What is the difference between signature based and anomaly-based intrusion detection system (IDS) technologies?a.Signature-based IDS blocks traffic without an appropriate digital signature, while anomaly-based IDS only alerts on traffic that is not originalb.Signature-based IDS blocks attackers that match a malware signature list, while anomaly-based IDS establish a baseline and then look for variations from the baselinec.Signature-based IDS compares the signature in a packet to determine if the signature is authentic, while an anomaly-based IDS looks for odd occurrences on a systemd.Signature-based IDS flags nefarious traffic with a digital signature, while anomaly-based IDS reviews traffic time stamps and alerts on those that do not match the system time

The main difference between signature-based and anomaly-based intrusion detection systems (IDS) lies in their approach to identifying potential threats.

a. This statement is incorrect. Neither signature-based nor anomaly-based IDS systems block traffic based on the presence or absence of a digital signature.

b. This statement is correct. Signature-based IDS systems work by comparing network traffic against a database of known attack patterns or signatures. If a match is found, the IDS will alert the system or network administrator. On the other hand, anomaly-based IDS systems establish a baseline of normal network behavior and then monitor for any deviations from this baseline. If the system detects behavior that significantly deviates from the baseline, it will trigger an alert.

c. This statement is incorrect. While signature-based IDS systems do compare packet data against known attack signatures, they do not authenticate these signatures. Anomaly-based IDS systems, on the other hand, do not look for odd occurrences on a system, but rather deviations from normal network behavior.

d. This statement is incorrect. Signature-based IDS systems do not flag nefarious traffic with a digital signature. They simply compare network traffic against a database of known attack signatures. Anomaly-based IDS systems do not review traffic time stamps or alert based on mismatches with the system time. They alert based on deviations from normal network behavior.