1
vote
2answers
48 views
Local BIND DNS Caching server clients not resolving public DNS, only internal zone
There are a bunch of commented sections to give an idea of what I've tried. Note, this is getting copied in as a jinja2 template via an ansible playbook (that's why there is an ansible variable in ...
1
vote
1answer
337 views
Use of private and public DNS with DNSSEC
My company, 'example.com', has a public host www.example.com. The (legacy Windows managed) internal network has several internal hosts internalhost1.example.com, internalhost2.example.com and so on.
...
0
votes
0answers
14 views
Rancher problems with dns losing their internal references
I have an ecosystem with microservices in the rancher and I have a very annoying problem. The services have many relationships with each other or sometimes with internal services aimed at developers (...
1
vote
2answers
82 views
Is it safe to use DHCP Discovery to get DNS servers in my program?
I'm trying several ways to retrieve available DNS servers, for example, using a custom configuration file, using /etc/resolv.conf, using command line systemd-resolve --status.
Also I implemented a ...
1
vote
1answer
79 views
Removing DNSSEC - Can it be done, and how can I?
A little while ago, I deployed DNSSEC because in doing so I reduced the number of security configuration checks I needed to implement on my local domain's DNS. These are Windows Server 2012R2 ...
1
vote
0answers
38 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/...
0
votes
0answers
26 views
2 VPN connections, But DNS of the second one is not reachable
I have to use 2 VPNs to be able to connect the Network of my Work. If i use the OpenVPN (my work vpn) i can resolve the DNS normaly. If i connect another vpn before i connect the OpenVPN, i can reach ...
2
votes
1answer
245 views
How to set custom port for DNS in systemd-resolved
I want to add local DNS server with port 8600 to systemd-resolved for request forwarding.
I've tried to change /etc/systemd/resolved.conf like this
[Resolve]
DNS=127.0.0.1#8600
but this is not counts ...
1
vote
0answers
172 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&...
