Which technique will help protect against enumeration?

Posted by: Pdfprep Category: CPEH-001 Tags: , ,

A company has publicly hosted web applications and an internal Intranet protected by a firewall.

Which technique will help protect against enumeration?
A . Reject all invalid email received via SMT
C . Allow full DNS zone transfers.
D . Remove A records for internal hosts.
E . Enable null session pipes.

Answer: C

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