ZyXEL Communications unified security gateway manual 721

Chapter 47 Packet Flow Explore

The following table describes the labels in this screen.

Table 227 Maintenance > Packet Flow Explore > SNAT Status

LABEL	DESCRIPTION
SNAT Flow	This section shows you the flow of how the ZyWALL changes the source IP
	address for a packet according to the rules you have configured in the
	ZyWALL. Click a function box to display the related settings in the SNAT
	Table section.
SNAT Table	The table fields in this section vary depending on the function box you select
	in the SNAT Flow section.
The following fields are available if you click Policy Route SNAT in the SNAT Flow
section.
#	This field is a sequential value, and it is not associated with any entry.
PR #	This is the number of an activated policy route which uses SNAT.
Outgoing	This is the outgoing interface that the route uses to transmit packets.
SNAT	This is the source IP address(es) that the SNAT rule uses finally.
The following fields are available if you click 1-1 SNAT in the SNAT Flow section.
#	This field is a sequential value, and it is not associated with any entry.
NAT Rule	This is the name of an activated NAT rule which uses SNAT.
Source	This is the original source IP address(es).
Destination	This is the original destination IP address(es).
Outgoing	This is the outgoing interface that the SNAT rule uses to transmit packets.
SNAT	This is the source IP address(es) that the SNAT rule uses finally.

The following fields are available if you click Loopback SNAT in the SNAT Flow section.

#	This field is a sequential value, and it is not associated with any entry.
NAT Rule	This is the name of an activated NAT rule which uses SNAT and enables NAT
	loopback.
Source	This is the original source IP address(es). any means any IP address.
Destination	This is the original destination IP address(es). any means any IP address.
SNAT	This indicates which source IP address the SNAT rule uses finally. For
	example, Outgoing Interface IP means that the ZyWALL uses the IP
	address of the outgoing interface as the source IP address for the matched
	packets it sends out through this rule.

The following fields are available if you click Default SNAT in the SNAT Flow section.

#	This field is a sequential value, and it is not associated with any entry.
Incoming	This indicates internal interface(s) on which the packets are received.
Outgoing	This indicates external interface(s) from which the packets are transmitted.
SNAT	This indicates which source IP address the SNAT rule uses finally. For
	example, Outgoing Interface IP means that the ZyWALL uses the IP
	address of the outgoing interface as the source IP address for the matched
	packets it sends out through this rule.

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ZyWALL USG 20/20W User’s Guide