About Filter & Filter Examples - ZyXEL Communications P-2302RL-P1 Support Notes

24.1. If the Internet IP address is a fixed IP address provided by ISP in SUA mode, then you can
always use this IP address for reaching the VPN server.
In the following example, the IP address '140.113.1.225' is dynamically assigned by ISP. You must
enter this IP address in the 'VPN Server' dialog box for reaching the PPTP server. After the VPN link is
established, you can start the network protocol application such as IP, IPX and NetBEUI.
About Filter & Filter Examples
How does ZyXEL filter work?

Filter Structure
The ZyXEL Device allows you to configure up to twelve filter sets with six rules in each set, for a total of 72
filter rules in the system. You can apply up to four filter sets to a particular port to block multiple types of
packets. With each filter set having up to six rules, you can have a maximum of 24 rules active for a single port.
The following diagram illustrates the logic flow when executing a filter rule.
All contents Copyright  2007 ZyXEL Communications Corporation.
P2302RL-P1 Support Notes
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