Top 20 Network Security Tools Wireshark Metasploit Nessus Aircrack Snort Cain and Abel BackTrack Netcat tcpdump John the Ripper Kismet OpenSSH/PuTTY/SSH Burp Suite Nikto Hping Ettercap Sysinternals w3af OpenVAS Scapy Source: sectools.org The Future of Network Security Is In The CloudGuide to Computer Network Security Free On SpringerNetwork Switch – Layer 2 Security ControlsRouter – Layer 3 Security ControlsHow to Stay Anonymous OnlineSecure Access Service Edge (SASE)Encrypted Network Analytics (ETA)Deep Packet Inspection (DPI)HIDS, HIDP, NIDS, NIDP