-4

This question already has an answer here:

How firewalls differ from IDS ( Intrusion Detection System ) ? What are the differences between them ?

marked as duplicate by Steffen Ullrich, S.L. Barth, techraf, Matthew, Stephane Nov 14 '16 at 11:13

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

  • Though its a duplicate question as already asked.. I unable to delete this post. – Lakshmi Balan Nov 17 '16 at 5:31
1

Taken from Wikipedia on firewall:

In computing, a firewall is a network security system that monitors and controls the incoming and outgoing network traffic based on predetermined security rules

Taken from Wikipedia on IDS:

An intrusion detection system (IDS) is a device or software application that monitors a network or systems for malicious activity or policy violations.

About the difference between both of them:

The main difference is that firewall preforms actual actions such as blocking and filtering while and IDS just detects and alert a system administrator. Here is a small article talking about the differences for further reading.

Not the answer you're looking for? Browse other questions tagged or ask your own question.