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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.

856 questions
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Ubuntu DNS Lookup Failure

Some one installed and configured ubuntu on a virtual machine hosted on a machine in our network. I've recently noticed that all DNS lookup's fail but i cant find a solution to this. I've tried a multitude of nameservers, edited the interfaces file…
Lee
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HAProxy doesn't automatically reload DNS

I've installed HAProxy 1.7.5-2 on a Debian Stretch (9) for a blue/green deployment infrastructure. HAProxy is setup in TCP mode and reloads DNS every 5 seconds but it doesn't. global log 127.0.0.1 local0 warning stats socket…
Kaymaz
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Large AXFR through dnsmasq causes dig to hang with partial results

I'm attempting to set up dnsmasq as a local cache for consul. While this seems to work fine for normal digs, dnsmasq seems to only allow partial zone transfers. My resolv.conf: search x.domain.com y.domain.com z.domain.com domain.com nameserver…
Connor Bell
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Decisions about DNS on IPv6

We are rolling out IPv6, and I'm thinking about our DNS strategy. This is not a technical question--it's more of a "best practice" question. We have Active Directory internally, and the domain controllers handle both the authoritative DNS for our…
theglossy1
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Can a local DNS cache be configured to use stale records when upstream fails?

I'm looking for a proxying/caching DNS Linux server, that is able to serve stale (expired) records if it cannot obtain updates from upstream. Bonus points, if it can be configured to use stale record when upstream takes too long, and then update the…
Earwin
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How to fully disable Dynamic DNS on Windows Server?

so we're a University campus, and in DNS Manager, all the students phones, tables, etc, are registering their A records in DNS. We don't want them to. Ideally, we'd just have domain joined devices registering/updating their DNS records. We've done…
amoreno
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dnsmasq: failed to create listening socket for port 53: Address already in use

I got this error when i done the setup dnsmasq. ashokkrishna@krishna:~$ sudo dnsmasq dnsmasq: failed to create listening socket for port 53: Address already in use ashokkrishna@krishna:~$ netstat -lpn | grep :53 (Not all processes could be…
ashok
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How to use CNAME to external hosts on local DNS Server?

I have a domain mydomain.com and I'm using an external DNS Server to resolve some names like www.mydomain.com and webmail.mydomain.com on Internet. Now, I need to create a rule, only on my LAN, to resolve newserver.mydomain.com to…
Ederson
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Run local dns-server that forwards dns querys to different dns nameservers

I would like to run my own local dns-server, that forwards only some dns-queries to special dns-servers and all others to the public google dns servers. The database of the local DNS-Server should not cache the queries. E.g.: all subdomains with…
user1861174
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Resolve hostname without FQDN

I'm trying to configure Bind for internal LAN usage only (Linux server, Windows clients) and I would like to resolve workstation both by fqdn and shortname. For example, without DNS server, supposing to have a host named host001 I'm able to do: …
Eddie C.
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Microsoft DNS: Provide different answers per-src-subnet to same query - do I need full split horizon/brain?

I have a network with two vlans, both of which refer to my AD server(s) for DNS. Some servers on this network are multi-homed. Lets say we have the two subnets A: 192.168.7.0/24 and B: 192.168.5.0/24. Then we have a server whose hostname is…
Tom Newton
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NAT Reflection, or Split DNS?

I'm working on a network restructure that has three geographical locations, but will share some services. Two of the locations have workstations, and one has only servers (in a CoLo facility). We will be running PfSense firewalls, and several hosts…
Bryan Agee
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IPv6 over Cisco IPSec VPN?

We use a Cisco ASA 5505 as the firewall and IPSec VPN endpoint on our network. We use split-tunneling to reduce the load on our internet link. In other words, when someone is connected to the VPN their DNS queries go through our internal DNS server,…
Martijn Heemels
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How to intercept and manipulate DNS queries?

I'm not sure if I worded the question correctly to be honest but basically what I want to do is: When a user types in something like Expenses in the URL bar of a browser, I want the browser to be directed to a specific web address (very very similar…
emtunc
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Is there a reason to use internal DNS over 8.8.8.8?

I've inherited a LAN where there is really no name resolution being done for local resources... i.e. all users enter IP addresses manually to access printers and network shares. There are no LDAP servers or domains either....workstations simply…
CaseyIT
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