pfSense - pfSense is a free and open source firewall and router that also features unified threat management, load balancing, multi WAN, and more
Cisco Umbrella - Cisco Umbrella is a cloud security platform that provides the first line of defense against threats on the internet.
F5 Advanced Firewall Manager - Stop even the most massive and complex DDoS attacks with BIG-IP Advanced Firewall Manager: advanced data center protection against layer 3–4 threats.
WebTitan - WebTitan is an advanced DNS based web content filter and web security layer that blocks malware, ransomware and phishing attempts as well as providing web content control. Cloud and gateway versions available.
FireMon - FireMon Security Intelligence Platform delivers continuous visibility into and control over firewall infrastructure.
DNSFilter - DNSFilter offers DNS-Based Content Filtering & Threat Protection.