7/21/2019 CySec-A1

http://slidepdf.com/reader/full/cysec-a1 1/3

Institute of Technology,

Nirma University.

M.Tech CASAD Semester I

Cyber Security 2014-2015

Sem II

Assignment I

Tejas M. Patil

Roll no. 14MCLC22

M. Tech. 1st Year

Due date - 2nd Feb 2015

1

7/21/2019 CySec-A1

http://slidepdf.com/reader/full/cysec-a1 2/3

Question 1.1How internet works from home and Nirma University   anyorganization? 

Answer,- Each potential user has to register Mac Id of his device which ismapped with unique private ip address by concerned college authorities. After

this, user has to configure his device with proper settings for DNS, Subnet

Mask, Default gateway etc. User is also assigned unique user id and password

for Wathguard security system which ensures confidential and authenticated

internet browsing.

Question 1.2How do you know the network address of a computer 

Answer,-We can find the IP address listed in the Network Connection Details

window IPv4 Address field.

Or a quicker way to find IP address in Windows is by running the ı̈pconfig all

c̈ommand in a Command Prompt window. We can see IP address in the IPv4

Address row beneath the name of your connection.

Question 1.3What is the purpose of the following -

Answer,-

DNS - A DNS sever is where the computer goes to translate a web address that

you type in into a series of numbers and goes to that address. It basically maps

URL with numbered server address.

DHCP

DHCP stands for Dynamic Host Configuration Protocol. the dhcp is an auto

configuration protocol used on ip networks. Computers that are connect to IPnetworks must be configured before they can communicate with other comput-

ers on the network. it also provides a central database for keeping track of 

computers that have been connected to the network. This prevents two com-

puters from accidentally being configured with the same ip address.

Subnet Masking

A subnet mask defines the IP addresses that can exist within a specific subnet,

such as a local area network. It has a similar appearance to an IP address, but

it ”masks” the network part of the IP address.

Digital Certificate

Digital certificate is the ’stamp’ of the encryption used to encrypt the data as-

sociated with the page you are viewing. This is associated with ’secured’ pages

https   that come to your PC as encrypted. You have to ’trust’ the source in

order to view the pages. The main purpose of the digital certificate is to ensurethat the public key contained in the certificate belongs to the entity to which

the certificate was issued

Question 1.4

2

7/21/2019 CySec-A1

http://slidepdf.com/reader/full/cysec-a1 3/3

Do you ever perform Secured Communication? How or how not? 

Answer,-Yes. Whenever I use Anonymous proxies , Skype , Internet Banking

Arcot  etc. I p erform secured connection.

Question 1.5State the meaning of the following:

Answer,-

Confidentiality

Confidentiality allows authorized users to access sensitive and protected data.

It refers to the privacy and security level of personal data published via the

Internet.

Integrity

Integrity is the assurance that information can only and only be accessed or

modified by those authorized persons

Authentication

Authentication is a process that ensures and confirms a users identity.

https

Hypertext Transfer Protocol Secure  HTTPS   is a combination of the Hypertext

Transfer Protocol with the SSLTLS protocol to provide encryption and secure

identification of the server. HTTPS connections are often used for payment

transactions on the World Wide Web and for sensitive transactions in corporate

information systems.

Signature

Digital signatures are used by programs on the internet and local to the machines

to confirm identity to any third party concerned.

Question 1.6List the contents of any Digital Certificate available in your PC.

Answer,- Watchguard Certificate Details,-

Issued to, -

CN Fireware web DCA

O Watchguard

OU Fireware

Serial Number 52:08:65:c6

Issued by, -

CN- Fireware web CA

O Watchguard

OU Fireware

Begins 13− 06− 2013

Expires 11− 08− 2016

3