ZyXEL Communications ZyXEL ZyWALL 5 - Manual (Page 289)

ZyWALL 5 User’s Guide
288 Chapter 17 Network Address Translation (NAT)
17.3 Configuring NAT Overview
Click NAT to open the NAT Overview screen shown next.
Figure 138 NAT Overview
The following table describes the labels in this screen.
Table 93 NAT Overview
LABEL DESCRIPTION
NAT Setup
Max. Concurrent
Sessions
This read-only field displays the highest number of NAT sessions that the ZyWALL
will permit at one time.
Max. Concurrent
Sessions Per
Host
Use this field to set the highest number of NAT sessions that the ZyWALL will permit
a host to have at one time.
Enable NAT Select this check box to turn on the NAT feature for the WAN port. Clear this check
box to turn off the NAT feature for the WAN port.
Address
Mapping Rules
Select SUA to have the ZyWALL use its permanent, pre-defined NAT address
mapping rules.
Select Full Feature to have the ZyWALL use the address mapping rules that you
configure. This is the equivalent of what used to be called full feature NAT.
The bar displays how many of the ZyWALL's possible address mapping rules are
configured. The first number shows how many address mapping rules are configured
on the ZyWALL. The second number shows the maximum number of address
mapping rules that can be configured on the ZyWALL.
Port Forwarding
Rules
The bar displays how many of the ZyWALL's possible port forwarding rules are
configured. The first number shows how many port forwarding rules are configured
on the ZyWALL. The second number shows the maximum number of port forwarding
rules that can be configured on the ZyWALL.
Port Triggering
Rules
The bar displays how many of the ZyWALL's possible trigger port rules are
configured. The first number shows how many trigger port rules are configured on
the ZyWALL. The second number shows the maximum number of trigger port rules
that can be configured on the ZyWALL.