Figure 350 Filter Rule Process - ZyXEL Communications ZYWALL 2 PLUS User Manual

Chapter 37 Filter Configuration

Figure 350 Filter Rule Process

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.
521
ZyWALL 2 Plus User's Guide