课程: Ubuntu Linux: Network Administration

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Configure caching and forwarding name servers

Configure caching and forwarding name servers

课程: Ubuntu Linux: Network Administration

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Configure caching and forwarding name servers

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- [Instructor] There are three primary types of name servers, and we've already configured one; an authoritative name server. It knows about our domain, but it doesn't configure to respond to queries for sites outside of our domain. If clients were to ask it for, say, Google.com, it wouldn't be able to return an IP address for that client to browse to... And in some configurations, that's exactly what we want. We can direct clients to use more than one name server and sometimes we want there to be separate authoritative name servers for internal use. But, if you're wanting to use the name server for general purpose resolving, as well, or if you've just set up a brand new name server with no configuration, you can configure it to act as a caching or forwarding name server so it can contact other servers that hold information about other sites. Both configurations actually cache information, but they handle looking up information differently. What we refer to as a caching name server…

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