Welcome to the 4th course of the Fundamentals
of Computer and Network Security specializations.
This is Secure Networked Systems with Firewall and IDS.
We will learn how to construct
a DMZ firewall system with dual firewalls - two firewalls - to protect a site,
and to learn how to assign proper IP address for each of those subnets,
to machine subnet, and configure routing table.
We will configure the firewall rule to enforce our security policies.
We will learn how to define critical security policy in
this DMZ firewall and their enforcement procedure.
And we will then apply related security design principles for this firewall system.
Using the Linux IP table utility and their function,
we implement firewall rules for filtering packets.
We can perform SNAPT or DNAT address translations.
We will learn how to set up network IDS system and insert
customized IDS rules for detecting intrusion with new signatures.
We will also learn how host-based IDS such as Tripwire operates,
and how to evaluate performance of
emerging IDS systems such as those using machine learning.
So let's get started.