A firewall can prevent malware infections.

Is it true that a firewall can prevent malware infections?

Partly. Several sources partially support the claim: firewalls filter traffic, act as checkpoints limiting malware propagation in IoT networks, and are listed among measures preventing malware intrusions. Other sources partially undercut it, noting firewalls generally allow normal web requests and that a boundary firewall alone is insufficient against malware-infected internal clients.

Verdict: CONTESTED PARTIAL · 4 sources for, 3 against · Last checked 17 Oct 2026

The private library was unavailable for some searches in this check. Missing library results are not evidence against the claim.

Malware. (n.d.). en.wikipedia.org. https://en.wikipedia.org/wiki/Malware

encyclopediaofcomputersciencetechnologyiqbalkalmati.blogspot.com 201910. (n.d.). archive.org. https://archive.org/details/encyclopediaofcomputersciencetechnologyiqbalkalmati.blogspot.com_201910

Firewall. (n.d.). developer.mozilla.org. https://developer.mozilla.org/en-US/docs/Glossary/Firewall

Mesbah, W. (2024). Malware Containment via Firewall Placement in Large Scale Wireless IoT Networks. doi.org. https://doi.org/10.36227/techrxiv.172710236.67831507/v1

Kremling, J. & Parker, A. M. S. (2017). Cyberspace, Cybersecurity, and Cybercrime. play.google.com. https://play.google.com/store/books/details?id=I39ZDwAAQBAJ&source=gbs_api

EncyclopediaOfComputerScienceTechnologyiqbalkalmati.blogspot.com. (n.d.). archive.org. https://archive.org/details/EncyclopediaOfComputerScienceTechnologyiqbalkalmati.blogspot.com

Load Distribution of an OpenFlow Controller for Role-based Network Access Control. (n.d.). cir.nii.ac.jp. https://doi.org/10.34385/proc.17.ts9-1