Firewall - Basic Networks Concepts May-2011 .Ayman Boghdady...

Info iconThis preview shows pages 1–5. Sign up to view the full content.

View Full Document Right Arrow Icon
Basic Networks Concepts May-2011 .Ayman Boghdady Page 1
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
What is a Firewall? A firewall is a hardware, software or a combination of both that monitors and filters traffic packets that attempt to either enter or leave the protected private network. Firewall can be uni-directional or bi-directional Firewall can be a single machine or a group of machines performing the firewall functions collaboratively Network Firewall Protects entire network Personal Firewall Protects a single machine Zone Alarm, various anti-virus software .Ayman Boghdady Page 2
Background image of page 2
Firewall can be a single machine or a group of machines performing the firewall functions collaboratively. Hardware Firewall - Software Firewall Software Firewall Firewall Policy Design Two major types of policy: Permit all services unless specifically denied Deny all services unless specifically permitted The first policy is less secure & allows dangerous services not denied by the firewall .Ayman Boghdady Page 3
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
The second is stronger and more secure, but has higher probability of impacting users Administrator should find the proper mixture that allows maximum security with minimum user interference The security continuum Ease of use vs. degree of security
Background image of page 4
Image of page 5
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 10

Firewall - Basic Networks Concepts May-2011 .Ayman Boghdady...

This preview shows document pages 1 - 5. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online