ZyXEL ARMOR G1 User Guide - Page 125
Security, NBG6818 User's Guide, Settings > Firewall > IPv4 Firewall
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Chapter 12 Security Figure 73 Settings > Firewall > IPv4 Firewall The following table describes the labels in this screen. Table 42 Settings > Firewall > IPv4 Firewall LABEL DESCRIPTION ICMP Internet Control Message Protocol is a message control and error-reporting protocol between a host server and a gateway to the Internet. ICMP uses Internet Protocol (IP) datagrams, but the messages are processed by the TCP/IP software and directly apparent to the application user. Respond to Ping on The NBG6818 will not respond to any incoming Ping requests when None is selected. Select LAN to reply to incoming LAN Ping requests. Select WAN to reply to incoming WAN Ping requests. Otherwise select LAN&WAN to reply to all incoming LAN and WAN Ping requests. Firewall Setup Enable Firewall Select Enable to activate the firewall. The NBG6818 performs access control and protects against Denial of Service (DoS) attacks when the firewall is activated. Enable Firewall Rule Filter Rule Select Enable to activate the firewall rules that you define (see Add Firewall Rule below). Actions Select Drop to silently discard the packets which meet the firewall rules. The others are accepted. Firewall Rule No. Service Name MAC address Select Accept to allow the passage of the packets which meet the firewall rules. The others are blocked. This is your firewall rule number. The ordering of your rules is important as rules are applied in turn. This is a name that identifies or describes the firewall rule. This is the MAC address of the computer for which the firewall rule applies. NBG6818 User's Guide 125
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