User manual

Chapter 4. The Firewall Menu

• Outbound LAN Traffic Options, page 40

• Outbound DMZ Traffic Options, page 42

• Inbound Traffic Options, page 44

• VPN Options, page 46

• VPN Users, page 51

• Web Content Filtering, page 52

• Anti-Virus, page 61

• IDP Options, page 64

• Schedules, page 67

The options in the Firewall menu allow the administrator to control and manage the features of the

DFL-160 that are specific to a firewall. A firewall, as the name suggests, is a capability that

provides a protective barrier against a range of potential threats that can be transported by the public

Internet towards sensitive internal networks.

Using the DFL-160 as a Firewall

The firewalling capabilities of NetDefendOS allow the administrator to impose various security

restrictions on the traffic flowing through the interfaces of the DFL-160. In summary, the

firewalling options are:

• The types of traffic that are allowed to flow between interfaces can be specified and also in what

direction they are allowed to flow.

• Secure VPN connections can be specified for traffic flowing through interfaces.

• Policies can be set for the URLs to which web surfing is allowed.

• Anti-Virus scanning can be enabled for file downloads.

• Intrusion Detection and Prevention (IDP) can be enabled to search streams of traffic for threats