Firewalls

organization-approved firewalls. To eliminate a major vulnerability,

all connections and accounts related to external network connections

should be periodically reviewed and deleted as soon as they are no

longer required.

Tip:

2.8 Virtual private networks

Virtual private networks (VPNs) allow a trusted network to com-

municate with another trusted network over untrusted networks

such as the Internet. Because some firewalls provide VPN capability,

it is necessary to define policy for establishing VPNs. Firewall-based

VPNs can be established in a number of configurations.

Tip:

2.9 Firewall administration

A firewall, like any other network device, has to be ...