Zyxel ZyWALL USG 20W — uSG Firewall: Default WAN Trunk & SNAT for Simplified Routing Configuration [17/185]

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ZyWALL USG Support Notes

For detailed explanation, please go to section 1.2 Default WAN Trunk and Default

SNAT.

1.2. Default WAN Trunk and Default SNAT

Default WAN Trunk and Default SNAT are the newly added features in ZLD v2.20.

They‟re designed for user convenience. With Default WAN Trunk and Default SNAT,

user doesn‟t need to configure policy routes to route intranet traffic to internet. This

new routing feature will apply to the traffic from intranet to internet.

USG ZyWALL determines whether the traffic is intranet or internet according to the

interface type, which is also a newly added feature in ZLD v2.20.

1.2.1. Interface Type

In ZLD v2.2, user can define interface type as the following three types:

 Internal

 External

 General

You can flexibly define each interface‟s type according to your network scenario.

Go to Configuration > Network > Interface > Ethernet.