E securty

May 15, 2016Download as pptx, pdf0 likes265 views

The document discusses e-security and covers several topics including network system structure, types of attacks, cryptography, and malware. It describes the OSI model layers, common attacks like passive attacks and buffer overflows. It also explains cryptography concepts such as encryption algorithms, digital signatures, and how cryptography provides confidentiality, integrity, authentication and non-repudiation. Different types of malware are defined like exploits, worms, rootkits, trojans, adware and spyware along with examples.

?Structure of Network System
?Threats and Type of Attacks
?Cryptography
?Analysis of e-security

OSI
(OPEN SYSTEMS INTERCONNECTION)
LAYERS

Physical
Media,Signal and Binary Transmission
Data Link
Mac and LLC (Phyiscal addressing)
Network
Path Determination and TCP/IP (Logical
addressing)
Transport
End to End Connections and Reliability
Session
Interhost Communication
Presentation
Data Representation
and Encryption
Application
Network Process to Application

?Passive Attack
?Active Attack
?Insider Attack
?Close-in Attack
?Phishing Attack
?Buffer overflow
?Exploit attack
?Password attack

USER PCs
HACKER
UNWITTING
HOST
“ZOMBIE”
OTHER
NETWORK
COMPUTERS
VICTIM’S
SERVER
ACTIVE ATTACK (EXAMPLE: DOS ATTACK)

CLOSE – IN – ATTACK (EXAMPLE :SOCIAL ENGINEERING ATTACK)

WHAT PROVIDES CRYPTOGRAPHY?
?Confidentiality
?Message Integrity
?Authentication
?Non-repudiation

Known Symmetrical Algorithms
?Data Encryption Standard (DES)
?56 bit key
?Triple DES, DESX, GDES, RDES
?168 bit key
?RC2, RC4, RC5
?variable length up to 2048 bits
?IDEA - basis of PGP
?128 bit key
?Blowfish
?variable length up to 448 bits

CRYPTOGRAPHIC SERVICES ALLOW
?Digital Signatures
?Certificates (Digital Ids)
?Secure Channels

TYPES OF MALWARE
root@root:~# Exploit
root@root:~# WORM
root@root:~# Rootkit
root@root:~# Trojan
root@root:~# Adware
root@root:~# Spyware

EXPLO?T
exp@root:~# Vulnerability
exp@root :~# System
exp@root :~# Unauthorized
exp@root :~# Spread Out Spam
exp@root :~# Java,Html,Js

WORM
wrm@root:~# Auto Clone
wrm@root :~# Spread
wrm@root :~# Not need attach
wrm@root :~# Consume
wrm@root :~# Any action user
wrm@root :~# Backdoor P2P

WORM
#STORM
wrm@root :~# 2007
wrm@root :~# attach mail
wrm@root :~# wincom32.exe
wrm@root :~# services.exe
wrm@root :~# P2P
#CONF?CKER
wrm@root :~# 2008
wrm@root :~# Windows
wrm@root :~# Buffer
wrm@root :~# 9 billion
wrm@root :~# Services
#CODERED
wrm@root :~# Servers
wrm@root :~# 2001
wrm@root :~# IIS
wrm@root :~# 359,000
wrm@root :~# Whitehouse

ROOTK?T
root@root:~# System -Hide
root@root:~# Response
root@root:~# Not -alone
root@root:~# Remote
root@root:~# Crack -Keygen
root@root:~# Use you -Pri

ROOTK?T
#SONY CD
root@root:~# 2005
root@root:~# copy -protect
root@root:~# Access
root@root:~# ‘$sys$’
root@root:~# Lawsuit
#Greek Wiretapping
root@root:~# 2004
root@root:~# Govern tapping
root@root:~# Ericsson
root@root:~# Tel Central
root@root:~# deActive log

SPAM
wrm@root:~# junk email
wrm@root :~# Phishing
wrm@root :~# script or.exe
wrm@root :~# Botnets
wrm@root :~# Collect
wrm@root :~# Pharmacy %81

TROJAN
trj@root:~# Backdoor-exploit-rk
trj@root :~# left data
trj@root :~# Unauthorized
trj@root :~# carries out

ADWARE
adw@root :~# Freeware
adw@root :~# keylogger
adw@root :~# Pop -up
adw@root :~# Tracks
adw@root :~# Related
adw@root :~# Consume

SPYWARE
spy@root :~# system monitors,
trojans, adware, and tracking
cookies
spy@root :~# not knowledge
spy@root :~# not spread-itself
spy@root :~# ie ,Windows
spy@root :~# usage -commercial
spy@root :~# identity theft

SPYWARE
spy@root :~# -CoolWebSearch
spy@root :~# -huntbar
spy@root :~# -movieland
spy@root :~# -kazaa

?THREAT INTELLIGENCE
?SECURITY CAPABILITIES
?GEOPOLITICAL AND
INDUSTRY
?USER AND CORPORATE

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GiacomoVacca - WebRTC - troubleshooting media negotiation.pdfGiacomo Vacca

Presented at Kamailio World 2025. Establishing WebRTC sessions reliably and quickly, and maintaining good media quality throughout a session, are ongoing challenges for service providers. This presentation dives into the details of session negotiation and media setup, with a focus on troubleshooting techniques and diagnostic tools. Special attention will be given to scenarios involving FreeSWITCH as the media server and Kamailio as the signalling proxy, highlighting common pitfalls and practical solutions drawn from real-world deployments.

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学生卡英国搁颁础毕业证皇家艺术学院电子毕业证学历证书Taqyea

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美国文凭明尼苏达大学莫里斯分校毕业证范本鲍惭惭学位证书Taqyea

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E securty

1. e-security Y?ld?r?m TAM

2. WHAT WILL WE SEE IN THIS LECTURE

3. ?Structure of Network System ?Threats and Type of Attacks ?Cryptography ?Analysis of e-security

5. OSI (OPEN SYSTEMS INTERCONNECTION) LAYERS

6. Physical Media,Signal and Binary Transmission Data Link Mac and LLC (Phyiscal addressing) Network Path Determination and TCP/IP (Logical addressing) Transport End to End Connections and Reliability Session Interhost Communication Presentation Data Representation and Encryption Application Network Process to Application

8. TCP VS UDP

10. FINALLY PROCESS

11. FIREWALL

13. FIREWALL - HARDWARE

14. FIREWALL - SOFTWARE

15. TYPE OF ATTACKS

16. ?Passive Attack ?Active Attack ?Insider Attack ?Close-in Attack ?Phishing Attack ?Buffer overflow ?Exploit attack ?Password attack

17. PASSIVE ATTACK

18. USER PCs HACKER UNWITTING HOST “ZOMBIE” OTHER NETWORK COMPUTERS VICTIM’S SERVER ACTIVE ATTACK (EXAMPLE: DOS ATTACK)

19. INSIDER ATTACK

20. CLOSE – IN – ATTACK (EXAMPLE :SOCIAL ENGINEERING ATTACK)

21. PHISHING ATTACK

22. BUFFER ATTACK

23. EXPLOID ATTACK

24. PASSWORD ATTACK (EXAMPLE:SQL INJECTION)

25. CRYPTOLOGY

26. WHAT IS THE CRYPTOLOGY?

27. ?Cryptography ?Cryptanalysis

28. HISTORY OF CRYPTOLOGY

29. ENIGMA

30. BASIC ELEMENTS OF CRYPTOGRAPHY

31. WHAT PROVIDES CRYPTOGRAPHY? ?Confidentiality ?Message Integrity ?Authentication ?Non-repudiation

32. ALGORITHM OF CRYPTOLOGY

33. Known Symmetrical Algorithms ?Data Encryption Standard (DES) ?56 bit key ?Triple DES, DESX, GDES, RDES ?168 bit key ?RC2, RC4, RC5 ?variable length up to 2048 bits ?IDEA - basis of PGP ?128 bit key ?Blowfish ?variable length up to 448 bits

34. CRYPTOGRAPHIC SERVICES ALLOW ?Digital Signatures ?Certificates (Digital Ids) ?Secure Channels

35. DIGITAL SIGNATURES

36. SECURE SOCKETS LAYER

37. TYPES OF MALWARE root@root:~# Exploit root@root:~# WORM root@root:~# Rootkit root@root:~# Trojan root@root:~# Adware root@root:~# Spyware

38. EXPLO?T exp@root:~# Vulnerability exp@root :~# System exp@root :~# Unauthorized exp@root :~# Spread Out Spam exp@root :~# Java,Html,Js

39. EXPLO?T

40. WORM wrm@root:~# Auto Clone wrm@root :~# Spread wrm@root :~# Not need attach wrm@root :~# Consume wrm@root :~# Any action user wrm@root :~# Backdoor P2P

41. WORM

42. WORM #STORM wrm@root :~# 2007 wrm@root :~# attach mail wrm@root :~# wincom32.exe wrm@root :~# services.exe wrm@root :~# P2P #CONF?CKER wrm@root :~# 2008 wrm@root :~# Windows wrm@root :~# Buffer wrm@root :~# 9 billion wrm@root :~# Services #CODERED wrm@root :~# Servers wrm@root :~# 2001 wrm@root :~# IIS wrm@root :~# 359,000 wrm@root :~# Whitehouse

43. ROOTK?T root@root:~# System -Hide root@root:~# Response root@root:~# Not -alone root@root:~# Remote root@root:~# Crack -Keygen root@root:~# Use you -Pri

44. ROOTK?T #SONY CD root@root:~# 2005 root@root:~# copy -protect root@root:~# Access root@root:~# ‘$sys$’ root@root:~# Lawsuit #Greek Wiretapping root@root:~# 2004 root@root:~# Govern tapping root@root:~# Ericsson root@root:~# Tel Central root@root:~# deActive log

45. SPAM wrm@root:~# junk email wrm@root :~# Phishing wrm@root :~# script or.exe wrm@root :~# Botnets wrm@root :~# Collect wrm@root :~# Pharmacy %81

46. TROJAN trj@root:~# Backdoor-exploit-rk trj@root :~# left data trj@root :~# Unauthorized trj@root :~# carries out

47. ADWARE adw@root :~# Freeware adw@root :~# keylogger adw@root :~# Pop -up adw@root :~# Tracks adw@root :~# Related adw@root :~# Consume

48. SPYWARE spy@root :~# system monitors, trojans, adware, and tracking cookies spy@root :~# not knowledge spy@root :~# not spread-itself spy@root :~# ie ,Windows spy@root :~# usage -commercial spy@root :~# identity theft

49. SPYWARE spy@root :~# -CoolWebSearch spy@root :~# -huntbar spy@root :~# -movieland spy@root :~# -kazaa

51. ?THREAT INTELLIGENCE ?SECURITY CAPABILITIES ?GEOPOLITICAL AND INDUSTRY ?USER AND CORPORATE

狠狠撸

E securty

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