What is the difference between stub zones and conditional forwarders?
With stub zones, a referral is given to the resolver (client). With conditional forwarding, if the IPs change for the NS servers in the domain that you are forwarding to, you wouldnt know unless you were monitoring that or got a call from their DNS admin.
What is a stub zone?
A stub zone is a copy of a Domain Name System (DNS) zone that contains only resource records that identify the DNS servers for that zone. You can add either a forward lookup zone or a reverse lookup zone.
What is conditional forwarding zone?
Conditional forwarders are DNS servers that only forward queries for specific domain names. Instead of forwarding all queries it cannot resolve locally to a forwarder, a conditional forwarder is configured to forward name queries to specific forwarders based on the domain name contained in the query.
Why stub zone is used?
A stub zone is used to resolve names between separate DNS namespaces. This type of resolution may be necessary when a corporate merger requires that the DNS servers for two separate DNS namespaces resolve names for clients in both namespaces.
How do you set conditional forwarding?
How-To
- 1) Open DNS Manager. Open the Run box using Win+R, type dnsmgmt.msc, and click OK.
- 2) Open the New Conditional Forwarder Window. Right click Conditional Forwarders under the server of your choosing, then select New Conditional Forwarder…
- 3) Configure the new conditional forwarder.
How many DNS forwarders should I have?
Have at least Two Internal DNS servers. In small to large environments, you should have at least two DNS servers for redundancy. DNS and Active Directory are critical services, if they fail you will have major problems. Having two servers will ensure DNS will still function if the other one fails.
What is stub zone forwarding and how does it work?
This means that if a DNS server changes, your stub zone forwarding will become aware of this. If a new DNS server is introduced, your DNS server will automatically start using that new server. The stub zone will always keep just the information needed to contact the authoritative DNS servers.
What is the difference between stubs and conditional forwarding?
For a better understanding, let’s look at the difference between stub zones and conditional forwarding. In conditional forwarding you hardcode your DNS server with the IP addresses used to contact the authoritative DNS servers. If one of the DNS servers change, your conditional forwarding will start to fail.
How do stub-zones get their information?
Stub-Zones are dynamic – if you add new Nameservers for a Zone the Stub-Zones will get this information and also use the new servers. Also the Stub-Zones do receive their informations by just querying DNS-Servers instead of requesting a Zone-Transfer.
Is conditional forwarders a good option?
This option has worked very well in many environments. With Conditional Forwarders, no information is being transerred and shared.