E-Commerce
Security and Privacy, Continued
Docsity.com
Prepare for your exams
Study with the several resources on Docsity
Earn points to download
Earn points by helping other students or get them with a premium plan
Guidelines and tips
Prepare for your exams
Study with the several resources on Docsity
Earn points to download
Earn points by helping other students or get them with a premium plan
Understanding E-Commerce Security: Firewalls, Filtering, Proxy Servers, Check Point, Slides of Fundamentals of E-Commerce
An in-depth exploration of various security measures used in e-commerce, with a focus on firewalls, packet filtering, proxy servers, and check point. Learn about the functions of firewalls as a barrier between internal networks and the internet, the role of packet filtering at the ip layer, the application layer-specific operations of proxy servers, and the significance of check point as a leading internet security company.
Typology: Slides
2012/2013
1 / 16
This page cannot be seen from the preview
Don't miss anything!
Related documents
Partial preview of the text
Download Understanding E-Commerce Security: Firewalls, Filtering, Proxy Servers, Check Point and more Slides Fundamentals of E-Commerce in PDF only on Docsity!
E-Commerce
Security and Privacy, Continued
FIREWALL
Internet”A barrier between an internal network & “the
Protects the internal network from outside attacks
Executes administrator-defined security policy
through or notDecides whether a datastream is allowed to pass
- proxy- packet filterMain Components:
PACKET FILTER
Works at IP layer
Rule-table-driven
Forwards, refuses, or drops a packet according to the rules
An example rule table
Drop
21
Any
61...*
3
Refuse
23
130...*
61...*
2
Fwd
Any
130...*
128...*
1
Action
…
Port
Destination
Source
Rule#
PROXY
- One proxy per (application layer) protocol• Works at application layer
- HTTP proxy, FTP proxy, …
- Can be made transparent to users• Different users can have different privileges• User authentication required
CHECKPOINT
- Full Name: Check Point
(^) TM
Software^
Technologies Limited
- Business Area: Internet Security• Revenues in 2000: $425.3 million• Stock Price: $146.5 (Jan 22, 2001)• Employees: 1000 +
MAIN PRODUCTS
FireWall-
(^) a popular firewall product
Open Platform For Security (OPSEC):
(^) an
policies extending FireWall-1enterprise-wide framework for security
VPN-1:
(^) a family of
(^) virtual private
networking solutions
Provider-1™:
(^) a security management
solution
STOCK PRICE CHART
$100 $150 Price $
97
98
99
00
01
Yea
ocsity.co
REVENUES CHART
$ 1 0 0 M$ 2 0 0 M $ 4 0 0 MR e v en u es
9 5
9 6
9 7
9 8
9 9
0 0
Y e a r
$ 3 0 0 M
Symmetric Key Crypto
D(E(x, k), k) = x
(decryption, encryption, plaintext, key)
- Alice and Bob choose k
AB
- Alice: y < -- E(x, k
AB )
(ciphertext)
- Alice -->
Bob: y
- Bob: x < -- D(y, k
AB )
(Eve does not know k
AB )
Well Studied and Commercially Available
- AES– RC5– FEAL-n– IDEA– DES
- Users must deal with
- Key management– Government (especially export)
Digital Signatures
Trickier than the paper “analogue” Doc 1
-JF
Doc 2
-JF
Doc n
-JF