I Built a Script That Exposed Every Weakness in My Own Network

Muhummad Zaki

4 min read

·

Oct 9, 2025

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You never really know how bad your network setup is… until your own code exposes it.

Let me explain.

A few months ago, I was experimenting with a home automation system Raspberry Pi clusters, local APIs, some internal services. Everything worked. It looked smart. But deep down, it was a fragile castle built on spaghetti wires and assumptions.

Then one night, I wrote a Python script to “monitor network performance.”
Spoiler: that script turned into a mirror and showed me everything wrong with my setup.

The Plan (that backfired beautifully)

All I wanted was a quick latency report for my connected devices. Simple idea:

Ping every IP in my subnet

Log response times

Send alerts if latency spikes

Here’s where it started:

import os, time
devices = ["192.168.0." + str(i) for i in range(1, 255)]
for ip in devices:
    response = os.system(f"ping -c 1 {ip} > /dev/null 2>&1")
    if response == 0:
        print(f"{ip} is up ✅")
    else:
        print(f"{ip} is down ❌")
    time.sleep(0.1)