Optiv Cybersecurity Dictionary

What is a Firewall?

Firewalls are network security devices or systems that monitor and regulate network traffic (incoming and outgoing) based on defined security rules. Firewalls can be network or host-based. Hardware-based network firewalls filter inter-network traffic (typically between an internal and external network like the internet), while host-based firewalls control traffic in and out of the computers on which they reside.

 


Contact Us



Would you like to speak to an advisor?

How can we help you today?

Image
field-guide-cloud-list-image@2x.jpg
Cybersecurity Field Guide #13: A Practical Approach to Securing Your Cloud Transformation
Image
OptivCon
Register for an Upcoming OptivCon

Ready to speak to an Optiv expert to discuss your security needs?