Palo Alto firewalls can be very simple to use and implement, or they can be very difficult. Because there are so many possible components and areas of configuration in these firewalls, understanding the basic features can be helpful. Management vs Data Plane Most network equipment is split into 2 (or more) basic components: a management […]
In this scenario we will be setting up a simple Microsoft Exchange mail server to be accessed by the internet. We will assume all Exchange services are on the same host, and all clients are on the internet. To begin, we start by looking at the available documentation. A brief internet search turns up https://docs.microsoft.com/en-us/exchange/plan-and-deploy/deployment-ref/network-ports?view=exchserver-2019 […]
To view the IP address on a Linux machine, we can use either of the following commands from a terminal. NOTE: The first command is deprecated and should not be used if possible. ifconfigip a Option 1: Edit configuration files The first option is to edit the files under /etc/sysconfig/network-scripts. These files exist for each […]
In this example, we will be installing the Apache web server on CentOS version 7. Once installed and configured, we will then setup a sample website on the server to show how to install fully functional website, and confirm everything is working properly Installing Apache Step 1: Update the software catalog On a Linux machine, […]
In these standard access list activities we walk through how firewalls evaluate traffic and the 5 tuples used to permit or deny traffic. We then walk through an example activity using packet tracer. Second activity using Standard Access Lists. This walks through evaluating our firewall requirements, viewing the flow of data, and identifying the rules […]
In this video we walk through the initial power on and configuration of a Palo Alto firewall. We configure the management interface from the command line and then connect to the web interface. Inside the web interface, we review how to change the IP, gateway, and DNS settings. Palo Alto Command Line Interface (CLI) Default […]
An introduction to firewalls, what they are for, and how they work. We include an overview of the 5-Tuples used in firewalls and how they are evaluated by a network device. Finally, we walk through setting up a simplified firewall rule using Standard Access Lists.
In this video I take a custom printed shower curtain from Amazon and build it into a large custom printed painting. Total cost: $40This project is based on a Reddit post by user u/power-cube at https://www.reddit.com/r/DIY/comments/bld588/2500_for_a_6_wall_print_screw_that_i_did_it_for Shower Curtain – https://amzn.to/31kUUlWStaple Gun – https://amzn.to/2MIbWX6
A brief walk-through showing how to properly open and launch the Packet Tracer skills assessments and the necessary software needed
In this video, we will create several simple Linux scripts. While simple, these scripts highlight how to automate many of the tasks you may have for your environment. HelloWorld.sh The first script, HelloWorld.sh is created by using your favorite Linux text editor (I suggest nano or vi). The first line is the “shebang” or “hashbang” […]