Primary definition
A utility on a computer that monitors network activity and blocks communications that are unauthorized. (SP 800-69) (NISTIR)
Also known aspersonal firewall software · host-based firewall · desktop firewall · client firewall · endpoint firewall · PF
1 sources cited4 related termsReviewed Aug 10, 2026
— The Cyber GlossaryView source
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TCG
A utility on a computer that monitors network activity and blocks communications that are unauthorized. (SP 800-69) (NISTIR)
The Cyber Glossary · 2024
Cite this term
Permanent URL · stable across revisions
Election Security Glossary. (2026). Personal Firewall. In Election Security Glossary. Retrieved August 21, 2026, from https://electionsecurityglossary.com/glossary/personal-firewall
Sources
1 cited · last checked Aug 10, 2026
01
The Cyber Glossary
The Cyber Glossary
Single-source
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