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.
Digicert - Encryption & Authentication
pfSense - pfSense is a free and open source firewall and router that also features unified threat management, load balancing, multi WAN, and more
Let's Encrypt - Let’s Encrypt is a free, automated, and open certificate authority brought to you by the Internet Security Research Group (ISRG).
FireMon - FireMon Security Intelligence Platform delivers continuous visibility into and control over firewall infrastructure.
SSL For Free - Free SSL Certificate issued in less than a minute.