cysec-a1
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Cyber security q and aTRANSCRIPT
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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
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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
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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
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