marcan

import hmac, hashlib

# Data from I²C trace at https://hackaday.io/project/19480-raspberry-pi-camera-v21-reversed/log/52547-i2c-logic-analyzer-trace
# Secret key from VideoCore blob

# serial[8], serial[7:4], serial[3:0]
serial = bytes.fromhex("EE8C196D8301230B59")

# rPi -> camera random number
numIn = bytes.fromhex("5805F3C898C3133154498E082F2E703516F2DBD1")

maxidorius

This configuration is provided AS-IS and as an example/reference for those who do not find a working configuration for themselves. It is not always kept up to date and no support is provided.

Assuming:

• Your Matrix domain: example.org
• Your TURN domain (arbitrary): turn.example.org
• Your Public IP: 1.2.3.4
• Your Private IP for the box hosing the services: 10.11.12.13
• A shared secret between synapse and coturn: ThisIsASharedSecret-ChangeMe
• You want Firefox compatiblity (TURNS only is not supported)

ageis

YubiKey 4 series GPG and SSH setup guide

Written for fairly adept technical users, preferably of Debian GNU/Linux, not for absolute beginners.

You'll probably be working with a single smartcard, so you'll want only one primary key (1. Sign & Certify) and two associated subkeys (2. Encrypt, 3. Authenticate). I've published a Bash function which automates this slightly special key generation process.

c5e3

#!/bin/bash

id=$(pactl list sink-inputs | grep -e 'application.name = "GQRX"' -e 'Sink Input #' | grep 'application.name = "GQRX"' -B1 | head -n1 | sed -e 's/Sink Input #//g')

unmute(){
	pactl set-sink-input-mute $id 0
}

trap "unmute" INT

sagivo

to check if the server works - https://webrtc.github.io/samples/src/content/peerconnection/trickle-ice

stun:
stun.l.google.com:19302,
stun1.l.google.com:19302,
stun2.l.google.com:19302,
stun3.l.google.com:19302,
stun4.l.google.com:19302,
stun.ekiga.net,
stun.ideasip.com,

maikell

Kickstart driven CentOS 7 install from USB

None of what is written below is particularly original, however, I was unable to find a method documented on the internet at the time of writing that successfully created a kickstart driven CentOS 7 USB installer.

My interest was in doing this manually as I require this USB (image) to be created from a script. Therefore, I did not look into using ISO to USB applications - in addition, these typically do not allow custom kickstart files to be used.

References

Much of the process described below was found on the CentOS Wiki page on Installing from USB key, and from the Softpanorama page on the same subject. I thoroughly recommend reading all of the latter as it highlights the shortcomings/dangers associated with the steps below.

USB key preparation

imlonghao

#!/bin/bash

# ----------------
AS=
SUBNET=
ROUTER_ID=
GATEWAY_IP=
SUBNET_v6=
GATEWAY_IP_v6=
SNMP_IP=

williballenthin

radare2

load without any analysis (file header at offset 0x0): r2 -n /path/to/file

• analyze all: aa
• show sections: iS
• list functions: afl
• list imports: ii
• list entrypoints: ie
• seek to function: s sym.main

fevangelou

# === Optimized my.cnf configuration for MySQL/MariaDB (on Ubuntu, CentOS, Almalinux etc. servers) ===
#
# by Fotis Evangelou, developer of Engintron (engintron.com)
#
# ~ Updated December 2021 ~
#
#
# The settings provided below are a starting point for a 8-16 GB RAM server with 4-8 CPU cores.
# If you have different resources available you should adjust accordingly to save CPU, RAM & disk I/O usage.
#

ygotthilf

ssh-keygen -t rsa -b 4096 -m PEM -f jwtRS256.key
# Don't add passphrase
openssl rsa -in jwtRS256.key -pubout -outform PEM -out jwtRS256.key.pub
cat jwtRS256.key
cat jwtRS256.key.pub