RFC 2196:Site Security Handbook
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Co-located


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... host computers. That is, internal and external servers should not be co-located on the same host computer. In fact, many sites go so far as to have one set of subnets ...
... Web server is available to the Internet community, it is especially important that confidential information not be co-located on the same host as that server. In fact, it is recommended that the server have a dedicated host ...
... mentioned in the opening paragraphs of section 3.2.3, services offered internally to your site should not be co-located with services offered externally. Each should have its own host ...
... off-site; should offer minimum access, except for the authentication function, to users on-site; and should not be co-located with any other servers. Further, all access to the node, including access to ...



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