After you create and attach the network interfaces on Azure, you must configure the same IP addressing for the corresponding monitoring ports on the Network Security appliance. For example, you must configure the IP address and subnet mask configured on the pether3 interface in Azure on the Network Security pether3 port, and configure the IP address and subnet mask configured on the pether4 interface in Azure on the Network Security pether4 port.
Log in to the Network Security Web UI.
Select Settings > Network.
Locate the Monitor Port IP Configurations section.
In the Monitor Port drop-down list, select the first monitoring interface you created in Azure.
In the IPv4 address and Subnet Mask fields, enter the exact values that you configured for the interface in Azure (see Creating Network Security network interfaces).
Click Save.
Repeat these steps for each additional monitoring port you created in Azure.