BAEHREL JEAN ROBERT NETWORK AND COMPUTER SYSTEMS ADMINISTRATOR

Hi and welcome to my portfolio !

Hi i'm Jean, welcome here, i'm actually working as a System Administrator in a Hosting Group.
Here you can check my skills and see what is my associate experience with them. I'm passionate about IT, linux, open sources technologies, the english language and culture.

I run several servers. I get used to Red Hat and Arch.

You can spot the timeline of my work HERE so you can see on what I'm actually working.

SKILLS

OS
- LINUX
  All begun with tutorials of running a LAMP server on a Raspberry Pi. I really like the KISS method, I'm in my element when I work on Archlinux or Slackware. With my work I learned Red Hat/Centos Admin. LPIC-1 certified.
- WINDOWS
  I do basic admin operations on windows desktop and servers, I'm also part of windows insider program.
- CISCO IOS/XR
  Mainly, I manage cisco switches and get some experience on routers.

TECHNICAL
- SERVICES
  My day to day job is to install/monitor linux servers and applications. Mainly docker, varnish, apache/nginx, MySQL/Mongodb/Postgresql, postfix, bind, etc...
- NETWORKING
  I'm Cisco CCNA Certified, as I want to be fully operational and autonomous, I decided to learn with the Cisco certification program because it's a renowned Industry name, I'm heading toward the CCNP.
- FIREWALLS
  Managing firewalls : fortinet, pfsense, iptables.
- SECURITY
  - DDOS attacks mitigations.
  - Servers intrusion detection and compromission detection by logs analysis.
  - Web Applications security.
  - User education and strong policy rules.
  - Actually SSCP certified and I'm searching for my next security certification before CISSP.
- SYSTEM ADMINISTRATION
  Using ansible, python and bash. Monitoring with rrd, prometheus, grafana.
- DATABASES
  Installing, tuning, debugging, user management of PostgreSQL, MySQL, MongoDB

VCS & OTHERS
- GIT
- VI

Experiences :

Since 2018 I'm working at SdV (Strasbourg, France) as a System administrator :

Operating system updates, patches, and configuration changes.
Log analysis.
User management.
Answering technical queries and assisting users, L1 and L2 support.
Ensuring security and always staying up to date with CVE and reports.
Documenting the configuration of the system.
Troubleshooting problems.
System performance tuning.
Ensuring that the infrastructure, network and systems are up and running, 24/7 standby by period of 7 days.
Developpement and maintenance of tools.
docker and kubernetes administration.
Firewalls management.
Web administration.
Security administration.
Databases administration.

My Web Work :

Draw Online : an Online Drawing Application.

My Dev Work :

HarlockKeygen : a cli password generator written in C.

Courses/Training :

Cisco CCNA.
ISC2 SSCP.
LPIC-1.
Cybersecurity For Business, University of Colorado.
International Cyber Conflicts, SUNNY.
http://opensecuritytraining.info/IntroX86, Introductory Intel x86: Architecture, Assembly, Applications, & Alliteration
The complete Cyber Security course Part 1,2,3,4, Nathan House, Udemy.
Docker containers deployment courses and exercises, as part of my Admin job.
MongoDB M001, M103, M201, MongoDB university.
Cyberhacker series: Honeypots, IDS and Firewalls, Udemy.
The complete NMAP Ethical Hacking Course, Nathan House, Udemy.

My Projects :

Training docker/kubernetes applications
As a personnal goal, I head myself to Cybersecurity and people online protection