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5
5. IPv4 Firewall Protection
This chapter describes how to use the IPv4 firewall features of the wireless VPN firewall to
protect your network. This chapter contains the following sections:
• About IPv4 Firewall Protection
• Rules to Block or Allow Specific Kinds of Traffic
• Configure Other Firewall Features
• Services, Bandwidth Profiles, and QoS Profiles
• Configure Content Filtering
• Set a Schedule to Block or Allow Specific Traffic
• Enable Source MAC Filtering
• Set Up IP/MAC Bindings
• Configure Port Triggering
• Configure Universal Plug and Play
About IPv4 Firewall Protection
A firewall protects one network (the trusted network, such as your LAN) from another (the
untrusted network, such as the Internet), while allowing communication between the two.
You can further segment keyword blocking to certain known groups. For information about
how to set up LAN groups, see Manage IPv4 Groups and Hosts (IPv4 LAN Groups) on
page 59.
Note: In this release, the wireless VPN firewall supports firewall security
for IPv4 traffic only; IPv6 addresses are ignored by the firewall. By
themselves IPv6 addresses provide a much higher level of security
than IPv4 addresses, and future releases will support IPv6 firewall
features.
A firewall incorporates the functions of a Network Address Translation (NAT) router, protects
the trusted network from hacker intrusions or attacks, and controls the types of traffic that