ZyWALL Series CLI Reference Guide
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CHAPTER 70
Packet Flow Explore
This chapter covers how to use the packet flow explore feature.
70.1 Packet Flow Explore
Use this to get a clear picture on how the Zyxel Device determines where to forward a packet and how
to change the source IP address of the packet according to your current settings. This function provides
you a summary of all your routing and SNAT settings and helps troubleshoot the related problems.
70.2 Packet Flow Explore Commands
The following table lists the commands that you can use to have the Zyxel Device display routing and
SNAT related settings.
Table 336 Packet Flow Explore Commands
COMMAND DESCRIPTION
show route order
Displays the order of routing related functions the Zyxel Device checks
for packets. Once a packet matches the criteria of a routing rule, the
Zyxel Device takes the corresponding action and does not perform
any further flow checking.
show system snat order
Displays the order of SNAT related functions the Zyxel Device checks
for packets. Once a packet matches the criteria of an SNAT rule, the
Zyxel Device uses the corresponding source IP address and does not
perform any further flow checking.
show system route policy-route
Displays activated policy routes.
show system route nat-1-1
Displays activated 1-to-1 NAT rules.
show system route site-to-
site-vpn
Displays activated site-to-site VPN rules.
show system route dynamic-vpn
Displays activated dynamic VPN rules.
show system route default-wan-
trunk
Displays the default WAN trunk settings.
show ip route static-dynamic
Displays activated static-dynamic routes.
show system snat policy-route
Displays activated policy routes which use SNAT.
show system snat nat-1-1
Displays activated NAT rules which use SNAT.
show system snat nat-loopback
Displays activated activated NAT rules which use SNAT with NAT
loopback enabled.
show system snat default-snat
Displays the default WAN trunk settings.
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