Emsisoft Online Armor Firewall - Emsisoft Online Armor Firewall is a freemium online firewall protection system by the Emsisoft that is based on the own independent protection technology of the Emsisoft.
Barracuda Email Security Gateway - Barracuda's Email Security Gateway is a powerful antivirus filter specifically designed to identify and eliminate email-borne threats, stopping hazards before they reach the network.
Windows Firewall Control - Windows Firewall Control is not the built in firewall system in the Windows operating systems.
Proofpoint Email Security and Protection - Learn about Proofpoint's email security solutions that protect organizations against threats such as email fraud, phishing, spam, bulk email, and viruses.
TinyWall - Lightweight and non-intrusive firewall
Cisco Email Security - Cisco Email Security protects against ransomware, business email compromise, spoofing, and phishing.