Packet Flow Explore; Chapter 48 Packet Flow Explore; Overview; What You Can Do In This Chapter - ZyXEL Communications ZyWall 110 User Manual

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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 any related problems.

• Use the Routing Status screen (see

each routing function's settings.

• Use the SNAT Status screen (see

conversion (SNAT) flow and each SNAT function's settings.

The Routing Status screen allows you to view the current routing flow and quickly link to specific routing

settings. Click a function box in the Routing Flow section, the related routes (activated) will display in the

Routing Table section. To access this screen, click Maintenance > Packet Flow Explore > Routing Status.

The order of the routing flow may vary depending on whether you:

• Select use policy route to override direct route in the CONFIGURATION > Network > Routing > Policy

Route screen.

• Use policy routes to control 1-1 NAT by using the policy control-virtual-server-rules

activate command.

• Select use policy routes to control dynamic IPSec rules in the CONFIGURATION > VPN > IPSec VPN >

VPN Connection screen.

Note: 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.

Packet Flow Explore

Section 48.2 on page

Section 48.3 on page

ZyWALL USG Series User's Guide

1017) to view the overall routing flow and

1022) to view the overall source IP address

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