Monday , October 23 2017
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Tag Archives: Huawei USG5500

NAT server on Huawei USG5500

The last article dealt with outbound NAT. Let’s focus today on NAT server. NAT server enables private network servers to provide services for external networks with public IP addresses. In this lab, our enterprise provides FTP services for external users.

We can use the topology from the last post:

In our case AR router works as FTP server:

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outbound NAT on Huawei USG5500

What does it mean outbound NAT?

Outbound NAT translates the source IP addresses of packets sent from a high-priority security zone to a low-priority one.

I allowed myself to post a flowchart of configuring intranet users to access extranet through NAT (from Huawei documentation):

It easily lets us to choose a suitable way of configuring outbound NAT. In this lab I will try to do a review of these methods.

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