Network Security Issues - ECE

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Nov 20, 2013 (3 years and 7 months ago)

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200814012 Ayşe Gül ÇALIŞKAN


200814032 Erhan IŞIK

ECE 491 Interm Presentation 09.12.2012

1


Supervisors : Halil T. EYYUBOĞLU


Fahrettin

DOĞAN(Türk Telekom)


Gökhan BERK(Türk Telekom)

OUTLINE



Introduction



Why network security is needed?


DoS (Denial of Service)


DDoS (Distributed Denial of Service)


About Company


Future Work


References

ECE 491 Interm Presentation 09.12.2012

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INTRODUCTION




Investigation of network security issues




I
mplementation of network security issues


ECE 491 Interm Presentation 09.12.2012

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Why network security is needed?


According

to

a

research

done

by

Computer

Security

Institute

since

1996
,

it

was

seen

that

information

processing

systems

are

at

great

risk
.



ECE 491 Interm Presentation 09.12.2012

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In
1998
,

64
% of companies
and

institutions

which
joined this research
stated that
they

f
aced
information
processing weakness.


In
2000
,

this
rate
rised
to 70
%.


DDoS attacks have increased by 2000%
in the past three years.


ECE 491 Interm Presentation 09.12.2012

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Denial of Service


(DoS)

(Single Attack)



The simplest type of attack.


Attack is done
via

a single IP.


It is e
asy to prevent DoS attacks.

ECE 491 Interm Presentation 09.12.2012

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How to prevent DoS attack?

ECE 491 Interm Presentation 09.12.2012

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FIREWALL
NETWORK SYSTEM
ATTACKED
(DoS Attack)
INTERNET
212.45.64.226
212.45.64.226
FIREWALL
NETWORK SYSTEM
ECE 491 Interm Presentation 09.12.2012

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INTERNET
(User)
(User)
212.45.64.224
212.45.64.224
Distributed Denial of Service

(DDoS)

(Multiple Attack)


It is a type of

attack which makes a machine or
network resources unavailable .


It is done by excess demand.


It is not a kind of hacking.


DDoS is most commonly faced attack in big internet
service providers such as Türk Telekom.




ECE 491 Interm Presentation 09.12.2012

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ECE 491 Interm Presentation 09.12.2012

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INTERNET
NETWORK SYSTEM
ATTACKED
(User)
(User)
(User)
(User)
(DoS Attack)
(DoS Attack)
(DoS Attack)
(DoS Attack)
(DoS Attack)
(DoS Attack)
212.45.64.226
212.45.64.226
212.45.64.224
212.45.64.224
212.45.64.225
212.45.64.225
212.45.64.223
212.45.64.223
212.45.64.222
212.45.64.222
How to prevent DDoS attack?


Firewall can not prevent DDoS.



The easiest, although a costly way to prevent DDoS, is
to buy more bandwidth.


ECE 491 Interm Presentation 09.12.2012

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How Türk Telekom prevents DDoS
attacks?


The service of cleaning the traffic to minimize the
damage that customer suffers in case of a
DDoS

(Distributed Denial of Service) attack and routing a
cleaned traffic again to the customer location, by
monitoring the customer traffic constantly, is called
DDoS

Attack Interception.


ECE 491 Interm Presentation 09.12.2012

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How Çankaya University prevents
DoS attacks?


Çankaya University used to prevent DoS attacks by
firewall.



The information given

by Rıdvan Kılıç (Specialist
in Computer Center)

06.12.2012

ECE 491 Interm Presentation 09.12.2012

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About Company



Türk Telekom has
been pr
oviding
communication
media to its customers.



Builder of


-

GSM,


-

Cable TV,


-

Internet
.



ECE 491 Interm Presentation 09.12.2012

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STUDIES IN FUTURE


We are going to search for types of DDoS attacks such
as SYN Flood,UDP Flood,HTTP
Flood,DNS

Flood
.


We are going to compare Çankaya University and Türk
Telekom in terms of precautions that they take to
prevent from
the
attacks
.


ECE 491 Interm Presentation 09.12.2012

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REFERENCES


Shaffer,Steven L. & Simon, Alan R. (1994). Network
Security.


Önal, Huzeyfe (2010). Siber Saldırı Aracı Olarak DDoS.


http://www.redbilisim.com/sayfa.aspx?id=40


www.bga.com.tr


About Company


http://www.turktelekom.com.tr



ECE 491 Interm Presentation 09.12.2012

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ECE 491 Interm Presentation 09.12.2012

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