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Assessment Title
Rule Text
The Windows DNS name servers for a zone must be geographically dispersed.
Description
Discussion Text
In addition to network-based separation, authoritative name servers should be dispersed geographically. In other words, in addition to being located on different network segments, the authoritative name servers should not all be located in the same building. One approach is to locate some authoritative name servers in their own premises and others in their internet service provider's data centers or in partnering organizations.
A network administrator may choose to use a "hidden" primary authoritative server and have only secondary servers visible on the network. A hidden primary authoritative server is an authoritative DNS server whose IP address does not appear in the name server set for a zone. If the primary authoritative name server is hidden, a secondary authoritative name server may reside in the same building as the hidden primary.
A network administrator may choose to use a "hidden" primary authoritative server and have only secondary servers visible on the network. A hidden primary authoritative server is an authoritative DNS server whose IP address does not appear in the name server set for a zone. If the primary authoritative name server is hidden, a secondary authoritative name server may reside in the same building as the hidden primary.
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