Latest arcticles

Fix for laggy KWin when pausing and restarting Compositor

In my Optimus Laptop with an NVIDIA 1050TI, if I plug an external monitor and restart compositor, KWin gets very laggy, redenring it unusable. In order to partially fix that, go to Desktop Effects settings and turn on Background contrast. Unplug the monitor, turn compositor ON and replug the external monitor. This solves the problem… read more »

Patch firmware of QCA6174 Wireless Card to accept packet injection and monitoring

This was tested and works on an XPS 15 9560 and Dell Gaming 15 – 7567 with QCA6174 STEPS:1- Download 2- Make a copy of /lib/firmware/ath10k/QCA6174/hw3.0/firmware-6.bin 3- Change downloaded file name, permissions(chmod), owner(chown) and group(chgrp) to match the original firmware-6.bin 4- Run this (replace wlp2s0 with your interface name):Code: [Select]sudo airmon-ng stop wlp2s0 && sudo airmon-ng… read more »

Fixing weird behaviour of NetworkManager on 5GHz

While using Arch, I noticed that 5GHz networks weren’t connecting right away, and sometimes they even didn’t appear. A simple workaround I found to prevent 5GHz networks from disconnecting or delaying to connect is shown below. Edit /etc/NetworkManager/NetworkManager.conf and add *My file was empty before editing*

Stuttering audio in PulseAudio

I unmasked PulseAudio 10.0 back in January 2017 and installed it in my Gentoo Stable amd64 installation, and everything worked fine… until a couple of days ago, when the audio in streaming YouTube videos started to stutter every so often. It sounded rather like a scratched LP jumping. At first I thought the problem lay… read more »

Vulnerability on Overtek ONU authorization method

Instead of using cookies for authenticating clients and linking them to their respective sessions, Overtek OT-4020vw detects the client IP address and allow administrative privileges, with the right password, to that IP. That means that if you have an infrastructure like the following, all computers in a subnet would have access to the admin panel… read more »

Fix for low/weak/poor wifi signal en Redmi Note 3 PRO (Kenzo)(SD)

Okay, since many people are having this problem lately, i will show the solution that worked for me and for others around the web. My wifi range suddenly was reduced and I still don’t know why. If you are having the same problem, you should try this procedure. I dont have a Mediatek(KATE) version to… read more »

Quick fix for SSL problems with apache in virtualmin

Virtualmin is a great hosting panel, but it has its bugs and glitches. In this time, Let’s Encrypt certificates was generated correctly, but apache wasnt using the new valid certificate, causing security alerts on browser. All I had to do was: Go to /etc/httpd/conf.d/ssl.conf Change the path of the default certificate to the one that… read more »

DOS attacks on servers with enabled SSL Renegotiations

This script acts on a security failure present in older(2003) versions of apache. Estabilishing a secure SSL connection requires 15x more processing power on the server than the client. By exploiting this asymmetric property, the client sends thousands of renegotiation requests in the same TCP connection. When server gets overloaded, it stop serving further requests…. read more »