Chapter 27 Security Policy
ZyWALL USG Series User’s Guide
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The following table describes the labels in this screen.
27.6.1 The Session Control Add/Edit Screen
Click Configuration > Security Policy > Session Control and the Add or Edit icon to display the Add or Edit
screen. Use this screen to configure rules that define a session limit for specific users or addresses.
Table 212 Configuration > Security Policy > Session Control
LABEL DESCRIPTION
General Settings
UDP Session Time
Out
Set how many seconds the Zyxel Device will allow a UDP session to remain idle (without UDP
traffic) before closing it.
Session Limit
Settings
Enable Session
limit
Select this check box to control the number of concurrent sessions hosts can have.
IPv4 / IPv6 Rule
Summary
This table lists the rules for limiting the number of concurrent sessions hosts can have.
Default
Session per
Host
This field is configurable only when you enable session limit.
Use this field to set a common limit to the number of concurrent NAT/Security Policy sessions
each client computer can have.
If only a few clients use peer to peer applications, you can raise this number to improve their
performance. With heavy peer to peer application use, lower this number to ensure no single
client uses too many of the available NAT sessions.
Create rules below to apply other limits for specific users or addresses.
Add Click this to create a new entry. Select an entry and click Add to create a new entry after the
selected entry.
Edit Double-click an entry or select it and click Edit to open a screen where you can modify the
entry’s settings.
Remove To remove an entry, select it and click Remove. The Zyxel Device confirms you want to remove
it before doing so.
Activate To turn on an entry, select it and click Activate.
Inactivate To turn off an entry, select it and click Inactivate.
Move To change a rule’s position in the numbered list, select the rule and click Move to display a field
to type a number for where you want to put that rule and press [ENTER] to move the rule to the
number that you typed.
The ordering of your rules is important as they are applied in order of their numbering.
Status This icon is lit when the entry is active and dimmed when the entry is inactive.
# This is the index number of a session limit rule. It is not associated with a specific rule.
User This is the user name or user group name to which this session limit rule applies.
IPv4 / IPv6 Address This is the IPv4 / IPv6 address object, including geographic address (group) objects to which
this session limit rule applies.
Description This is the information configured to help you identify the rule.
Limit This is how many concurrent sessions this user or address is allowed to have.
Apply Click Apply to save your changes back to the Zyxel Device.
Reset Click Reset to return the screen to its last-saved settings.
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