Configuring security Firewall
Digi TransPort® Routers User Guide
766
Firewall script process flow
If you use a firewall script, these are the basic processing rules:
n When the firewall is active, the script is processed one line at a time as each packet is received
or transmitted.
n Even when a packet matches a filter-rule, processing continues and all the other filter rules are
checked until the end of the script is reached.
n The action taken on a particular packet is that specified by the last matching rule.
n By using the [action] field's break option, you can redirect the script processing to a new
location or to the end of the script if required.
n The default action that the firewall assigns to a packet is to block a packet: if the packet does
not match any of the rules.
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