Packet Flow Explore; Chapter 47 Packet Flow Explore; Overview; What You Can Do In This Chapter - ZyXEL Communications ZYWALL USG 20 Manual

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47.1 Overview

Use this to get a clear picture on how the ZyWALL 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.

47.1.1 What You Can Do in this Chapter

• Use the Routing Status screen (see
overall routing flow and each routing function's settings.
• Use the SNAT Status screen (see
source IP address conversion (SNAT) flow and each SNAT function's settings.

47.2 The Routing Status Screen

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.
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.
ZyWALL USG 20/20W User's Guide

Packet Flow Explore

Section 47.2 on page
Section 47.3 on page
47
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719) to view the overall
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