Which tool can perform real-time traffic and port analysis, and can also detect port scans, fingerprinting and buffer overflow attacks?

Which tool can perform real-time traffic and port analysis, and can also detect port scans, fingerprinting and buffer overflow attacks?

• A. Nmap
• B. Snort
• C. Wireshark
• D. Metasploit

Answer: (B)

Real-time network intrusion detection hinges on watching traffic as it flows, decoding protocols, and comparing what's seen against known attack patterns so alerts can be raised or traffic can be blocked. Snort is built for this purpose as an IDS/IPS that sits in the network path and analyzes packets in real time. It uses a comprehensive set of rules to identify suspicious activity, including port scans (when an attacker probes many ports in a short time), fingerprinting attempts (probing responses to determine OS or service characteristics), and buffer overflow attempts (signatures that match overflow exploit patterns). By applying these rules to live traffic, Snort can generate alerts or, when configured in inline mode, drop or modify offending traffic, providing immediate protection and detailed event data for forensics. Nmap, while excellent for discovering hosts and services, is a scanning tool rather than a live defense mechanism. Wireshark analyzes and captures packets for inspection but doesn’t inherently detect attacks in real time unless you manually interpret patterns. Metasploit is an exploitation framework used to develop and execute exploits, not a traffic-monitoring IDS.

Real-time network intrusion detection hinges on watching traffic as it flows, decoding protocols, and comparing what's seen against known attack patterns so alerts can be raised or traffic can be blocked. Snort is built for this purpose as an IDS/IPS that sits in the network path and analyzes packets in real time. It uses a comprehensive set of rules to identify suspicious activity, including port scans (when an attacker probes many ports in a short time), fingerprinting attempts (probing responses to determine OS or service characteristics), and buffer overflow attempts (signatures that match overflow exploit patterns). By applying these rules to live traffic, Snort can generate alerts or, when configured in inline mode, drop or modify offending traffic, providing immediate protection and detailed event data for forensics.

Nmap, while excellent for discovering hosts and services, is a scanning tool rather than a live defense mechanism. Wireshark analyzes and captures packets for inspection but doesn’t inherently detect attacks in real time unless you manually interpret patterns. Metasploit is an exploitation framework used to develop and execute exploits, not a traffic-monitoring IDS.