ZyXEL Communications Unified Security Gateway ZyWALL 300, User Manual

Page: 572 / 1156

Chapter 32 Application Patrol
ZyWALL USG 300 User’s Guide
572
32.4 The Other Applications Screen
Sometimes, the ZyWALL cannot identify the application. For example, the
application might be a new application, or the packets might arrive out of
sequence. (The ZyWALL does not reorder packets when identifying the
application.)
The Other (applications) screen controls the default policy for TCP and UDP traffic
that the ZyWALL cannot identify. You can use source zone, destination zone,
destination port, schedule, user, source, and destination information as criteria to
create a sequence of specific conditions, similar to the sequence of rules used by
firewalls, to specify what the ZyWALL should do more precisely. You can also
control the bandwidth used by these other applications.This screen also allows you
to add, edit, and remove conditions to this default policy.
Priority This field displays when the inbound or outbound bandwidth
management is not set to 0. Enter a number between 1 and 7 to set the
priority for this application’s traffic that matches this policy. The smaller
the number, the higher the priority.
The ZyWALL gives traffic of an application with higher priority bandwidth
before traffic of an application with lower priority.
The ZyWALL uses a fairness-based (round-robin) scheduler to divide
bandwidth between applications with the same priority.
The number in this field is ignored if the incoming and outgoing limits
are both set to 0. In this case the traffic is automatically treated as being
set to the lowest priority (7) regardless of this field’s configuration.
Maximize
Bandwidth
Usage
This field displays when the inbound or outbound bandwidth
management is not set to 0. Enable maximize bandwidth usage to let
the traffic matching this policy “borrow” any unused bandwidth on the
out-going interface.
After each application gets its configured bandwidth rate, the ZyWALL
uses the fairness- based scheduler to divide any unused bandwidth on
the out-going interface amongst applications that need more bandwidth
and have maximize bandwidth usage enabled.
Log Select whether to have the ZyWALL generate a log (
log
), log and alert
( log alert ) or neither ( no ) when the application’s traffic matches this
policy. See Chapter 51 on page 867 for more on logs.
OK Click
OK
to save your changes back to the ZyWALL.
Cancel Click
Cancel
to exit this screen without saving your changes.
Table 150 Application Policy Edit (continued)
LABEL DESCRIPTION