Qualys - Qualys helps your business automate the full spectrum of auditing, compliance and protection of your IT systems and web applications.
Wireshark - Wireshark is a network protocol analyzer for Unix and Windows. It lets you capture and interactively browse the traffic running on a computer network.
Burp Suite - Burp Suite is an integrated platform for performing security testing of web applications.
netcat - Netcat is a featured networking utility which reads and writes data across network connections...
OpenVAS - The Open Vulnerability Assessment System (OpenVAS) is a framework of several services and tools...
Ettercap - Ettercap is a suite for man in the middle attacks on LAN.