Netgear FVS318 FVS318v3 Reference Manual - Page 18

A Powerful, True Firewall with Content Filtering, Security, Port Forwarding with NAT - fvs318v3 port forwarding

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Reference Manual for the ProSafe VPN Firewall FVS318v3 A Powerful, True Firewall with Content Filtering Unlike simple Internet sharing NAT firewalls, the FVS318v3 is a true firewall, using stateful packet inspection to defend against hacker attacks. Its firewall features include: • DoS protection. Automatically detects and thwarts DoS attacks such as Ping of Death, SYN Flood, LAND Attack, and IP Spoofing. • Blocks unwanted traffic from the Internet to your LAN. • Blocks access from your LAN to Internet locations or services that you specify as off-limits. • Logs security incidents. The FVS318v3 logs security events such as blocked incoming traffic, port scans, attacks, and administrator logins. You can configure the firewall to email the log to you at specified intervals. You can also configure the firewall to send immediate alert messages to your e-mail address or email pager whenever a significant event occurs. • With its content filtering feature, the FVS318v3 prevents objectionable content from reaching your PCs. The firewall allows you to control access to Internet content by screening for keywords within Web addresses. You can configure the firewall to log and report attempts to access objectionable Internet sites. Security The FVS318v3 VPN Firewall is equipped with several features designed to maintain security, as described in this section. • PCs Hidden by NAT NAT opens a temporary path to the Internet for requests originating from the local network. Requests originating from outside the LAN are discarded, preventing users outside the LAN from finding and directly accessing the PCs on the LAN. • Port Forwarding with NAT Although NAT prevents Internet locations from directly accessing the PCs on the LAN, the firewall allows you to direct incoming traffic to specific PCs based on the service port number of the incoming request, or to one designated "DNS" host computer. You can specify forwarding of single ports or ranges of ports. 2-2 Introduction January 2005

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Reference Manual for the ProSafe VPN Firewall FVS318v3
2-2
Introduction
January 2005
A Powerful, True Firewall with Content Filtering
Unlike simple Internet sharing NAT firewalls, the FVS318v3 is a true firewall, using stateful
packet inspection to defend against hacker attacks. Its firewall features include:
DoS protection.
Automatically detects and thwarts DoS attacks such as Ping of Death, SYN Flood, LAND
Attack, and IP Spoofing.
Blocks unwanted traffic from the Internet to your LAN.
Blocks access from your LAN to Internet locations or services that you specify as off-limits.
Logs security incidents.
The FVS318v3 logs security events such as blocked incoming traffic, port scans, attacks, and
administrator logins. You can configure the firewall to email the log to you at specified
intervals. You can also configure the firewall to send immediate alert messages to your e-mail
address or email pager whenever a significant event occurs.
With its content filtering feature, the FVS318v3 prevents objectionable content from reaching
your PCs. The firewall allows you to control access to Internet content by screening for
keywords within Web addresses. You can configure the firewall to log and report attempts to
access objectionable Internet sites.
Security
The FVS318v3 VPN Firewall is equipped with several features designed to maintain security, as
described in this section.
PCs Hidden by NAT
NAT opens a temporary path to the Internet for requests originating from the local network.
Requests originating from outside the LAN are discarded, preventing users outside the LAN
from finding and directly accessing the PCs on the LAN.
Port Forwarding with NAT
Although NAT prevents Internet locations from directly accessing the PCs on the LAN, the
firewall allows you to direct incoming traffic to specific PCs based on the service port number
of the incoming request, or to one designated “DNS” host computer. You can specify
forwarding of single ports or ranges of ports.