What is the difference between an HIDS and a firewall?

What is the difference between an HIDS and a firewall?

  • An HIDS works like an IPS, whereas a firewall just monitors traffic.
  • A firewall allows and denies traffic based on rules and an HIDS monitors network traffic.
  • An HIDS monitors operating systems on host computers and processes file system activity. Firewalls allow or deny traffic between the computer and other systems.
  • A firewall performs packet filtering and therefore is limited in effectiveness, whereas an HIDS blocks intrusions.
  • An HIDS blocks intrusions, whereas a firewall filters them.
Explanation & Hint:

In order to monitor local activity an HIDS should be implemented. Network activity monitors are concerned with traffic and not operating system activity.

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