General Concerns on WWW Security - PowerPoint PPT Presentation

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General Concerns on WWW Security

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c. Encryption using public key cryptography. Client side Security ... 3. Use a unique password of reach system. 4. Don't write down password ... – PowerPoint PPT presentation

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Title: General Concerns on WWW Security


1
General Concerns on WWW Security
  • Name Huaying Chen
  • ID 104714
  • Instructor Dr Mort Anvari

2
What security risks?
  • Bugs or misconfiguration problems in the Web
    servers
  • Browser-side risks
  • Network eavesdropping

3
Problems with specific servers
  • 1. Windows NT servers
  • 2. Unix server Netscape servers
  • 3. Macintosh server WebStar

4
Are there secure OS Web servers?
  • NO
  • Some OS are more secure to use as platforms for
    Web than others
  • Some Web server software programs are more secure
    than others
  • Conclusion More extensibility, less security

5
Running a Secure server
  • 1. Build firewalls
  • place the Server INSIDE the firewall
  • place the Server OUTSIDE the firewall
  • -----use the Server as the sacrificial lamb to
    protect the entire inner network

6
Server INSIDE the firewall
  • other hosts
  • Server FIREWALL OUTSIDE
  • other hosts

7
Server OUTSIDE the firewall
  • other hosts
  • other hosts firewall server OUTSIDE
  • other hosts

8
Server side Security
  • Enforce access restrictions
  • a. By IP address or domain name
  • b. By user name password
  • c. Encryption using public key cryptography

9
Client side Security
  • a. Clear cache of your browser after visiting
    secure sites
  • b. Improving password
  • c. Make backup copies of important files

10
Password confidentiality
  • 1. Combine characters with numbers
  • 2. Change password regularly
  • 3. Use a unique password of reach system
  • 4. Dont write down password
  • 5. Dont store password on the computer

11
Summary
  • No computer OS is completely secure. As a result,
    the joint effort of the Web servers and the
    clients are required to make the system
    increasingly difficult to be compromised.
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