Abellache Rabah

Abellache Rabah

I'm Rabah Abellache, a Systems and Network Administrator studying for my Master's at Université d'Évry Paris-Saclay. Passionate about network architecture, system administration, and security

Rabah Abellache - System and Network Administrator

About Me

I am a passionate Systems and Networks student currently pursuing my Master’s in Computer Systems and Networks at the University of Évry Paris-Saclay. With a strong foundation in network architecture, system administration, and security, I am dedicated to designing and implementing robust, high-availability infrastructure solutions.

My technical expertise spans network protocols, Linux/BSD systems, virtualization technologies, and DevOps practices. I am particularly interested in redundant network architectures, secure backup solutions, and high-availability systems.

Education

  • Master 1 in Computer Systems and Networks (2024)
    University of Évry Paris-Saclay
    Focus: System and Network Administration, Internet Protocols, Advanced Networks, Database Administration, Cryptography and Security

  • Master 1 in Intelligent Systems (2023-2024)
    Ahmed Draya University of Adrar
    Focus: AI Problem Solving, Decision Support Systems, Neural Networks, Distributed Systems, Advanced Networks, Advanced Databases

  • Bachelor’s in Computer Systems (2022-2023)
    Ahmed Draya University of Adrar
    Focus: Software Engineering, Operating Systems, HCI, Computer Security, Algorithms, Data Structures, Programming/Development

Technical Skills

  • Networking: TCP/IP, UDP, TLS, DNS, DHCP, VPN, VLAN, NAT, VRRP, CLAG, LACP, CARP/pfsync, iptables/nftables
  • Systems: Linux (Debian/CentOS), Windows, BSD
  • DevOps: Ansible, Git/Github, Docker, Podman
  • Virtualization: VMWare, KVM
  • Databases: MongoDB, MySQL, SQL Developer
  • Scripting: Bash, Python
  • Tools: Wireshark, iPerf3, nmap

Notable Projects

Redundant “Leaf-Spine” Network Architecture

Implemented a leaf-spine topology with high redundancy and availability:

  • Technologies: CLAG (layer 2 redundancy), VRRP (layer 3 redundancy), VLANs (isolation), NFS, LACP (link aggregation)
  • Tools: Cumulus Linux, Ansible (automation), Wireshark, VMware
  • Results: Failover <1s, high availability, load balancing, flow isolation with maintenance of critical access

Enterprise Centralized Backup Solution

Implemented an Enterprise Backup Infrastructure:

  • Technologies: BorgBackup (encrypted/deduplicated backup), rsync (secure incremental transfer), ZFS (reliable storage with snapshots), SSH/SSHFS (end-to-end encryption), Cron (automation)
  • Tools: Borg, WireGuard, OpenZFS, VMware
  • Results: Anti-ransomware pull-based architecture, 85% space savings, RPO <1h

High Availability VPN and Firewall Infrastructure

Implemented a Network Security Infrastructure:

  • Technologies: OpenVPN, CARP/pfSync (automatic failover and synchronization), OpenBSD
  • Results: 99.99% firewall availability, secure remote access

Professional Experience

Network/System Administration Internship (September 2023 - July 2024)
Ahmed Draya University of Adrar

  • Participated in the configuration and installation of network infrastructure
  • Installed operating systems (Linux and Windows)
  • Assisted with hardware installation (routers, cabling, etc.) to support network deployment

Contact

I am currently seeking opportunities to apply my knowledge while continuing to learn from experts in the field. Feel free to reach out if you’re interested in collaborating or have opportunities that align with my skills and interests.