I want to secure my networks form vulnerabilities and other online threats, anyone suggests me a great network security tool.
Lots of brands available, choose from among the best. I wouldn't give an opinion.
I've heard Comodo is one brand that deals with security much more effectively than any other provider. Please check with them.
The best security tools
Wireshark, Metasploit, Nessus, Aircrack (WEP and WPA cracker) Snort, and all this is available on Windows, Linux, and macOS.
The best one is
Acunetix Online includes a fully automated network
(OpenVAS) is a free network security scanning
Nitco an open source web server scanner