Firewalls

cooperation, but it cannot and it should not depend on Internet users

in general.

Given these benefits to the firewall approach, there are also a

number of disadvantages and a number of things that firewalls cannot

protect against. A firewall is not by any means a panacea for Internet

security problems.

1.6 Limitations of firewalls

Firewalls can’t protect against attacks that don’t go through the

firewall. Many corporations that connect to the Internet are very

concerned about proprietary data leaking out of the company through

that route. Unfortunately for those concerned, a magnetic tape can just

as effectively be used to export data. Many organizations ...