---
title: "Muzasio (@Muzasio) | Hashnode"
description: "Cybersecurity researcher documenting what breaks, what works, and why. Purple team track. CachyOS daily driver. Read the latest articles by Muzasio on Hashnode."
url: "https://hashnode.com/@Muzasio"
---

@Muzasio

# Muzasio

@Muzasio · Pakistan · Joined March 2026

Cybersecurity researcher documenting what breaks, what works, and why. Purple team track. CachyOS daily driver.

### [Store-and-Forward: What a Router Really Does With Your Packet](https://muzasio.hashnode.dev/store-and-forward-what-a-router-really-does-with-your-packet?utm_source=hashnode&utm_medium=feed)

Most of us studied circuit and packet switching as course material. Here is what it actually looks like inside a router. The textbook defines store-and-forward in one sentence: a packet switch "must r

18 min read · [muzasio.hashnode.dev](https://muzasio.hashnode.dev/store-and-forward-what-a-router-really-does-with-your-packet?utm_source=hashnode&utm_medium=feed)

[Oct 21](https://hashnode.com/posts/store-and-forward-what-a-router-really-does-with-your-packet/6ad91702786cf66498f3c236)

### [Learning TCP/IP From the Linux Side: Spec, Code, and Wire](https://muzasio.hashnode.dev/learning-tcp-ip-from-the-linux-side-spec-code-and-wire?utm_source=hashnode&utm_medium=feed)

My networking notes used to be full of layer names, header diagrams, and TCP flags. I knew the terminology, but when someone asked what happens after calling send(), my explanation stopped at "the dat

10 min read · [muzasio.hashnode.dev](https://muzasio.hashnode.dev/learning-tcp-ip-from-the-linux-side-spec-code-and-wire?utm_source=hashnode&utm_medium=feed)

[Oct 13](https://hashnode.com/posts/learning-tcp-ip-from-the-linux-side-spec-code-and-wire/6ace87d3f173c00423f638ad)

### [Containers Are Isolated, But They Still Share the Kernel](https://muzasio.hashnode.dev/containers-are-isolated-but-they-still-share-the-kernel?utm_source=hashnode&utm_medium=feed)

Learn how Linux containers use namespaces, cgroups, capabilities, seccomp, and LSMs for isolation where kernel vulnerabilities can break that boundary

13 min read · [muzasio.hashnode.dev](https://muzasio.hashnode.dev/containers-are-isolated-but-they-still-share-the-kernel?utm_source=hashnode&utm_medium=feed)

[Oct 7](https://hashnode.com/posts/containers-are-isolated-but-they-still-share-the-kernel/6ac6a00b4719e1ce2d40b307)

### [LibreWolf Stopped Playing Videos After the FFmpeg 9 Update](https://muzasio.hashnode.dev/librewolf-stopped-playing-videos-after-the-ffmpeg-9-update?utm_source=hashnode&utm_medium=feed)

LibreWolf stopped playing videos after the FFmpeg 8 to 9 update on Arch Linux. Here’s how I traced the issue and tested ffmpeg4.4 as a workaround.

6 min read · [muzasio.hashnode.dev](https://muzasio.hashnode.dev/librewolf-stopped-playing-videos-after-the-ffmpeg-9-update?utm_source=hashnode&utm_medium=feed)

[Sep 30](https://hashnode.com/posts/librewolf-stopped-playing-videos-after-the-ffmpeg-9-update/6abd177a6a1371f21828bf72)

### [KWin Crashed Every Time I Fullscreened Edge on My Second Monitor: Direct Scanout Was the Culprit](https://muzasio.hashnode.dev/kwin-crashed-every-time-i-fullscreened-edge-on-my-second-monitor-direct-scanout-was-the-culprit?utm_source=hashnode&utm_medium=feed)

A reproducible KWin Wayland crash when fullscreening Edge on a second monitor, traced to direct scanout.

5 min read · [muzasio.hashnode.dev](https://muzasio.hashnode.dev/kwin-crashed-every-time-i-fullscreened-edge-on-my-second-monitor-direct-scanout-was-the-culprit?utm_source=hashnode&utm_medium=feed)

[Sep 23](https://hashnode.com/posts/kwin-crashed-every-time-i-fullscreened-edge-on-my-second-monitor-direct-scanout-was-the-culprit/6ab41508149a1c399e352ce6)