Types of Access Lists

Question 1

White Listing

Answer 1

is a security list that provides access to only pre-approved programs, IPs, or email addresses. Whatever is on the “list” gets access to system resources, whereas the rest are denied access.

Question 2

Black Listing

Answer 2

Blacklisting, or deny listing, is a security measure that keeps certain people, websites, or programs from a computer or network. In other words, it refers to the practice of blocking unauthorized access to a system resource.

Question 3

Grey Listing

Answer 3

is a method of defending e-mail users against spam. A mail transfer agent (MTA) using greylisting will “temporarily reject” any email from a sender it does not recognize.