the firewalls

the firewalls

1. resistant to attacks

2. 1988

   • DEC

3. access control policy

4. Stateful firewalls

   • AT&T
     • 1989

5. Benefits and Limitations

   • Network performance can slow down
     • Unauthorized traffic can be tunneled

6. Reduce security management complexity

   • Prevent the exposure of sensitive hosts
     • Block malicious data from servers and clients.

7. Types

   • Application gateway firewall (proxy firewall)
     • 3, 4, 5, 7
   • Stateful firewall
     • 3,4 and 5
   • Packet filtering firewall
     • 3 and 4

8. Classic Firewall

   • (CBAC)

Images and files in the map