NO. 32 • january 2013 • Price Free • www.networkset.net

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Issue 32 - January /2013

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SIP

Issue 32 - January /2013

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Issue 32 - January /2013

SIP

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Media Transport

Alice SIP IP Phone

BOB SIP IP Phone

jlu j^tNrtll <_nJJ 6^9^11

Issue 32 - January /2013

General
Header

Accept-
Encoding

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Language

Contact

Record-Route

Timestamp

Entity
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Encoding

Content-
Length

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Entity Headers - 2

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Response Headers - 4

lHiLlU9jUI ^Igjl (jjs £gj J£
♦as il ... II

15

® NetworkSet

Issue 32 - January /2013

SIP

Iff>7nih9 ^yaLog l*^<" ^lc lajslLj (jl j^"j (jiJg cULLaJI tliLagl&oJLi JjoLS J^ni i cUdLi^I o^U"..!^ ^jj ajl^HJL

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200

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300

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400

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408

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409

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420

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411

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500

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502

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504

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600

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INVITE - 1
OPTIONS - 2
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ijiijjLuiJI 2JL^ jjjj Leu

Informational - 1
Success - 2
Client-Error - 3
Client-Error - 4
Server-Error - 5
Global Failure - 6

16

Issue 32 - January /2013

FORTIFY IT AND FORGET IT- FOR TIDDOS

0

Fortinet o)aJ ^ a.^.^-^

Illl I Mil

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COPYRIGHT 1985., ACTIVISION INC.

cui J^lniflll ijosu i - Firewalls

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jiaiilg jo^l (j-o TaaI9 JLLcdl Iaa (jiiolij aUaJ

(JAJI9 DOS attack 9^9 31 2Lii9^AaJI

<J>9jiLa 9JL Lq£ ji'K 1 jl^l ojQh-\ (JIajJ j9^j 0J9AJ
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: DOS attack .tj.^n^n u •

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(jjLjxjjidl (j ■ 11 <LlHj aIjU 1 rii II iZiLaA^

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djLal cLoAiia <LdLo ^jLuia d^jjliJI AjllH*9 L&jLaA^

17

SDD0S_.^L3iJI Iaaj Ju^ •

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dl IHfl I An \k"..,n l^-NQ Iq'i<"i jj| j_£ ■ n.*i<ll Jjjj

jojfcl a^I LLluxo (jVnjcVi... DDOS attack JuL^lgjaJ

Jjjjjj La gj£g ojdl^l o ajL Jojq dUaaiiluioJI ^gjJaJI

NBA «network behavior analysis» systems

ihll aLloIjIII ^jiu La J£ jl lIIjaj jl !\n joflua

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(jgl^j y Lcua^g Legal Laia^LlD aLoIjIJI JL^jl
LuIaj AUAJ9 malicious attack requests ^lr.

jx ojj's in I cLoLa oA^lg ojLujj ^jLqJI I'i

differences» ^9 Zr>w\y\ 0 Aa jio jx AjasJI
.«are in intent not in content

lsijsuS] LaJMii (jja j^o 1 ^■■■q (jJI <L^L^j j^j AUaJ

cKlitl JiLj u^LLJI ALloIjIJI jja 0 9nhll JasjoJI ^Jx
(jii di9nh jjx SaLjjj q 1 i'i II (jiflj culc sLLjg
cUgLuo aILLl ljjL^ Ijl Lo SJLi ^_Ja ALcljlJI IaiL

Jl (JJ3 AJASjl (jjX sLLl . nj.^Tllg d^lulll (_Jx |QQ^lT>l I

. d<iuill jjda Lljajxj ^111 settings

FortiDDO

illJ^Ja J nl<"n J< *i 1 <Klnlll jjLflliJ ZriA\\..tl\<

DOS & DDOS ^La^a j* iuLaAJJ FortiDDOS

,"il rk-\fc II ' I I'i j_fl ^ i X ^nnQ'i'n jjx dLlLo^, jigj Q^n

QiT>fi signatures _j djgjjLo JJLSJI9 oaja^JI

** c

Llij^jg tj) 1 "' LaS lILloIjUI (^q'iSo Aaff\ i ^/ (jjjLuj^/I

jlaij <ui La£ ,«focuses on intent not content»
l^l cul i"i 1 ^ (jJLcl^I J<"" ilu^LJI ,jJI

(jiiLog ojajuo dULaj ojio jIao ^lc dLuLj Jil LJLc

layer 2,3,4 and 7 jja J^ 1 1^4 JasaJI I la
(jgiLi i"i KLJI 5jjjLLq9 ^LlqIjjq jja oaoJI a Jul fL&Ijl
^91 ihll Ja&jaJLj cLaLa ljLiLlj oacLq j^ aq jLai^JI
Jl (JASLu Lo 9I aUj JJLLj La d<iuill aLIslqJI

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dj^l^jO (jlc dUjAO

jja ^jjIaJI DDOS

Zombies _ll Jj^II

oAA jja jl ."i 1 "n

legal packet pj-^^'i < ^gixi ^Ul oj^^l

0^ JSLH^o-" J^ii ^jlcaII (jn-Nnll jl 'i Vini LaJLi ^Ul

L^JAC ^j£> j^Jg i"l KLJI ^(j'i-NO ^ "'"'^1 A KnIO II

S^iTiill ojaq La LojIj (JAJI9 l^lj-^g Ja&j39

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Routsr access control list-

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J39-UJ ajlSLIJLj Layer 2,3,4 and 7 inspection j

memory jja jy<" aIMjlLuI ogbl jja JLqj

JjlLdj (jJLULg and processing capabilities

. network throughput

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antivirus pi ^"--i Jia pj-^^'i ja jc^ui Iaa jja
gi jjg .-.nj... jlg^ IPS gl IDS 9I software

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jja (J^ jLo oajAvj ojLajoj ■ i<j"<« ^uaLjjj jx ^jLj
joUajJI jLuLjI (Jxo I ji ■< ' jj djLiLuJI JqI^ II

vju j^tsriii v_rdj 6^9^11

18

Issue 32 - January /2013

< £Lc l j<aai\ ^ji^ layer 3 1592*110 (J Lc
Layer4 p' ^"-<i < ^jUg ii>l5u ^LomJlg packets

(ijjLoll JLLaJJ Inihg iZjjgjJI joBj sUiLal ^ ACL

TCP port 80 traffic port 80 2L£L^I HHaj

Cq'i n <-i L joiik QtT\C> ill! j IjxLog cU II Unn

Certain URLs

Hosts

Agents

Referes

Cookies

IPS 4 FortiDDOS ^ •

^ jiisu j±\ NBA system 9 I FortiDDOS
Jaslq J9^/I jqLHjqJI p-'^j (j^Jg IPS u^iLuj^II
ojdL^il (jja dirgill oA^ (jl ^Jl eUiLla^Lj iikcljill
J9^9 (jlc attack I -'"<! (jii aaxsj ^

(jUI ajujLj^I ^"-^ii jlo ^JJjJg attack signature

cLuajJLo JXC Lflul j^yL LljjX (jx cLoJoj^fl OiAA jjjQJ

9J ips SJLi ^ Lo£ attack zero-day ^9.1^]
cul ■ dJ (jiajjjj (jl ^1 ui 1 |oJ jj-u attack iJuLa
ips database ^ signatures 2

jo^ui djL^^j (jx ips _j j^LaJI 1 irMLi L jLi^l

(jJI p"*"" 9I JXLUL09 Ujc.>\f> lILjloIjj J^Li. (jja
j9jjqJL lIJjloIjIII I JuiJ ^lOni 19 ips ^ Vi 1 LlaIc flj^l

(JjLSul'l II JjJjjQ •

J ' s uil ' (AjJI aIc (j if .J j 1'1'Kjfi lULLl

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initial learning period ^mL^I ^ikfll 2LLijja1 -

\ -Jg"« II pi Ui II ,jx LliLagkci II £jq_^ dinjja ^yL

oJlii j fi'i'..i"iQ dJLfiL^ cUijAJ ^jA2J3 cul (j'^j"" " Hg

9*09 dL^y; (jjx (jmj rule £^9^
dja^a jl* t'J J jli UDP port 1434

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lILsIjUI jl J9L1 jl cU^AJLO lLLloIjjJI Jaslo

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firewall & FortiDDOS

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: {J ic iJAi j Jo'iTii 19

Specific protocols
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fortiDDOS JJlweb server ajla ,^0 «.*y>«
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,jj^9^9J9jjJ|

19

Q NetworkSet

Issue 32 - January /2013

(Land attack)

• End of packet (EOP) before 20 bytes of IPV4
Data

• Total length less than 20 bytes

• EOP comes before the length specified by
Total length

• End of Header before the data offset (while
parsing options)

• Length field in LSRR/SSRR option is other
than (3+(n*4)) where n takes value
greater than or equal to 1

• Pointer in LSRR/SSRR is other than (n*4)
where n takes value greater than or

equal to1

• For IP Options length less than 3

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must be non-zero

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packets

• Data offset is less than 5 for a TCP packet

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bytes of TCP header

• EOP before the data offset indicated data
offset

• Length field in Window scale option other
than 3 in a TCP packet

• Missing UDP payload

• Missing ICMP payload

Layer 7 header anomalies
Undefined opcode in HTTP header
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• Header length less than 5 words

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• Source or Destination address equal to
Local Host (loopback address spoofing)

• Source address is equal to Destination

20

® NetworkSet

Issue 32 - January /2013

2-TCP state anomaly

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2 LAN Interfaces (Copper/SFP), 2 WAN Interfaces (Copper/SFP) Total Network Interfaces
1X1 TB HDD Total Storage Capacity
1 Gbps Throughput

2- FortiDDOS 200A

4 LAN Interfaces (Copper/SFP), 4 WAN Interfaces (Copper/SFP) Total Network Interfaces
2TB (1TB HDD x2) Total Storage Capacity
2 Gbps Throughput

6 LAN Interfaces (Copper/SFP), 6 WAN Interfaces (Copper/SFP) Total Network Interfaces
2TB (2 x 1TB HDD) Total Storage Capacity
3 Gbps Throughput

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21

Issue 32 - January /2013

Magazine

Netw®rkSet

First Arabic Magazine for Networks

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22

Issue 32 - January /2013

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ay indicate an attempt to fool you or intercept any data you send to the

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23

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24

Issue 32 - January /2013

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25

® NetworkSet

Issue 32 - January /2013

WIRELESS CUSTOMER
QUESTIONNAIRE

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26

Q NetworkSet

Issue 32 - January /2013

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27

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