Category Archives: Linux

Adding XRDP to your Ubuntu Desktop

As you can probably see by the dates of my articles, I have been burning the candle at both ends…

By Manny Fernandez

February 15, 2026

Installing OpenSource SAML in Your Lab Environment

In my lab, I did not want to spend money on getting EntraID or Google Woskspace SAML, so I set…

By Manny Fernandez

February 9, 2026

Understanding Netplan on Linux

I remember back in the old days when I ran Red Hat on my Servers and Fedora on my desktop. …

By Manny Fernandez

February 7, 2026

Using Multiple SSH Keys in SecureCRT and macOS CLI

When you have multiple customers or multiple servers in your environment and you want to use multiple SSH keys to…

By Manny Fernandez

December 30, 2025

Ubuntu UFW (Uncomplicated Firewall); The complete How To

Years ago, in another life, I started an MSSP before there were MSSPs.  I had started a business when the…

By Manny Fernandez

December 27, 2025

Deploying Linux Instances in AWS

Today, I started using my corporate sanctioned AWS account and deployed a Linux jump box.  I created a key-pair and…

By Manny Fernandez

July 25, 2024

Using PhoneInfoga to research phone numbers

Had a friend come to me and let me know that someone was calling his house about some roofing deals. …

By Manny Fernandez

August 14, 2021

FortiClient CLI for Linux using Realms

Last year I wrote an article about installing FortiClient on a Linux machine.  There were two options; CLI and GUI.  Today…

By Manny Fernandez

May 18, 2020

Built-In “IPerf” on the FortiGate Firewall

I happen to love iperf.  Iperf is a tool that has been around for a long time.  The idea is…

By Manny Fernandez

May 14, 2020

Doing “IP Chicken” from the CLI

OK, so it is not REALLY IPChicken, but I need to equate it to something.  I use www.ipchiken.com but there are…

By Manny Fernandez

May 11, 2020

Setting Static IP Address on an Ubuntu Server

In preparation for another article I am writing, I deployed an Ubuntu Server 18.04.  By default, it boots with DHCP. …

By Manny Fernandez

April 1, 2020

Using OpenSSL to encrypt files

I am a big user of PGP and use it regularly to send encrypted email to colleagues and friends that…

By Manny Fernandez

March 7, 2020

Bash Script to dig a list of IP Addresses

Update: I modified the script.  It now gives you an NA or the PTR when available.   I had a customer…

By Manny Fernandez

March 2, 2020

Installing SecureCRT on Ubuntu 19.10

Recently I purchased a 1TB SSD drive for my Linux box and also updated the memory to 16GB.  The PC…

By Manny Fernandez

February 6, 2020

Live Ubuntu USB with Persistence

My son started a coding club in his middle school.  He teaches coding.  Specifically Python.  The issue is that his…

By Manny Fernandez

January 30, 2020

Fortinet FIT / Tinycore Linux Static IP addressing

Last night, I decided to deploy the Fortinet FIT OVA which is essentially a packet generator that pushes attacks, web…

By Manny Fernandez

November 25, 2019

Upgrading Ubuntu 18.0.4 LTS to 19.0.4

If you are running Ubuntu 18.0.4 LTS you CAN upgrade to 19.0.4.  LTS is long-term support while the non-LTS is…

By Manny Fernandez

October 2, 2019

Installing Tor on Ubuntu 19.04 and Windows 10

Yesterday I wrote a post about installing Tor on macOS.  I got a lot of feedback about other OS's.  I…

By Manny Fernandez

September 19, 2019

Installing FortiClient on Ubuntu Linux for SSL VPN

I ran Windows as my main Desktop OS for many years.  When XP came out, I decided to move to…

By Manny Fernandez

August 11, 2019

Installing Greenbone Vulnerability Manager

If you have even followed InfoSec, Cyber or whatever you want to call it, you will know that vulnerable code…

By Manny Fernandez

April 24, 2019

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