ARIEL MARTINEZ
Linux+ CCNA Security+ A+
// interactive terminal — type help to start
bash — ariel@martinez:~ 80×24
ariel@martinez:~$

about
ARIEL MARTINEZ
IT Enthuasiast · LINUX · NETWORKING · SECURITY

Certified in networking, security, and Linux, with a foundation in systems administration and network infrastructure. Currently seeking my an IT role while continuing to build hands-on experience through labs and personal projects.

I'm particularly drawn to Linux systems and low-level programming — kernel modules, how the network stack actually processes packets, what's happening underneath the tools most people just configure. My netfilter firewall project came from wanting to understand what iptables is doing under the hood.

// Certifications
CompTIA Linux+
CompTIA · Systems Administration
Cisco CCNA
Cisco · Routing & Switching
CompTIA Security+
CompTIA · Information Security
CompTIA A+

projects
proj_001  ·  C / LINUX KERNEL
Netfilter Packet Filter Firewall
Built a custom packet-filtering firewall as a Linux kernel module in C, using the netfilter framework to inspect and filter traffic at the kernel level. Designed a three-VM network environment with an attacker, gateway firewall, and internal server across separate subnets. Implemented IP routing, port-based filtering, dynamic IP blocking via /proc, and kernel-level logging.
C Linux Kernel Netfilter VMware Fusion Ubuntu Server 24.04
proj_002  ·  WINDOWS SERVER / SYSADMIN
Active Directory Lab
Configured and managed a Windows Active Directory environment within a virtual machine, including the creation and administration of multiple user accounts, groups, and organizational units. Implemented core identity and access management concepts such as user permissions, group policies, and centralized authentication, demonstrating practical experience with enterprise-level directory services.
Windows Server Active Directory Group Policy PowerShell DNS / DHCP

contact

I’m seeking an opportunity in IT or broader technical roles, including Linux administration, networking, or systems-focused work, where I can contribute, continue learning, and grow in a real-world environment. Always interested in learning something new while building a strong foudnation!

emailthearielmartinez@gmail.com
locationBrunswick, GA