Cybersecurity

Welcome to my Cybersecurity Portfolio! As a dedicated defender of the digital realm, I am passionate about fortifying networks, safeguarding data, and warding off cyber threats. Explore my projects, expertise, and certifications I am currently pursuing.
black iphone 10 beside brown framed eyeglasses and black iphone 5 c
black iphone 10 beside brown framed eyeglasses and black iphone 5 c
Project 1: Scripting for Security

WHAT I DID

I wrote a script in Debian that would check listening ports and if any of them are changed it would notify me by adding it to a list. I opened a new tab on the Debian machine and ran netcat, which is a command that opens a random port on the local workstation. I then automated the task by using crontab and editing the nano file to run every 5 minutes.

Tools used:

  • Debian

  • Bash

  • Netstat

  • Crontab

  • Netcat

  • Grep

  • md5sum

WHAT I LEARNED

By creating this script, I learned valuable skills in Bash scripting and handling text data using commands like "grep, cut, and md5sum." I also gained insights into monitoring open ports and comparing data for changes. Through this project, I honed my ability to automate repetitive tasks by combining it with the crontab command.

Project 2: Network Configuration & Security

WHAT I DID

Successfully set up a network to ensure availability and security. Designed network topology based on corporate/user needs. Configured LAN, multiple subnets, VLANs, trunking/ inter-VLAN routing (when applicable), and dynamic & static routing as needed. Troubleshot and resolved endpoint connectivity and stability issues. Used Cisco proprietary networking hardware and software to strengthen security through set of ACLs, port security, implemented stronger credential requirements, and created a blueprint for the network.

Tools used:

  • Cisco Packet Tracer

  • TCP/IP Model

  • DHCP

  • DNS

  • Subnetting

  • Cisco IOS

  • Routing

  • Switching

  • OSPF

  • WAN & LAN

  • VPN

WHAT I LEARNED

Networking was challenging but rewarding when everything started talking to each other. Subnetting in particular was challenging, though understanding fundamental networking concepts and basic security protocols was helpful. I enjoyed troubleshooting and the problem-solving process. Protecting and defending networks seems to be foundational to many job roles in IT/cybersecurity.

Project 3: Domain Troubleshooting

WHAT I DID

Granted appropriate access to users by adding them to a domain, creating group policy rules, and updating permissions in the Active Directory. Verified host machine configurations and ran a series of tests to ensure server and client virtual machines were communicating properly. Tests included pinging, sending files, and scanning. Identified issues with endpoint devices, and updated network configurations to ensure they were on the appropriate internal, isolated, or host/client network.

Tools used:

  • VM Windows server 2016

  • VM Windows 7, 10

  • Active Directory

  • Windows Client

  • DHCP server

  • Group Policy Objects

  • PowerShell

  • AppLocker

  • BitLocker

  • Windows Firewall

WHAT I LEARNED

I learned to successfully set up operational domain, corrected issues and errors, and documented issue resolution process within the required time frame. I enjoyed working in an Active Directory environment and using problem solving , of my transferable skills, to troubleshoot and resolve issues

  • Microsoft Security

  • Network Security

  • Network configuration

  • Linux Security

  • Cryptography

  • Cloud Security (AWS)

  • Endpoint Security

  • Network Traffic Analysis

  • VPN Technologies

Skills

  • SIEM

  • pfSense

  • Splunk

  • Honeypot

  • PowerShell

  • Python

  • Bash

  • Wireshark

  • NMAP

Certifications

(currently pursing)

Contact Me

Get in touch with me

Michael.Lesperance822@gmail.com