frntn

.ssh

Security Consideration

About SSH Agent Forwarding :

SSH Agent forwarding exposes your authentication to the server you're connecting to. By default, an attacker with control of the server (i.e. root access) can communicate with your agent and use your key to authenticate to other servers without any notification (i.e. impersonate you).

frntn

SKS Keyserver Network Under Attack

This work is released under a Creative Commons Attribution-NoDerivatives 4.0 International License.

Terminological Note

"OpenPGP" refers to the OpenPGP protocol, in much the same way that HTML refers to the protocol that specifies how to write a web page. "GnuPG", "SequoiaPGP", "OpenPGP.js", and others are implementations of the OpenPGP protocol in the same way that Mozilla Firefox, Google Chromium, and Microsoft Edge refer to software packages that process HTML data.

Who am I?

frntn

Safest way to clean up boot partition - Ubuntu 14.04LTS-x64

Reference

Case I: if /boot is not 100% full and apt is working

1. Check the current kernel version

$ uname -r 

frntn

#!/bin/bash

# Calculates network and broadcast based on supplied ip address and netmask

# Usage: broadcast_calc.sh 192.168.0.1 255.255.255.0
# Usage: broadcast_calc.sh 192.168.0.1/24


tonum() {
    if [[ $1 =~ ([[:digit:]]+)\.([[:digit:]]+)\.([[:digit:]]+)\.([[:digit:]]+) ]]; then

frntn

$ git clone https://github.com/QubesOS/qubes-secpack.git

$ cd qubes-secpack

$ gpg --import keys/*/*
gpg: key C37BB66B: public key "Joanna Rutkowska (Qubes OS signing key) <joanna@invisiblethingslab.com>" imported
gpg: key 1E30A75D: public key "Joanna Rutkowska (Qubes OS signing key) <joanna@invisiblethingslab.com>" imported
gpg: key 74EADABC: public key "Joanna Rutkowska (Qubes OS signing key) <joanna@invisiblethingslab.com>" imported
gpg: key 65EF29CA: public key "Joanna Rutkowska (Qubes OS Signing Key) <joanna@invisiblethingslab.com>" imported
gpg: key 34898310: public key "Joanna Rutkowska (Qubes OS Signing Key) <joanna@invisiblethingslab.com>" imported

frntn

Uploading private keys

https://github.com/keybase/keybase-issues/issues/160#issuecomment-37070418

frntn

#!/bin/bash

echo -n $'\x63\x61\x74'             > before.txt
echo -n $'\x63\n\x61\n\x74\n'       > before_lf.txt
echo -n $'\x63\r\n\x61\r\n\x74\r\n' > before_crlf.txt
echo -n $'\x63\r\x61\r\x74\r'       > before_cr.txt

echo -n $'\x01\x63\x61\x74'             > before.bin
echo -n $'\x01\x63\n\x61\n\x74\n'       > before_lf.bin
echo -n $'\x01\x63\r\n\x61\r\n\x74\r\n' > before_crlf.bin

frntn

# add this to your .bashrc
function genpass {
  isint='^[1-9][0-9]*$'
  [[ $1 =~ $isint ]] && count=$1 || count=1
  [[ $2 =~ $isint ]] && len=$2   || len=10
  for i in $(seq 1 $count); do </dev/urandom tr -dc A-Za-z0-9 | head -c$len ; echo ; done
}

frntn

#!/bin/bash

# just put this at the beginning of your scripts
trap "{ sleep 1; }" EXIT
red="" ; [ -t 1 ] && [ -t 2 ] && red="$(tput setaf 1)"
rst="" ; [ -t 1 ] && [ -t 2 ] && rst="$(tput sgr0)"
logdir="/tmp"
exec 3> "$logdir/raw.log"
exec 2> >( awk '{print strftime("%Y%m%dT%H:%M:%S%z")" - STDERR - "$0 ; fflush(stdout)}' | tee -a $logdir/${0%.*}.err > >( awk '{print "'$red'"$0"'$rst'" ; fflush(stdout)}' ))
exec 1> >( awk '{print strftime("%Y%m%dT%H:%M:%S%z")" - STDOUT - "$0 ; fflush(stdout)}' | tee -a $logdir/${0%.*}.out)

frntn

#!/bin/bash

# Author: Matthieu Fronton <m@tthieu.fr>
# Profile: github.com/frntn
# Description: GnuPG web of trust : automate multiple scenarii to help the understanding of https://www.gnupg.org/gph/en/manual/x334.html 

WAIT=4

if [ -t 1 ]; then
cya="$(tput setaf 6)"