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sysctl -w fs.file-max=12000500
sysctl -w fs.nr_open=20000500
ulimit -n 4000000
sysctl -w net.ipv4.tcp_mem='10000000 10000000 10000000'
sysctl -w net.ipv4.tcp_rmem='1024 4096 16384'
sysctl -w net.ipv4.tcp_wmem='1024 4096 16384'
sysctl -w net.core.rmem_max=16384
sysctl -w net.core.wmem_max=16384
wget http://packages.erlang-solutions.com/erlang-solutions_1.0_all.deb
sudo dpkg -i erlang-solutions_1.0_all.deb

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# Configuration file for runtime kernel parameters.
# See sysctl.conf(5) for more information.

# See also http://www.nateware.com/linux-network-tuning-for-2013.html for
# an explanation about some of these parameters, and instructions for
# a few other tweaks outside this file.

# Protection from SYN flood attack.
net.ipv4.tcp_syncookies = 1

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/*
 PoC WhatsApp enumeration of phonenumbers, profile pics, about texts and online statuses
 Floated div edition
 01-05-2017
 (c) 2017 - Loran Kloeze - [email protected]
 
 This script creates a UI on top of the WhatsApp Web interface. It enumerates certain kinds
 of information from a range of phonenumbers. It doesn't matter if these numbers are part
 of your contact list. At the end a table is displayed containing phonenumbers, profile pics, 
 about texts and online statuses. The online statuses are being updated every

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encrypted backup to s3

init encfs

• first time mounting with
  • encfs --reverse /path/to/backup /tmp/encrypted-s3-backup
• i choose this settings:
  • x - expert mode
  • AES encryption - 256 bit keysize

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TARBALL=caddy.tar.gz
TARGET=/opt/caddy

echo "downloading caddy"
wget -O $TARBALL "https://caddyserver.com/download/linux/amd64?plugins=http.cors,http.expires,http.filter,http.ipfilter,http.minify,http.ratelimit"

echo "creating target directory"
sudo mkdir -p $TARGET

echo "extracting caddy"

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#!/bin/sh

cd $(mktemp -d) && \
  wget http://download.redis.io/redis-stable.tar.gz && \
  tar -xvzf redis-stable.tar.gz && \
  cd redis-stable && \
  make && \
  sudo cp src/redis-cli /usr/local/bin

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extract ova files from an archive

$ tar -xvf vmName.ova

modify ovf for some invalid tag

$ vi vmName.ovf

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#!/bin/bash
set -e

SCREENSHOT_PATH="~/Pictures/Screenshots"
printf "save screenshots in $SCREENSHOT_PATH\n"
mkdir $SCREENSHOT_PATH && cd $SCREENSHOT_PATH && defaults write com.apple.screencapture location $(pwd)

printf "install homebrew!\n"
/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

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Install VCSA 6.5 without hash mismatch error!

requirements

• esxi host
• dns or ip for both - esx and vcenter
• correct time settings (ntp automates this, can be enabled on the esx-host)
• use vcsa-cli installer (the iso contains vcsa-cli for win/lin/mac os)
• "skipManifestCheck": "true" because of reasons (the installer repeatedly failed to verify integrity hashes of the created vm)
• "os.password" and "sso.password" HAVE to pass vmware's pw rules PLUS their dictionary! (verification will pass with a pw in their dictionary but setup will not be able to complete! - we stumbled across this by pure chance after trying for 2 whole days!)

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# create a user service for our ssh-agent
mkdir -p .config/systemd/user/
cat > .config/systemd/user/ssh-agent.service <<EOF
[Unit]
Description=SSH key agent

[Service]
Type=simple
Environment=SSH_AUTH_SOCK=%t/ssh-agent.socket
ExecStart=/usr/bin/ssh-agent -D -a $SSH_AUTH_SOCK