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Questions tagged [internal-dns]

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

929 questions
286
votes
12 answers

List all DNS records in a domain using dig?

My company runs an internal DNS for mycompany.example There is a machine on the network that I need to find, but I’ve forgotten its name. If I could see a list, it would probably jog my memory. How can I list all of the domain records for…
Runcible
  • 3,445
36
votes
4 answers

Difference between /etc/hosts and /etc/resolv.conf

What is the difference between /etc/hosts and /etc/resolv.conf? Also, is there a good documentation that explain all these configuration files. Thank you. Bala
Boolean
  • 573
29
votes
5 answers

How do I determine what my DHCP server is?

I have a sad network left behind by some careless administrators - I am in the process of figuring out exactly what services are running where, not excluding the possibility that some services are running from two places at once, which is tons of…
Manca Weeks
  • 699
24
votes
13 answers

Using .local for internal websites

Is it okay to use app.mycoolname.local for URLs that are private / internal? We have several applications that are web based, but they are private apps and are not exposed to the public. We have been using ".net" for some of these, which doesn't…
Brian
19
votes
2 answers

Multiple reverse DNS record internal DNS

A user was having trouble connecting to the internet, some sites worked some sites did not. I do not think it has anything to do with networking gear, but just in case. 2 firewall, Palo-Alto 4 Cisco Nexus 55XXT Switch We did not make any network…
Anthony Fornito
  • 9,596
17
votes
4 answers

DNS A record pointing to private IP address

I own a domain. I will call it example.com. I want to set up a local BIND server on my private network. I have a box with the private IP address of 192.168.2.13 I would like to have this box named development.example.com, Is it considered normal…
Ryan
  • 332
17
votes
3 answers

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 across reboots. This is the content of my…
iomartin
  • 271
16
votes
5 answers

Querying DNS for CNAMEs for a server

Is there a way to query our internal DNS entries to discover all the CNAME entries that point to a particular server? Edit: We're a Windows environment, Server 2003.
PhilPursglove
  • 452
15
votes
2 answers

What is the point of the zones.rfc1918 file for Bind9?

Using an Ubuntu 10.04 LTS server in a standalone environment and trying to use views to serve two different subnets of clients. Getting errors regarding the zones.rfc1918 file, so I'd like to know what that file is used for. What's the point of…
romandas
  • 3,432
14
votes
2 answers

Should engineering have its own DNS zone, delegate, or subdomain?

We have our organization's primary domain (with AD) example.com. In the past, previous admins have created several other zones - such as dmn.com, lab.example.com, dmn-geo.com etc - as well as subdomains and delegates all of which are for different…
Thomas
  • 900
13
votes
3 answers

unbound/nsd returning SERVFAIL resolving local LAN DNS. nsd alone works fine

I've been using unbound as a local recursive DNS server. Just added nsd to set up local LAN DNS. nsd is listening on port 53530 and that works fine: $ dig @127.0.0.1 data2.datanet.home -p 53530 ; <<>> DiG 9.9.2-P2 <<>> @127.0.0.1 data2.datanet.home…
Micah Yoder
  • 340
12
votes
1 answer

SSL Server name mismatch how to bypass ie11

We have an app and the really long story short is that things have to be setup this way in order for the rest of the app not fail. We have a domain https://server01/AppNet In IIS the 443 binding is setup to use a cert with: CN=server02 When I hit…
Anthony Fornito
  • 9,596
12
votes
4 answers

Don't automatically include all subdomains in DNSMasq address

It is possible to configure DNSMasq such that it returns a fixed IP address only for a request for that exact domain, and not for its subdomains? That is, I want it to return a fixed IP when resolving example.com, but not a.example.com,…
Michael Mrozek
  • 269
12
votes
2 answers

Hosting multiple domains on a single email server with one IP

I have an email server (mail) that currently hosts one domain example1.com. The server is behind NAT and I have split-dns configured on the LAN. The time has come to host additional domains on the same email server and after many hours of googling I…
joshu
  • 821
11
votes
2 answers

Can host aliases be assigned to deployments in Kubernetes? If so, how?

This article describes how to assign host aliases to pods in kubernetes, is there anyway to do it for a deployment and not for a pod as such? Any other suggestions to add host entries in kubernetes to provide a first line of host name resolution…
Ulukai
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