ZyXEL Communications unified security gateway User Manual
Chapter 47 Packet Flow Explore
ZyWALL USG 20/20W User’s Guide
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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
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
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.