Additional interfaces |
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Additional interfaces are virtual interfaces that are not existing all the time (e.g. dial in connections). In order to create firewall rules also for these interfaces you must predefine them here. Additional interfaces can be used as incoming or outgoing interface at the rule definition form.
A dial in connection (point-to-point) gets the interface name ppp with the current number attached (first connection: "ppp0", second connection "ppp1", ...). It is possible to create more than one point-to-point connections. In order to create firewall rules for all these point-to-point connections you can use the interface name ppp+ which represents all pppX interfaces. As these point-to-point connections are very common ppp+ is part of the default config.
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