Eccouncil Exam 512-50 Topic 8 Question 56 Discussion

Simon had all his systems administrators implement hardware and software firewalls to ensure network

security. They implemented IDS/IPS systems throughout the network to check for and stop any unauthorized

traffic that may attempt to enter. Although Simon and his administrators believed they were secure, a hacker

group was able to get into the network and modify files hosted on the company's website. After searching

through the firewall and server logs, no one could find how the attackers were able to get in. He decides that

the entire network needs to be monitored for critical and essential file changes. This monitoring tool alerts

administrators when a critical file is altered. What tool could Simon and his administrators implement to

accomplish this?