DNS Firewalls Could Prevent Billions in Losses to Cybercrime
DNS protection could prevent approximately one-third of the total losses due to cybercrime – which translates into billions of dollars potentially saved.
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CUJO Smart Firewall vulnerabilities exposed home networks to critical attacks
Security researchers have uncovered a swathe of serious vulnerabilities in a firewall system developed by CUJO which has been designed to prevent cyberattackers from infiltrating home networks.
Linux firewalls: What you need to know about iptables and firewalld
A firewall is a set of rules. When a data packet moves into or out of a protected network space, its contents (in particular, information about its origin, target, and the protocol it plans to use) are tested against the firewall rules to see if it should be allowed through.