1.Nessus Nessus is a program to find a weakness in a computer system. According to the official website at www.nessus.org, this tool has been used by more than 75,000 organizations and companies around the world. 2.Snort Snort is an IDS, which is a tool to prevent and detect attacks on computer systems. Vendors from Snort

1.Nessus Nessus is a program to find a weakness in a computer system. According to the official website at www.nessus.org, this tool has been used by more than 75,000 organizations and companies around the world. 2.Snort Snort is an IDS, which is a tool to prevent and detect attacks on computer systems. Vendors from Snort