Ivlyth

• Installation
  • Environment Setup
  • Install PF Ring
  • Install Bro
  • Install YAF
  • Install Fastcapa
• Management
  • Bro
  • YAF
• Fastcapa

Ivlyth

Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD

Ivlyth

• What do Etcd, Consul, and Zookeeper do?
  • Service Registration:
    • Host, port number, and sometimes authentication credentials, protocols, versions numbers, and/or environment details.
  • Service Discovery:
    • Ability for client application to query the central registry to learn of service location.
  • Consistent and durable general-purpose K/V store across distributed system.
    • Some solutions support this better than others.
    • Based on Paxos or some derivative (i.e. Raft) algorithm to quickly converge to a consistent state.
• Centralized locking can be based on this K/V store.

Ivlyth

To remove a submodule you need to:

• Delete the relevant section from the .gitmodules file.
• Stage the .gitmodules changes git add .gitmodules
• Delete the relevant section from .git/config.
• Run git rm --cached path_to_submodule (no trailing slash).
• Run rm -rf .git/modules/path_to_submodule (no trailing slash).
• Commit git commit -m "Removed submodule "
• Delete the now untracked submodule files rm -rf path_to_submodule

Ivlyth

#!/bin/bash

GFWLIST=https://autoproxy-gfwlist.googlecode.com/svn/trunk/gfwlist.txt
PROXY=127.0.0.1:7070

cd `dirname "${BASH_SOURCE[0]}"`
echo "Downloading gfwlist from $GFWLIST"
curl "$GFWLIST" --socks5-hostname "$PROXY" > /tmp/gfwlist.txt
/usr/local/bin/gfwlist2pac \
    --input /tmp/gfwlist.txt \

Ivlyth

#!/usr/bin/env python
# Author: Chris Eberle <eberle1080@gmail.com>
# Watch for any changes in a module or package, and reload it automatically

import pyinotify
import imp
import os

class ModuleWatcher(pyinotify.ProcessEvent):
    """

Ivlyth

import sys
import win32com.client
openedDoc = win32com.client.Dispatch("Excel.Application")
filename= sys.argv[1]

password_file = open ( 'wordlist.lst', 'r' )
passwords = password_file.readlines()
password_file.close()

passwords = [item.rstrip('\n') for item in passwords]

Ivlyth

// Use Gists to store code you would like to remember later on
console.log(window); // log the "window" object to the console