1.1 Scanning

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 1/77

www.vncert.gov.vn

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 2/77

www.vncert.gov.vn

SCANNING

Module 4

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 3/77

www.vncert.gov.vn

Content

1•

Definition of scanning

2 • Types and objectives of Scanning

 3 • Checking live systems and open ports

4• Understanding scanning techniques

5 • Different tools present to perform Scanning

6 • Understanding banner grabbing and OS fingerprinting

7 • Drawing network diagrams of vulnerable host

8 • Preparing proxies

9 • Scanning countermeasures

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 4/77

www.vncert.gov.vn

Scanning - Definition

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 5/77

www.vncert.gov.vn

Types of Scanning

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 6/77

www.vncert.gov.vn

Objectives of Scanning

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 7/77

www.vncert.gov.vn

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 8/77

www.vncert.gov.vn

Checking for Live Systems - ICMP

Scanning

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 9/77

www.vncert.gov.vn

 Angry IP Scanner

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 10/77

www.vncert.gov.vn

 Angry IP Scanner: Screenshot

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 11/77

www.vncert.gov.vn

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 12/77

www.vncert.gov.vn

Three Way Handshake

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 13/77

www.vncert.gov.vn

Three Way Handshake: Screenshot

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 14/77

www.vncert.gov.vn

TCP Communication Flags

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 15/77

www.vncert.gov.vn

Nmap

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 16/77

www.vncert.gov.vn

Nmap: Screenshot

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 17/77

www.vncert.gov.vn

Nmap: Scan Methods

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 18/77

www.vncert.gov.vn

Nmap: Scan Methods

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 19/77

www.vncert.gov.vn

NMAP Scan Options

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 20/77

www.vncert.gov.vn

NMAP Output Format

t

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 21/77

www.vncert.gov.vn

NMAP Timing Options

t

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 22/77

www.vncert.gov.vn

NMAP Options

ncert go n

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 23/77

www.vncert.gov.vn

HPING2

www vncert gov vn

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 24/77

www.vncert.gov.vn

Hping2 Commands

www vncert gov vn

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 25/77

www.vncert.gov.vn

SYN Stealth / Half Open Scan

www vncert gov vn

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 26/77

www.vncert.gov.vn

Stealth Scan

www vncert gov vn

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 27/77

www.vncert.gov.vn

 Xmas Scan

www vncert gov vn

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 28/77

www.vncert.gov.vn

FIN Scan

www vncert gov vn

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 29/77

www.vncert.gov.vn

NULL Scan

www vncert gov vn

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 30/77

www.vncert.gov.vn

IDLE Scan

www vncert gov vn

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 31/77

www.vncert.gov.vn

IDLE Scan: Basics

www.vncert.gov.vn

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 32/77

www.vncert.gov.vn

IDLE Scan: Step 1

www.vncert.gov.vn

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 33/77

www.vncert.gov.vn

IDLE Scan: Step 2.1 (Open Port)

www.vncert.gov.vn

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 34/77

www.vncert.gov.vn

IDLE Scan: Step 2.2 (Closed Port)

www.vncert.gov.vn

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 35/77

g

IDLE Scan: Step 3

www.vncert.gov.vn

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 36/77

g

ICMP Echo Scanning/List Scan

www.vncert.gov.vn

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 37/77

g

TCP Connect / Full Open Scan

www.vncert.gov.vn

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 38/77

g

www.vncert.gov.vn

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 39/77

 War Dialer Technique

www.vncert.gov.vn

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 40/77

 Why War Dialing?

www.vncert.gov.vn

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 41/77

 Wardialing

www.vncert.gov.vn

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 42/77

PhoneSweep – War Dialing Tool

www.vncert.gov.vn

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 43/77

THC Scan

www.vncert.gov.vn

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 44/77

ToneLoc

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 45/77

www.vncert.gov.vn

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 46/77

 War Dialing CountermeasuresSandTrap Tool

www.vncert.gov.vn

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 47/77

www.vncert.gov.vn

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 48/77

OS Fingerprinting

www.vncert.gov.vn

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 49/77

 Active Stack Fingerprinting

www.vncert.gov.vn

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 50/77

Passive Fingerprinting

www.vncert.gov.vn

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 51/77

 Active Banner Grabbing Using Telnet

www.vncert.gov.vn

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 52/77

GET REQUESTS

www.vncert.gov.vn

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 53/77

p0f – Banner Grabbing Tool

www.vncert.gov.vn

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 54/77

p0f for Windows

www.vncert.gov.vn

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 55/77

Httprint Banner Grabbing Tool

www.vncert.gov.vn

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 56/77

Httprint: Screenshot

www.vncert.gov.vn

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 57/77

Tools for Active Stack Fingerprinting

www.vncert.gov.vn

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 58/77

Netcraft

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 59/77

www.vncert.gov.vn

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 60/77

Nessus

www.vncert.gov.vn

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 61/77

Nessus: Screenshot 1

www.vncert.gov.vn

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 62/77

Nessus: Screenshot 2

www.vncert.gov.vn

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 63/77

GFI LANGuard

www.vncert.gov.vn

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 64/77

GFI LANGuard Features

www.vncert.gov.vn

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 65/77

Retina

www.vncert.gov.vn

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 66/77

Retina: Screenshot

www.vncert.gov.vn

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 67/77

www.vncert.gov.vn

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 68/77

FriendlyPinger

www.vncert.gov.vn

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 69/77

www.vncert.gov.vn

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 70/77

Proxy Servers

www.vncert.gov.vn

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 71/77

Use of Proxies for Attack

www.vncert.gov.vn

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 72/77

Free Proxy Servers (1/2)

www.vncert.gov.vn

( )

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 73/77

Free Proxy Servers (2/2)

www.vncert.gov.vn

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 74/77

SocksChain

www.vncert.gov.vn

l h

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 75/77

HTTP Tunneling Techniques

www.vncert.gov.vn

h d l

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 76/77

 Why Do I Need HTTP Tunneling

www.vncert.gov.vn

7/29/2019 1.1 Scanning

http://slidepdf.com/reader/full/11-scanning 77/77

Scanning Countermeasures