NETWORK SECURITY SPECIALIST
5 years of hands-on ISP network work — designing, securing, and running internet infrastructure across Bangladesh. I build the MikroTik routing, firewall, and VPN layers that keep thousands of users online, plus the Python automation that makes it all scale without a bigger team.
Background & Focus
I'm Md. Firoz, an ISP network specialist passionate about high-performance internet infrastructure and intelligent automation. I manage routing, firewall policies, and VPN architectures, and I write Python that automates bandwidth shaping, PPPoE provisioning, and real-time anomaly detection.
On the diagnostic side I work with Wireshark & tcpdump packet captures and custom proxy workflows — turning real traffic into structured insight, then into automation.
Currently sharpening fundamentals with CCNA & CompTIA Network+ while building open-source network monitoring tooling.
class NetworkSecuritySpecialist:
def __init__(self):
self.stack = ["MikroTik", "pfSense", "Cisco"]
self.tools = ["Wireshark", "API Analysis"]
self.uptime = "99%" # target: always
ISP Core & Access
MikroTik RouterOS, PPPoE, bandwidth management, VLAN/routing design, and OLT–ONU fiber operations.
Security & Hardening
Firewall policy, router hardening, VPN architecture, JWT/token inspection, and SSL/TLS traffic analysis.
Python Automation
Provisioning engines, monitoring dashboards, push platforms, and async pipelines that replace manual ops.
API Analysis
Pulling apart app APIs from live traffic, replaying requests, and mapping hidden endpoints to code.
Skills & Toolchain
Five years of field-built expertise, grouped by what actually gets used in production ISP work.
Production Builds
Real tools running in real ISP environments — monitoring, automation, analysis, and delivery.
ANAT — Live Network Monitor
Real-time MikroTik bandwidth aggregator using RouterOS API + asyncio. Per-user throughput graphs, anomaly alerts, and automated QoE reporting.
API Traffic Analysis Pipeline
Proxy workflow and analysis tools to observe encrypted mobile traffic, map API endpoints, and generate Python request blueprints automatically.
PPPoE Provisioning Engine
Bulk user creation, bandwidth profiles, and expiry rotation on MikroTik & FreeRADIUS. Cut provisioning from 15 minutes to 25 seconds per user.
Web Push Notification Hub
VAPID-based push platform with service workers, subscription store, and broadcast targeting — deployed for a local news network.
Let's build something reliable.
Open to network roles, ISP automation contracts, firewall audits, and Python scripting work. Based in Rajshahi, Bangladesh — available worldwide.