While setting up and configuring secondary BIND9 DNS servers on Ubuntu 18.04.6 for remote locations. So far, everything seems fine, except that the secondary can copy/pull partial zones files from the master.
Is there a way to copy/pull all the zones from the primary server to the secondary server?
There were a few zones missing in /etc/bind/named.conf.local on the secondary server. As soon as the zone(s) are added and the bind9 service is restarted, everything works as it should.
Related
We use CXOne CaaS phone system which then assigns an RTC server to our logged in agents based on where the DNS is being queried from.
Our primary DC sits in France, and we have a local RODC which goes back to the primary DC to get the DNS queries, but this is forcing the Caas Solution to pick up france servers for routing.
Is there no way to make it to do Australian queries, without manually adding in DNS records?
Tried:
host file manually changing each DNS is not ideal, as I.P could change from provider
As a training purpose for school I would like to install an Active Directory with an external DNS.
Serveur A : WS2k16 - Role: DNS
Serveur B : WS2k16 - Role: ADS
Is it possible to do it this way?
Thanks in advance for your help
Hosting DNS somewhere other than a domain controller (DC) is a valid configuration - one that is not uncommon in large enterprise environments. I often use ISC BIND to provide DNS for our Active Directory environment, and I've occasionally used stand-alone Windows DNS servers to host the DNS service. You lose some of the "magic" that Microsoft has added to their AD/DNS integration (e.g. AD-integrated DNS has hostnames replicated to all domain controllers for redundancy), but both DNS and AD function properly.
Provided the DC can made dynamic updates in the appropriate zones (e.g. _msdcs.domain.ccTLD), all of the host records AD needs get set up for you when you're using an external DNS server.
Even if the zones are not set up to allow the DC to make dynamic updates, the DC has a file in %systemroot%\system32\config\netlogon.dns which contains the records that need to be manually created. Clients won't be able to use the domain until the DNS records are manually created, you've got the potential for something to change on the DC and require a manual update, and IIRC there are event log entries on the DC every reboot complaining about the failure to auto-register records. The configuration is not ideal, but it does work.
Using netlogon file solved the problem, many thanks.
I can now register new computers on the ADS.
Anyway the ne computer are not inserted in the DNS entries, any clue how to solve it?
For automation purposes, a script running on a Windows server needs to be able to securely update a record in AD-integrated DNS when a certain condition is triggered.
This pertains an A record for an application, which is not the hostname of the Windows server on which the script runs.
The DNS entry has an ACL in the DNS zone to allow write by the service account running the script, and the GSS-TSIG DDNS update can easily be triggered from Linux/UNIX using a DNS client (eg. 'addns') that supports secure DDNS updates for arbitrary records in the DNS zone.
On Windows, I have had no luck so far finding any DNS client that supports GSS-TSIG (secure DDNS updates) for arbitrary records in DNS. All examples point to 'Register-DNSClient' or 'ipconfig /registerdns', which appear limited to registering the record for the local machine's hostname in the DNS zone.
We build a set of virtual appliances used throughout the company. The networking on the VM is set to NAT to prevent external DNS records from being created, unfortunately at least once a month someone switches it to bridged so other people can connect.
The problem with this is they all have the same hostname, as soon as the external DNS record is created everyone is routed to this new address causing issues until we track down the culprit and change it back to NAT or change the hostname.
Is there a method in a 2008 R2 AD environment to blacklist a hostname and prevent a DNS record from being created? DNS is configured so a record can be created by anyone with a network device which makes it messy. Adding an A record pointing to 127.0.0.1 won't work as people work with the VM from outside it with a client.
This is a multi-domain environment and the root domain has DNS restricted, if there's a way to force the VM to request a DNS record in that space that could work.
Edit: To clarify, the DNS record is created via DHCP
Create static host records for those required, then set the permissions to them to deny writes. That should prevent them from being updated.
I'm currently using Dual DHCP DNS Server for my project to do replications and failover within my network system.
I followed the instructions clearly on doing Zone replications, but I keep getting an error message on "Server is not authorized". Thus I am unable to replicate my configurations from the primary sever to the secondary server.
This is the excerpt from my config.ini in the DUAL DHCP DNS Server folder.
[ZONE_REPLICATION]
Primary=192.168.20.1
Secondary=192.168.20.2
Does anyone know what this is caused by? Firewall/Wrong configurations, etc?
Under the section [DOMAIN_NAME] You should put the domain name as:-
[DOMAIN_NAME]
landed.com=168.192.in-addr.arpa
The second part (168.192.in-addr.arpa) is reverse zone, based on your subnet. Both these parts are required for an authorized operation and authorized servers can only do replication.