Firewall types and their implementation
A firewall is a device that's used to monitor and control network traffic. It is generally placed in-between an enterprise's internal network and the internet to protect the system and infrastructure of the organization.
Security management should understand the following types of firewalls, as well as how they should be structured to protect information assets. CISM aspirants need to understand the following types and implementations of firewalls:
Next, let's look at the different types of firewalls.
Types of firewalls
The following are the basic characteristics of the different types of firewalls.
Packet filtering router
A packet-filtering router is the most simple and initial version of a firewall. It tracks the IP address and port number of both the destination and source and takes action (either to allow or deny the connection) as per the defined...