How to set an Outbound NAT - Draytek

Disclaimer: While this guide provides general steps, the exact interface and options might vary slightly depending on your router's firmware version.

Understanding Outbound NATs: 

Before we begin, it's important to understand what an outbound NAT is. An Outbound NAT, also called Source NAT or SNAT) is a type of Network Address Translation that modifies the source IP address of outgoing packets from a private network to a public IP address as they exit your network, usually through a router or firewall. 

Prerequisites

Before we go through how to open a port on a Draytek, you need the following: 

• The device needs a statically assigned internal IP
• The school needs a network range on the panel. This can be found on your Connectivity asset under ‘Customer Network’
• If you haven't set an IP alias, please follow our How to access router guide

Steps to set an Outbound NAT: 

From the left-hand side menu section, select Routing and then Load-Balance/Route Policy 

On the next page, you will see a table of rules. Select the next free one 

In this example, this is the first Open Port on this router, so we would select Index 1

Once selected, you will see:

Click on one of the index number to create the rule on

Comment: The name of the rule or the IPs used

Protocol: Select the protocol “Any”

Source IP: Add the IP range you wish to use for the Load Balance/Route Policy rule. 

Destination IP: Select “Any” for the Destination IP,

Destination Port: Select “Any”

Interface: Select the WAN interface and the public IP address you wish to use for the rules.