Networking

Seite 1

Ethical hacking pre-requsite:

- IP Address

Type Define:

1. IP ver6

a.128bit, Subnet is not possible

2. IP ver4

a.IP: 32bit, Subnet possible in this IP4 version.

b.192.168.2.4= 11000000(192)8bit created

Classes:

Class A : 0 to 126

Class B : 128 to 191

Class C : 192 to 223

Note=: 0.0.0.0 is invalid ip

-127 IP is resverd for loopback ip

-D and E class used for R & D purpose

PORT:

Physical port

Logical port: 1024 is resverd for OS service

TOTAL PORT:65535

PORT NUMBER:

Find TCP and UDP port (Task)

- DHCP: 6-/ 8---> Dynamic host control protocol

- RDP: 3389 ---> Remote Desktop protocol

- SMTP: 58---> Simple Mail Transfer Protocol

- POP: 110---> Post Office Protocol

- IMAP : 143---> Internet Message access protocol

- NETBIOS : 138---> Network Basic Input/Output System

- TELNET : 23--->

- TCP : 5---> Transmission Control Protocol

- UDP : 6---> User Datagram Protocol

- NTP :123---> Network Time Protocol

- RIP : 520---> Routing information protocol

- HTTP : 80---> Hyper text transfer protocol

- HTTPS : 443--->Hyper text transfer

- FTP : 21---> File transfer protocol

- TFTP : 69---> Trivial File Transfer Protocol

- DNS : 53---> Domain Name System

- kerbros : 88--->

- LDAP: 389 ---> Lightweight Directory Access Protocol

- IRC: 6667---> Internet Relay Chat

SysLog : 514---> SystemLogging

VPN : 1194---> Virtual Private Network

VMWAE: 902--->

SSH: 22--->Secure Shell

SMB: 445---> Server Message Black

Sockets and Protocol

Task:

Find all the full form of above port

Find out protocol in each OSI Layer

Application: DNS, FTP, HTTP,HTTPS, IMAP4, POP3,SFTP,SMTP,SSH,Telnet

Presentation: cryptography, encrption

Session: NetBios, NFS, PAP, SCP, SQL, ZIP

Transport: TCP-UDP

Network: IPV4, IPV6, IPsec, ICMAP

DataLink: MAC, ARN,NDP. VLAN's

Physical: Ethernet, cabling protocol,802.11, wifi

Protocol : Set of rules

Socket: IP+Port= Socket

OSI MODEL:

Networking command in windows:

Open service manager: services.msc

nslookup

Task firewall enable or disable

To Turn Off:

NetSh Advfirewall set allprofiles state off

To Turn On:

NetSh Advfirewall set allprofiles state on

To check the status of Windows Firewall:

Netsh Advfirewall show allprofiles

Task advance forcefully close the firewall

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