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Guidelines on Firewalls and Firewall Policy



Karen A. Scarfone, Paul Hoffman


Firewalls are devices or programs that control the flow of network traffic between networks or hosts employing differing security postures. This publication provides an overview of several types of firewall technologies and discusses their security capabilities and their relative advantages and disadvantages in detail. It also makes recommendations for establishing firewall policies and for selecting, configuring, testing, deploying, and managing firewall solutions. [Supersedes SP 800-41 (January 2002):]
Special Publication (NIST SP) - 800-41 Rev 1
Report Number
800-41 Rev 1


Firewall policy, firewalls, host-based firewalls, network firewalls, network security, packet filtering, perimeter security, personal firewalls, proxies
Created September 28, 2009, Updated February 19, 2017