Which of the following is NOT a limitation of firewalls?

Question $1$ options:

The firewall may not protect fully against internal threats, such as a disgruntled employee or an employee who unwittingly cooperates with an external attacker.

A laptop, PDA, or portable storage device may be used and infected outside the corporate network, then attached and used internally.

The firewall cannot protect against attacks that bypass the firewall.

A properly secured wireless LAN may be accessed from outside the organization.