You were required to plan the type of rollover that you wanted in advance, and then generate keys manually. Dnscmd required several inputs to generate keys and assumed no defaults. Zone signing was also a manual operation through dnscmd and was performed over a file copy of the zone offline.
You then had to manually import this signed file copy of the zone to the server. Windows Server R2 supported signing Active Directory-integrated zones, but a signed zone could not have dynamic updates enabled.
You were required to manually re-sign a zone whenever an update was made to the zone. There was no provision to replicate or distribute private keys. Keys were stored in the machine certificate store on the computer where they were generated.
They could not be easily exported to other DNS servers. In addition, multiple zone management tasks are automated:. You can also choose a default parameter set. For each signing key, the administrator can enable or disable automatic key rollover at a specified frequency.
If the zone was previously signed, you can also choose to re-use these parameter values. DNS Manager also provides the option of signing a zone using the same values that were used to sign another zone. Zone signing is now performed on active, online zones. There is no need to take a zone offline for signing, and then import a signed copy of the zone after signing is complete. If a zone is updated, it is automatically re-signed.
Updates to signed zones can be performed manually or dynamically. For Active Directory-integrated zones, signing keys are automatically replicated to all primary authoritative DNS servers. The wizard generates all keys that are necessary to sign a zone automatically. For Active Directory-integrated zones, private zone signing keys replicate automatically to all primary DNS servers through Active Directory replication. Each authoritative server signs its own copy of the zone when it receives the key.
For optimal performance, and to prevent increasing the size of the Active Directory database file, the signed copy of the zone remains in memory for Active Directory-integrated zones. In general, cryptographic operations are computationally expensive. For large zones, the DNS server can take several minutes to sign the zone depending on the key length and size of the zone. To prevent performance degradation from occurring when all DNS servers start to sign the zone at the same time, signing is staggered.
When a replica domain controller sees the DNSSEC keys and configuration, it waits for a random period between 5 minutes and 30 minutes before it begins signing the zone. However, because the zone is read-only, the DNS server cannot make any updates to the zones that it hosts.
Instead, it creates a secondary copy of the zone, and then configures the closest writeable domain controller for the domain as the primary server. The RODC then attempts to perform a zone transfer. Zone transfers must be enabled on the primary DNS server for this transfer to succeed. If zone transfers are not enabled, the RODC logs an error event and takes no further action.
In this scenario, you must manually enable zone transfers on the primary server that is selected by the RODC. If the zone is not yet signed, the only choice available is Sign the Zone. For information about signing and unsigning a zone, see DNS Zones.
Use this parameter to run commands that take a long time to complete. The cmdlet immediately returns an object that represents the job and then displays the command prompt. You can continue to work in the session while the job completes. To get the job results, use the Receive-Job cmdlet.
The default value is , seconds one week. Runs the cmdlet in a remote session or on a remote computer. The default is the current session on the local computer. Specifies a remote DNS server. Specifies whether to enable the server to probe other servers to determine whether they support EDNS. Returns an object representing the item with which you are working.
If that errors out too, try the following commands:. Non-authoritative answer: yahoo. If you see the above response with the set vc and not before it or only a partial set before using the set vc switch, then it is clearly an EDNS0 issue on the router. If it works with the vc switch, and not without it, then it is an EDNS0 block. I provided hotmail. EDNS: What is all about? You must be logged in to post a comment. I have problems accessing or resolving Yahoo, AOL, Hotmail and a number of other sites The reason why Yahoo, AOL and other domains have resolution issues is because some of these domain have a huge amount of data, therefore the response is larger than bytes, and the firewall or router does not support EDNS0.
DNS not able to resolve some domains such as. Questions, comments, corrections, and suggestions are welcomed!
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