- [Presenter] Many cyber security solutions
are opensource and free.
Hence, this course makes perfect sense and gets to exist.
Good for us.
And I introduced the most viable
and proven option for each area of cybersecurity challenges.
The cyber security domains I cover
include Firewalls, Packet and Protocol Analysis,
Intrusion Detection and Prevention, or IDS and IPS,
vulnerability assessment, logging and monitoring.
iptables is what Linux uses to control the flow
of data packets in and out of a host or network.
Any firewall implementations in Linux
pretty much builds on iptables.
Knowing iptables is like unlocking the secret code
of controlling network packets in general.
WireShark is one of the most popular packet sniffers
and allows you to intercept (indistinct) packets
and inspect them.
Many organizations use Wireshark
to troubleshoot networking problems,
test software and develop protocols.
I recommend Snort as a great tool to start with
when considering an IDS or IPS solution.
Snort is versatile and can take on packet sniffing,
IDS and IPS tasks, depending on your needs.
Nessus is a vulnerability management system, or VMS.
It comes through systems throughout a network
and identifies weaknesses such as zero day vulnerabilities.
For those of you unfamiliar with the term Zero Day,
it means a security vulnerability
whose fix is not available yet and susceptible to attacks.
Syslog, Syslog-ng and Kiwi are a trio
that is a mainstream way of handling logging and monitoring.
Networking hardware and software generate log files,
which in turn enable engineers to monitor their health
and look for any signs of intrusion.
There are many options
other than what I'm covering in this course,
but you'll get a good feel for what's available in general
by following me, along with the lessons.
Once you get a decent understanding
of what these tools can do in cybersecurity,
migrating to other similar software applications
won't be a problem.
We're lucky that there are so many choices
at our fingertips, and I want you to take full advantage
of these opportunities by exploring them with me.