Firewalls
Errin W. Fulp Dr. , Wake Forest University
Note: This chapter is available in its entirety online at store.elsevier.com/product.jsp?isbn=9780123943972 (click the Resources tab at the bottom of the page). It is also available in print in Managing Information Security.
1 Abstract
The purpose of the firewall and its location is to have network connections traverse the firewall, which can then stop any unauthorized packets. A simple firewall will filter packets based on IP addresses and ports. A useful analogy is filtering your postal mail based only on the information on the envelope. You typically accept any letter addressed to you and return any letter addressed to someone else. This act of filtering is essentially the same ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access