Firewalls and packet filters

A brief study of Firewalls and packet filters

1. FIREWALLS AND PACKET FILTERS Prepared By: Mohit Agarwal(161080107026) Juveria Maniar(161080107025)

2. CONTENTS

3. INTRODUCTION

4. FIREWALL

5. HOW DOES FIREWALL WORK ?

6. ADVANTAGES

7. DISADVANTAGES

8. TYPES OF FIREWALL

9. FIREWALL RULES

10. PACKET FILTERS

11. Advantages Low cost Low resource usage which in turn gives better performance Does not require user knowledge or co-operation Disadvantages Testing and debugging are difficult Implementing rules is difficult Network topology is not hidden from attacker

12. TYPES OF PACKET FILTERS