Web Manager “Network” Menu Options > Configuring Firewall Rules for OnBoard Packet Filtering

Configuring Firewall Rules for OnBoard Packet Filtering
When an administrative user clicks the “Firewall” option under “Network,” a screen appears like the one shown in the following figure. The administrative user can use this screen to configure packet filtering as described in this section. See Firewall/Packet Filtering on the OnBoard for background information, if needed.
Network Æ Firewall Screen
The Network Æ Firewall screen provides an interface to iptables. Using this screen, the administrative user can define rules for the built-in chains. Once rules have been administratively-defined, they can be edited or deleted.
Network Æ Firewall Screen shows the six built-in chains. The rules for the built-in chains are hidden. The top three chains are defined in the iptables “filter” table and the bottom three chains are defined in the iptables “nat” table. Also as shown, an “Add new table_name chain_name rule” button appears under the entry for each chain, for example, “Add new NAT prerouting rule.”
Administrative users may want to add rules to the default chains to suit their environment and their needs. The example in Network Æ Firewall Screen shows an example of an administratively-defined rule for the filter table INPUT chain. The number 0 is assigned automatically. As shown, an “Edit” and “Delete” button appear next to the entry for each administrator-defined rule.
The administrative user can use the “Edit,” “Delete,” and “Add new table_name chainname rule” buttons on the form to do the following:

Web Manager “Network” Menu Options > Configuring Firewall Rules for OnBoard Packet Filtering