Introducing The Dfl-500; Firewall; Network Address Translation (Nat) - D-Link DFL-500 User Manual

Introducing the DFL-500

The DFL-500 is one of a series of new generation all-layer security products that provide comprehensive
protection for your internal network. These products, Application Security Gateways, combine key security
technologies into a dedicated platform designed for high performance and reliability. In a compact, easy to
install and configure package the DFL-500 combines:
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A fully-configurable firewall
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Hacker attack prevention and protection
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Virtual private networking (VPN)
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Virus protection
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Content filtering
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Easy and secure configuration management
Easily installed using the web-based manager firewall setup wizard, the DFL-500 is up and running in minutes,
providing comprehensive protection and content control for your small office/home office (SOHO) network.

Firewall

The core function of the DFL-500 is a state-of-the-art firewall that protects computer networks from the hostile
environment of the Internet. The firewall provides control of security policies through a carefully designed
interface that is easy to use but allows full control even in complex situations.
DFL-500 security policies include a complete range of options that:
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Control incoming and outgoing traffic
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Block or allow access for all policy options
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Control when individual policies are in effect
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Accept or deny traffic to and from individual addresses
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Control standard and user definable network services individually or in groups
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Require users to enter passwords before gaining access to the Internet
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Include traffic shaping to set priority and guarantee or limit bandwidth for each policy

Network Address Translation (NAT)

In NAT mode, the DFL-500 is installed as a privacy barrier between the private network and the Internet. The
firewall provides network address translation to protect the private network. In NAT mode, you can add a
Internal network to provide public access to Internet servers while protecting them behind the firewall on a
separate internal network.
Features supported in NAT mode include:
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Firewall protection, allow/deny traffic according to source/destination address, service, time of day, etc.
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VPN, virus protection, and Web content filtering
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IP/MAC binding
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DHCP configuration of the DFL-500 external network address
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Detailed logging features
DFL-500 User's Manual
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