1. Assignment:
DDoS
Lecturer:
Ou
Phannarith
!កុមទី ៤
ជុនសុខជ'
()ព វសន'
-៉)ត ចិ2)'
3ឿង សុភព'
អង ស9:)ត'

2. ករវយលុកDDoSមន*+ើន-+បដូចជ3
-­‐Internet
Control
Message
Protocol
(ICMP)
flood
-­‐(S)SYN
flood
-­‐Teardrop
a:acks
-­‐Peer-­‐to-­‐peer
a:acks
-­‐Asymmetry
of
resource
uAlizaAon
in
starvaAon
a:acks
-­‐Permanent
denial-­‐of-­‐service
a:acks
-­‐ApplicaAon-­‐level
floods
-­‐Nuke
-­‐HTTP
POST
DDOS
a:ack
-­‐R-­‐U-­‐Dead-­‐Yet?
(RUDY)
-­‐Slow
Read
a:ack
-­‐Distributed
a:ack
.........................................................

3. oeហoeយ,រ.យលុកែដលេបញនិយមបំផុត:;ះគឺ៖
denial-­‐of-­‐service
(DoS)
ឬក៏
distributed
denial-­‐of-­‐service
(DDoS)
.B,រoeធDoeឱFUser
មិនGច
Iញយក
network
resource
ឬមិនGចIក់ទងBមួយServerMនឬoeធDoeឱFNetworkNំងមិនGច
ដំoeណoeរ,រMនែតមPង។

4. វ"្ើរ(Request) Resourceជ'(ើនដងក្-ង.(លកំណត់ណមួយក្-ង8លបំណង:្ើឱ(=Networkគំង
ជប?@(ះអសន្(Unavailable) D(លបណ@(លឱ(=Userមិនអច
ទញResourceពីserverឬNetworkបន។N

5. ករវយលុកQ(បDDosR(ះអចS(តិបត្ិករUយមនុស(V ពីនក់ ឬ'(ើនជងR(ះ ឬក៏Uយ
Bots (កុំព(=Yទ័រ(V(ងD(ល](^វបនមនុស(Vមa(ក់b(ប់b(ង Computer Zombie)។

6. ភគ'(ើនe(f(ើDDosgើម(hីវយលុកWebsiteណមួយក្-ងបំណង:្ើឱ(=អជីវកម្k(ុមហ៊ុន
ណមួយមនបno(។

7. a
new
generaAon
of
DDoS
a:acks

8. ករករពរNetworkពីDos Attack&
Cisco
Protec>on
in
an
ISP
Environment.
Traffic
Des>ned
for
Targeted
Device
Is
Diverted
to
Cisco
Guard
XTs;
Clean
Traffic
Is
Returned
to
the
System.

9. Cisco
Protec>on
in
an
Enterprise
Environment.
Only
Traffic
Des>ned
for
the
Targeted
Device
Is
Diverted
to
the
Cisco
Guard
XT,
Which
Returns
"Clean"
Transac>ons
Back
to
the
System.

10. Defense.Net
DDoS
Frontline
h:p://www.defense.net/ddos-­‐protecAon-­‐service-­‐frontline.html

11. សូមអគុណ3